652 citations · 7.8k across the 90 of their papers we have counts for
69 papers · 1 filter
BV-BRST Noether theorem
Glenn Barnich, Laurent Baulieu, Marc Henneaux +1
The BRST Noether theorem, or ``Noether's 1.5 theorem'', asserts the triviality of the BRST Noether current. We provide two proofs of this theorem that are both valid without restri…
Model spaces as constrained Hamiltonian systems: I. Application to
Glenn Barnich, Thomas Smoes
Motivated by group-theoretical questions that arise in the context of asymptotic symmetries in gravity, we study model spaces and their quantization from the viewpoint of constrain…
Modular properties of massive scalar partition functions
Ankit Aggarwal, Glenn Barnich
We compute the exact thermal partition functions of a massive scalar field on flat spacetime backgrounds of the form and show that they poss…
Chiral shift symmetries as an infinite tower of subleading super-shift symmetries
Glenn Barnich, Luca Ciambelli, Hernán A. González
Chiral shift symmetries of the massless free bosons in two dimensions are global symmetries that are somewhat similar to asymptotic symmetries. They are most transparent in double-…
Lessons from discrete light-cone quantization for physics at null infinity: Bosons in two dimensions
Glenn Barnich, Sucheta Majumdar, Simone Speziale +1
Motivated by issues in the context of asymptotically flat spacetimes at null infinity, we discuss in the simplest example of a massless scalar field in two dimensions several subtl…
Geometric action for extended Bondi-Metzner-Sachs group in four dimensions
Glenn Barnich, Kevin Nguyen, Romain Ruzziconi
The constrained Hamiltonian analysis of geometric actions is worked out before applying the construction to the extended Bondi-Metzner-Sachs group in four dimensions. For any Hamil…
Phase transition of photons and gravitons in a Casimir box
Ankit Aggarwal, Glenn Barnich
A first order phase transition for photons and gravitons in a Casimir box is studied analytically from first principles with a detailed understanding of symmetry breaking due to th…
Notes on massless scalar field partition functions, modular invariance and Eisenstein series
Francesco Alessio, Glenn Barnich, Martin Bonte
The partition function of a massless scalar field on a Euclidean spacetime manifold and with momentum operator in the compact spatial dimension…
Gravitons in a Casimir box
Francesco Alessio, Glenn Barnich, Martin Bonte
The partition function of gravitons with Casimir-type boundary conditions is worked out. The simplest box that allows one to achieve full analytical control consists of a slab geom…
Weyl Charges in Asymptotically Locally AdS Spacetimes
Francesco Alessio, Glenn Barnich, Luca Ciambelli +2
We discuss an enhancement of the Brown-Henneaux boundary conditions in three-dimensional AdS General Relativity to encompass Weyl transformations of the boundary metric. The result…
Modular invariance in finite temperature Casimir effect
Francesco Alessio, Glenn Barnich
The temperature inversion symmetry of the partition function of the electromagnetic field in the set-up of the Casimir effect is extended to full modular transformations by turning…
Soft degrees of freedom, Gibbons-Hawking contribution and entropy from Casimir effect
Glenn Barnich, Martin Bonte
Recent work on non proper-gauge degrees of freedom in the context of the Casimir effect is reviewed. In his original paper, Casimir starts by pointing out that, when the electromag…
Introduction to Classical Gauge Field Theory and to Batalin-Vilkovisky Quantization
Glenn Barnich, Fabrizio Del Monte
Lectures held at the 22nd "Saalburg" Summer School (2016)
Black hole entropy from non-proper gauge degrees of freedom: II. The charged vacuum capacitor
Glenn Barnich
The question which degrees of freedom are responsible for the classical part of the Gibbons-Hawking entropy is addressed. A physical toy model sharing the same properties from the…
A note on local BRST cohomology of Yang-Mills type theories with free abelian factors
Glenn Barnich, Nicolas Boulanger
We extend previous work on antifield dependent local BRST cohomology for matter coupled gauge theories of Yang-Mills type to the case of gauge groups that involve free abelian fact…
Deformations of vector-scalar models
Glenn Barnich, Nicolas Boulanger, Marc Henneaux +3
Abelian vector fields non-minimally coupled to uncharged scalar fields arise in many contexts. We investigate here through algebraic methods their consistent deformations ("gauging…
Geometric actions for three-dimensional gravity
Glenn Barnich, Hernan A. Gonzalez, Patricio Salgado-Rebolledo
The solution space of three-dimensional asymptotically anti-de Sitter or flat Einstein gravity is given by the coadjoint representation of two copies of the Virasoro group in the f…
Centrally extended BMS4 Lie algebroid
Glenn Barnich
We explicitly show how the field dependent 2-cocycle that arises in the current algebra of 4 dimensional asymptotically flat spacetimes can be used as a central extension to turn t…
Asymptotically locally flat spacetimes and dynamical black flowers in three dimensions
Glenn Barnich, Cédric Troessaert, David Tempo +1
The theory of massive gravity proposed by Bergshoeff, Hohm and Townsend is considered in the special case of the pure irreducibly fourth order quadratic Lagrangian. It is shown tha…
Super-BMS invariant boundary theory from three-dimensional flat supergravity
Glenn Barnich, Laura Donnay, Javier Matulich +1
The two-dimensional super-BMS invariant theory dual to three-dimensional asymptotically flat supergravity is constructed. It is described by a constrained or…
Chern-Simons action for inhomogeneous Virasoro group as an extension of three dimensional flat gravity
Glenn Barnich, Gaston Giribet, Mauricio Leston
We initiate the study of a Chern-Simons action associated to the semi-direct sum of the Virasoro algebra with its coadjoint representation. This model extends the standard Chern-Si…
Notes on conformal invariance of gauge fields
Glenn Barnich, Xavier Bekaert, Maxim Grigoriev
In Lagrangian gauge systems, the vector space of global reducibility parameters forms a module under the Lie algebra of symmetries of the action. Since the classification of global…
Notes on the BMS group in three dimensions: II. Coadjoint representation
Glenn Barnich, Blagoje Oblak
The coadjoint representation of the BMS group, which governs the covariant phase space of three-dimensional asymptotically flat gravity, is investigated. In particular, we clas…
One-loop partition function of three-dimensional flat gravity
Glenn Barnich, Hernan A. Gonzalez, Alexander Maloney +1
In this note we point out that the one-loop partition function of three-dimensional flat gravity, computed along the lines originally developed for the anti-de Sitter case, reprodu…