Physique
mathématique des interactions fondamentales - Group seminars
This is the old group seminars webpage. The new group seminars webpage may be found here.
Besides the joint ULB-VUB-KUL-UMons seminars, the group organizes local seminars.
Thursday, December 16 2010, 11h00
Evangelos Melas
(Technological Educational Institute of Lamia)
"Revision of the work on the representation theory of the BMS group and its variants"
The Bondi-Metzner-Sachs (BMS) group Β is the common asymptotic symmetry group of all curved real lorentzian space-times which are asymptotically flat in future null directions. All possible analogues of Β, both real and in any signature, or complex, with all possible notions of asymptotic flatness 'near infinity' have been constructed by McCarthy. There are forty-two such groups. It has been argued that the irreducible unitary representations of these groups in Hilbert spaces are related to elementary particles and quantum gravity (via gravitational instantons). The results obtained so far in the representation theory of the aforementioned groups are summarised, some salient features of the representation theory are stated, and, prospects for future work are outlined.
Campus Plaine, Room NO.6. 10 (Sixth floor, building NO)
Tuesday, December 14 2010, 11h00
Roberto Volpato
(ETH Zurich)
"Mathieu moonshine and non-linear sigma models on K3"
It has been recently conjectured that the elliptic genus of K3 admits a natural decomposition into representations of the Mathieu group M24. After showing some strong arguments in favour of this conjecture, I discuss some possible interpretations in terms of N=(4,4) superconformal field theories. This discussion is based on a general description of the groups of discrete symmetries for non-linear sigma models with target space K3 and on the explicit analysis of some particular theories.
Campus Plaine, Room NO.6. 10 (Sixth floor, building NO)
Monday, December 6 2010, 11h00
Euihun Joung
(Scuola Normale Superiore, Pisa)
"Higher-spin symmetries, effective action and holography"
The conformal symmetries of a free scalar field can be extended to infinite dimensional higher-spin(HS) symmetries. We consider the gauge-ization of the symmetries by HS gauge fields, and compute the corresponding HS effective action. The latter exhibits an anomaly in the conformal sector of the HS symmetries. We also discuss holographic aspects of the model as the boundary dual of an interacting HS gauge theory in the bulk.
Campus Plaine, Room NO.6. 10 (Sixth floor, building NO)
Monday, November 22 2010, 10h00-12h00 (Lecture 1) and 14h00-16h00 (Lecture 2)
Gaston Giribet
(Physics Department, University of Buenos Aires FCEN-UBA and IFIBA-CONICET)
"Mini-course on AGT conjecture"
Lecture 1:
Introduction to Liouville field theory. Basic aspects on N=2 Yang-Mills theory. Gaiotto's construction: A family of N=2 theories from M-theory compactification and moduli spaces. Known examples and linear quiver theories.
Lecture 2:
The Alday-Gaiotto-Tachikawa conjecture for SU(2) N=2 gauge theories. The theory with Nf=4 flavors as a working example. Generalizations: The SU(Nc) N=2 theories, loop and surface operators, the SL(2) affine structure and N=2 theories from the Wess-Zumino-Witten model.
Campus Plaine, Room NO.6. 10 (Sixth floor, building NO)
Tuesday, October 19 2010, 14h00
Chethan Krishnan
(SISSA and INFN)
"Black Holes, Rotation and CFTs"
I discuss some aspects of rotating black holes and their CFT duals.
Campus Plaine, Salle Solvay (Fifth floor, building NO)
Thursday, October 14 2010, 11h00
Carlo Maccaferri
(ULB)
"A simple solution for relevant deformations in open string field theory"
In the context of the conjectured correspondence between exact open string backgrounds and classical solutions of OSFT, I derive a remarkably simple solution of cubic open string field theory which describes the the new boundary conformal field theory which is obtained in the infrared by deforming the starting BCFT with a relevant boundary operator. The gauge invariant observables of the solution turns out to precisely coincide with the shift from the UV to the IR of the corresponding world sheet quantities (disk partition function and closed string one point functions), consistently with the fact that the IR BCFT is captured by just expanding OSFT around the new solution. The result is particularly important in relation to the conjectured background independence of OSFT and the proof of the remaining Sen's conjecture.
Campus Plaine, Room NO.6. 10 (Sixth floor, building NO)
Tuesday, June 8 2010, 10h30
George Papadopoulos
(King's College London)
"Heterotic Black Horizons"
I shall briefly review the classification of black holes in 4 and 5 dimensions. Then I use the recent classification of supersymmetric solutions to identify the geometry of black hole horizons in heterotic supergravity. There are intriguing connections with del Pezzo surfaces, exceptional groups and differential systems of Monge Ampere type. I will present evidence for the existence of exotic black holes in higher dimensions.
Campus Plaine, Salle Solvay (Fifth floor, building NO)
Monday, March 22 2010, 14h00
Carlo Iazeolla
(Scuola Normale Superiore, Pisa)
"Type-D Solutions to 4D higher-spin gauge theory"
I shall present a new class of exact, generalized type-D solutions to 4D Vasiliev's equations, invariant under higher-spin extensions of G = O(3) x O(2), G = O(2,1) x O(2) and O(2) x O(2), and discuss some issues concerning their physical interpretation.
Campus Plaine, 2.NO.610
Tuesday, November 17 2009, 14h00
Jorge Rocha
(Instituto Superior Técnico, Lisbon)
"Phase diagram for non-axisymmetric plasma balls"
The fluid-gravity correspondence provides a precise mapping between gravitational dynamics and hydrodynamics. Such a duality has proven useful to better understand the rich phase structure of black holes in higher dimensions, as well as their stability, from the simpler fluid dynamics description. In particular, plasma balls and rings emerge as fluid holographic duals of black holes and black rings in Scherk-Schwarz AdS gravity. Recently, plasma balls spinning above a critical rotation were found to be unstable against m-lobed perturbations. In the phase diagram of stationary solutions the threshold of the instability signals a bifurcation to a new phase of non-axisymmetric configurations. In this talk I will exhibit explicitly this family of solutions and represent them in the phase diagram. To finish, I will discuss the implications of our results for the gravitational system and argue that this m-lobed instability might become active in Myers-Perry black holes for rotations below the recently found ultraspinning instability.
This is joint work with Vitor Cardoso and Óscar Dias.
Campus Plaine, building NO, 5th floor, Salle Solvay
Thursday, November 12 2009, 14h00
Paul P. Cook
(King's College London)
"Bound States of M-theory"
E11 is a conjectured symmetry algebra of M-theory. In this talk we will give a back-of-the-envelope derivation of this Kac-Moody algebra in terms of Young tableaux. Amongst the fields resulting from the algebra we will find the gauge fields associated to the pp-wave, the M-branes and the KK-monopole and an infinity of exotic fields of mixed symmetry. The exotic fields will be interpreted as bound states of the fundamental M-theory solutions and give a picture of the full algebra, in the limit, as composite states of the membrane, or membrane molecules.
Campus Plaine, building NO, 5th floor, Salle Solvay
Tuesday, November 10 2009, 14h00
Max Bañados
(Pontificia Universidad Catolica de Chile)
"Massive gravity in 3d and 4d. Bigravity formulations and some applications"
Recently there has been great activity on massive gravity in three dimensions. Here we show that bigravity provides yet another formulation for a single massive graviton in three dimensions. We also comment on some applications of this action to 4d cosmology.
Campus Plaine, building NO, 5th floor, Salle Solvay
Monday, October 26 2009, 14h00
Subir Sachdev
(Harvard)
" Strong coupling problems in condensed matter and the AdS/CFT correspondence"
I will survey some open problems posed by experiments on condensed matter systems, such as the high temperature superconductors. I will argue that their solutions require analyses of strong-coupling regimes which cannot be addressed by conventional field-theoretic means. I will describe insights drawn from the AdS/CFT correspondence, and discuss the connections to theories with simple gravity duals.
Campus Plaine, building NO, 5th floor, Salle Solvay
Friday, October 15 2009, 14h00
Hermann Nicolai
(Albert Einstein Institute)
" N=8 supergravity: back to the future"
In this talk I will review some basic properties of N=8 supergravity, and also discuss the issue of its possible finiteness.
Campus Plaine, building NO, 5th floor, Salle Solvay
Friday, October 9 2009, 14h00
Ayan Mukhopadhyay
(Harish-Chandra Research Institute)
"Universal Phenomena in Strongly Coupled Gauge Theories and Gravity"
The AdS/CFT correspondence defines a sector with universal
strongly coupled dynamics in the field theory as the dual of pure gravity
in AdS described by Einstein's equation with a negative cosmological
constant. We will explain, from the field-theoretic viewpoint how the
dynamics in this sector gets determined by the expectation value of the
energy-momentum tensor alone. We will first show that the Boltzmann
equation has very special solutions which could be functionally
completely determined in terms of the energy-momentum tensor alone. We
will call these solutions ``conservative'' solutions. We will indicate why
conservative solutions should also exist when we refine this kinetic
description to go closer to the exact microscopic theory or even move away
from the regime of weak coupling so that no kinetic description could be
employed. We will argue that these "conservative solutions" form the
universal sector dual to pure gravity at strong coupling and large N.
Based on this observation, we will propose a ``regularity conditon'' on
the energy-momentum tensor so that the dual solution in pure gravity has a
smooth future horizon. We will also study if irreversibility emerges only
at long time scales of observation, unlike the case of the Boltzmann
equation. Reference: http://arxiv.org/abs/0907.1156
Campus Plaine, building NO, 5th floor, Salle Solvay
Monday, June 29 2009, 14h00
Anindya Dey
(University of Texas, Austin)
" Modular Differential Equations and Null Vectors in RCFTs"
Following the work of Gaberdiel et al (0804.0489) we develop
the correspondence between modular differential equations of characters of a CFT and
null vectors in the vacuum representation of the theory. We sketch out some of the consequences of this correspondence
in rational CFTs and discuss how this correspondence can be useful in understanding the
structure of the extremal, self-dual CFTs dual to AdS_3.
Campus Plaine, 2.NO.610
Tuesday, June 2 2009, 14h00
Ilya L. Shapiro
(Universidade Federal de Juiz de Fora, MG, Brazil)
" Local Conformal Symmetry and its Violation at Quantum Level"
We present a short review of the local conformal symmetry and its anomalous violation in curved $4d$ space-time.
Furthermore we discuss the ambiguities of conformal anomaly and the anomaly-induced effective actions.
Despite the conformal symmetry is always broken at quantum level, it is useful for constructing the best known approximations
for investigating quantum corrections to the classical action of gravity. These quantum corrections represent
an appropriate basis for a number of applications in cosmology and black hole physics.
Campus Plaine, 2.NO.610
Tuesday, May 5 2009, 14h00
Gaston Giribet
(University of Buenos Aires & CONICET)
" Three dimensional massive gravity"
In the last year and a half there has been a revived interest in three-dimensional theories of gravity. The proposal by E. Witten that 2+1 D Einstein gravity in AdS_3 space is dual to a holomorphically factorizable theory of the class known as extremal CFT_2 has attracted considerable attention, and led to intense debate. Another model of 2+1 D gravity, Topologically Massive Gravity (TMG). This theory contains local massive graviton degrees of freedom, and admits black hole solutions, making TMG a very interesting model to be explored. Based on this model, it has been recently conjectured that a chiral theory of gravity in three dimensions exist. In this (blackboard) talk I will summarize recent discussion about the consistency of this "chiral gravity conjecture".
Campus Plaine, 2.NO.610
Thursday, April 23 2009, 14h00
Vasily Pestun
( Harvard )
" Localization in the N=2 and N=4 super Yang-Mills gauge theory and Wilson loops"
Using cohomological description of the N=2 (N=4) super Yang-Mills theory with respect to certain
superconformal charges we will localize the path integral of the theory to finite dimensional matrix model.
Expectation value of certain operators, including maximally supersymmetric circular Wilson loop operators, can be computed exactly
in this setup. In particular we prove Erickson-Semenoff-Zarembo/Drukker-Gross conjecture which relates these
loops in the N=4 SYM with Hermitian matrix model and generalize this result to the N=2 SYM.
Campus Plaine, 2.NO.610
Tuesday, April 14 2009, 15h00
Andrea Quadri
( Milano )
" Canonical Transformations and the Algebra of Physical Observables
in Nonlinearly Realized Gauge Theories"
We study the divergences of the nonlinearly realized massive SU(2) Yang-Mills theory within the framework of the Batalin-Vilkovisky (BV) formulation of gauge theories. Perturbation theory is developed in the number of loops. The 1-PI amplitudes which do not involve any Goldstone leg (ancestor amplitudes) obey the Weak Power-Counting (WPC), i.e. only a finite number of them is divergent at each order in the loop expansion.
On the contrary, at every loop order there is an infinite number of divergent amplitudes involving the Goldstone fields. We show that these divergences can be recursively removed via a canonical transformation. The role of locality in the computation of the relevant cohomology groups of the linearized BV bracket (both classical and quantum) is discussed. A recursive order-by-order choice of finite renormalizations, allowed by the symmetries and the WPC, corresponds to a recursive order-by-order (non local) redefinition of the algebra of physical observables (identified by the local cohomology of the classical linearized BV bracket in ghost number zero).
Campus Plaine, 2.NO.610
Friday, March 6 2009, 14h00
A. Belavin
( Landau Institute for Theoretical Physics )
" 2-Dimensional Minimal Gravity in Matrix Model and Liouville
approaches"
Since the middle of 80's there exist two independent
approaches to 2D Quantum Gravity, the continuous approach called
Liouville Gravity and the discrete one usually refered to as the Matrix
Models. We obtain the explicit expressions for multipoints correlators
of the p-critical One Matrix Models in the so called CFT frame and
argue that they coincide with the ones obtained in (2,2p+1) Minimal
Liouville Gravity (or Minimal String Theory).
Campus Plaine, 2.NO.610
Monday, February 16 2009, 15h00
Stéphane Detournay
( UCSB, Santa Barbara )
"3D gravity theories, exact string backgrounds and applications"
In this talk I will discuss some properties of the backgrounds recently proposed as vacua for topologically massive gravity away from the chiral point, the so-called warped AdS3 space-times. After some general considerations on the chiral gravity conjecture, I will first use asymptotic symmetry-based arguments to infer properties of the dual CFT. Then I will show how these backgrounds can be embedded as (tachyonic) exact string backgrounds. I will finally comment on potential further applications, namely in the context of the non-relativistic AdS/CFT correspondence.
Campus Plaine, 2.NO.610
Friday, February 6 2009, 16h00
Carlos Martins
(U Porto)
"Astrophysical probes of fundamental physics: from alpha to omega"
The deepest question of modern physics is whether or not there are fundamental scalar fields in nature. They are a key ingredient in the standard model of particle physics (cf. the Higgs particle), but after several decades of searches there is still no evidence for them. More recently it has been realized that they can
also play a key role in cosmology, and indeed the early universe is an ideal place to search for them. In this talk I will discuss an example of this point.
I will review the motivation for varying fundamental couplings and discuss how these measurements can be used to constrain fundamental physics scenarios that would otherwise be inaccessible to experiment. I will then focus on the relation between varying couplings and dark energy, and explain how varying coupling measurements might be used to probe the nature of dark energy, with important advantages over standard methods. Assuming that the current (controversial) evidence for varying couplings is correct, a several-sigma detection of dynamical dark energy is feasible within a few years, even using current ground-based facilities. With future instruments like CODEX, a high-accuracy reconstruction of the dark energy equation of state may be possible all the way up to redshift 4.
Campus Plaine, building NO, 5th floor, Salle Solvay
Friday, February 6 2009, 11h00
Jarah Evslin
( SISSA, Trieste)
"Contrasting confinement in superconductors and superQCD"
I will provide a pedagogical introduction to confinement in
softly broken N=2 supersymmetric gauge theories and also in BCS
superconductors. I will provide an identification between the two
theories and demonstrate that, while confinement in both theories is
caused by vortices, the identification breaks down in the presence of
these vortices and so the mechanisms of confinement are different.
Campus Plaine, 2.NO.610
Friday, December 12 2008, 11h00
Raphael Benichou
( ENS, Paris )
"A bound state in a conformal field theory with continuous
spectrum, and D-branes in throats."
I will show the existence of bound states in the spectrum of
non-compact D-branes in N = 2 Liouville conformal field theory. I will
then interpret these states in the context of D-branes in the
near-horizon limit of Neveu-Schwarz five-branes configurations.
Campus Plaine, 2.NO.610
Monday, December 8 2008, 10h30
Matthias WaplerCampus Plaine, building NO, 5th floor, Salle Solvay
( Perimeter Institute For Theoretical Physics )
"Applied String Theory: Transport properties of holographic defects"
I will describe recent efforts in applying the AdS/CFT correspondence to
Condensed Matter Physics. In particular, I focus on the charge transport
properties of fields confined to a (2+1)-dimensional defect coupled to a
(3+1) dimensional super-Yang-Mills theory at large-$N_c$ and strong
coupling using linear response theory.
Considering a wide range of parameters describing the defect and the gauge
theory, we compare our results to general expectations from condensed
matter physics. I will also comment about the quasiparticle spectrum in
relation to the structure of the defect and about taking $N_c$ finite.
Thursday, November 6 2008, 14h00
Michele CiraficiCampus Plaine, building NO, 5th floor, Salle Solvay
( Utrecht University )
"Instantons and hypermultiplet moduli spaces"
The low energy effective action of a type II string
compactification on a Calabi-Yau manifold factorizes into two sectors:
vector multiplets and hypermultiplets. Both sectors receive quantum
corrections which are nonperturbative in nature. The vector multiplet
sector has been studied for some time via topological string methods and
it is reasonably under control. On the other hand nonperturbative
corrections to the hypermultiplet sector are still poorly understood. In
the recent years a proposal has been made to overcome these problems from
the supergravity perspective, by constraining the hypermultiplet low
energy effective action via global symmetries and the c-map. In this talk
we report on partial progress towards a microscopical derivation/test of
this proposal, via direct instanton computations.
Friday, September 26 2008, 11h00
Christian HillmannCampus Plaine, 2.NO.610
( ULB )
"E(7) and d=11 supergravity"
Guided by the hidden E(7) symmetry of a compactification of d=11 Supergravity to four dimensions, I constructed a D=60 dimensional exceptional geometry that is manifestly E(7) invariant. To simplify the setting, I focussed on a 56 dimensional subsector. Requiring the mere existence of a supersymmetry transformation in this geometry that is diffeomorphism invariant in its truncation to the common dimensions with d=11 supergravity, uniquely fixes the supersymmetry variations including all numerical factors to the ones of d=11 supergravity. In particular, I neither had to evaluate the supersymmetry algebra nor to check the invariance of the equations of motion to fix these transformations in a unique way.
Friday, July 20 2008, 11h00
Cobi SonnenscheinCampus Plaine, 2.N6.110
( Tel Aviv University )
"Holographic chiral symmetry-progress report"
Wednesday, June 13 2007, 10h30
Andrea QuadriCampus Plaine, 2.NO.610
( Università degli Studi di Milano )
"All-order symmetric subtraction of divergences
for massive Yang-Mills theory based on
nonlinearly realized gauge group"
We propose a consistent framework for the all-order
symmetric subtraction of the divergences for massive Yang-Mills theory
realized via a nonlinear representation of the gauge group.
The method is based on some novel tools in perturbative quantum
field theory (hierarchy among Green functions and weak power-counting
theorem) which hold for nonlinear representations of the gauge group in
the broken phase.
Thursday, September 14 2006, 14h00
Alexey SharapovCampus Plaine, 2.NO.610
(Tomsk State University)
"Constructing partition functions for non-Lagrangian dynamics: general
methods and examples"
A non-abelean generalization is proposed for the Schwinger-Dyson equations
(SDE) to define partition functions for the non-Lagrangian systems. This
quantization method extends the BV quantization of Lagrangian field theories
to non-Lagrangian ones in the same sense as Kontsevich's deformation
quantization is a generalization of canonical quantization of Hamiltonian
dynamics. New geometric and algebraic structures are discussed that are
behind the generalized SDE. Two different path integral representations are
proposed for the partition functions in non-Lagrangian theory. The first
representation employs a regular procedure for reformulating the original non-
Lagrangian field theory in $d$ dimensions as an equivalent Lagrangian
topological field theory in $d+1$. The second representation involves a
systematic augmentation procedure that absorbs the originally non-Lagrangian
dynamics by a wider Lagrangian one in the space-time of the same dimension.
In general, the augmented theory is not equivalent to the original dynamics,
and it can have more degrees of freedom than the original theory. However,
the extra dynamics are factorized out both at classical and at quantum
level. The general techniques are exemplified by quantizing non-Lagrangian
models.
Wednesday, June 14 2006, 13h30
Gaston GiribetCampus Plaine, 2.NO.610
(University of Buenos Aires)
"On a Relation Between Logarithmic Operators and
Degenerate Representations of the Virasoro Algebra"
Wednesday, June 14 2006, 10h30
Nazim BouattaCampus Plaine, 2.NO.610
(ULB)
"Exploring the Star Algebra of Open String Field Theory"
Tuesday, May 9 2006, 10h30
Iosif BenaCampus Plaine, 2.NO.610
(IAS Princeton)
"Geometric Transitions, Black Rings, and the Black Hole Information Paradox"
I will discuss how to construct black rings both using D-branes and in
supergravity. I will then discuss the geometric transitions of black rings,
which result in smooth horizon-less geometries that can be thought of as
microstates of the three-charge black hole. I will then present arguments
that the microstates of this black hole might be smooth horizon-less
geometries, and describe the implications of this fact for the physics of
black holes.
Tuesday, February 14 2006, 10h00 and 14h00
Giulio BonelliCampus Plaine, 2.NO.610
(SISSA, Trieste)
"Observations on cohomological sigma models"
We will review the basics of the A-model in topological sigma
model and in topological string theory with emphasis on its cohomological
formulation.
Tuesday, January 24 2006, 14h00
Emmanuel SériéCampus Plaine, 2.N6.110
(Paris XI)
"Algèbres d'endomorphismes et théories de jauge"
Il est naturel de considérer l'algèbre des endomorphismes d'un fibré vectoriel comme un équivalent algébrique de la notion de fibré principal avec groupe de structure SU(n) ou SL(n). J'illustrerai ce fait en donnant une construction de l'homomorphisme de Chern-Weil se servant explicitement d'une algèbre d'endomorphismes. Du point de vue de la géométrie non commutative, ces algèbres remplacent l'algèbre des fonctions sur une variété et permettent de généraliser les théories de jauges usuelles. Je présenterai une généralisation du modèle de Yang-Mills dans ce cadre et nous verrons que celui-ci peut s'interpréter comme un modèle de Yang-Mills-Higgs avec connexion de référence et un mécanisme de brisure de symétrie influencé par la géométrie du fibré.
Tuesday, November 14 2005, 14h00
Simon Lyakhovich
(Tomsk State U.)
"Path integral quantization of non-Lagrangian dynamics."
A path-integral quantization method is proposed for dynamical systems whose classical equations of motion do not necessarily follow from the action principle. The key new notion behind this quantization scheme is the Lagrange structure which is more general than the standard Lagrangian formalism in the same sense as Poisson geometry is more general than the symplectic one. The Lagrange structure is shown to admit a natural BRST description which is used to construct an AKSZ-type topological sigma-model. The dynamics of this sigma-model in $d+1$ dimensions, being localized on the boundary, are proved to be equivalent to the original theory in $d$ dimensions. As the topological sigma-model has a well defined action, it is path-integral quantized in the usual way that results in quantization of the original (not necessarily Lagrangian) theory. When the original equations of motion come from the action principle, the standard BV path-integral is explicitly deduced from the proposed quantization scheme. Making use of the Lagrange structure, a generalization is proposed for the Schwinger-Dyson equation to define the generating functional of Green functions for the non-Lagrangian systems.
The general quantization scheme is exemplified by several models including the ones whose classical dynamics are not variational.
Campus Plaine, 2.NO.610
Tuesday, November 23 2004, 15h00
Campus Plaine, 2 NO 6.10
Tuesday, February 17 2004, 11h00
Saurya Das
(University of Lethbridge, Canada)
"Corrections to black hole entropy and holography"
We consider asymptotically anti-de Sitter black holes in d-spacetime
dimensions in the thermodynamically stable regime. We show that the
Bekenstein-Hawking entropy and its leading order corrections due to
thermal fluctuations can be reproduced by a weakly interacting fluid of
bosons and fermions (`holographic gas') in $a(d-2) + 1$ dimensions, where
the energy momentum dispersion relations of the constituents of the fluid
is assumed to be $e= k p^a$ . We examine implications of this result to
the AdS/CFT correspondence and also to entropy bounds and the
holographic hypothesis.
References:
1. S. Das, V. Husain, Class.Quant.Grav. 20 (2003) 4387-4401 (hep-th/0303089)
2. S. Das, P. Majumdar, R. K. Bhaduri, Class.Quant.Grav. 19 (2002) 2355-2368 (hep-th/0111001)
Campus Plaine, 2 NO 6.10
Tuesday, December 2 2003, 14h00
Max Bañados
(Pontificia Universidad Catolica de Chile)
"Symmetry breaking in Chern-Simons supergravity"
Campus Plaine, 2 NO 6.10