72 citations · 423 across the 28 of their papers we have counts for
24 papers · 1 filter
Improvement of a conserved current density versus adding a total derivative to a Lagrangian density
Francois Gieres
For classical relativistic field theory in Minkowski space-time, the addition of a superpotential term to a conserved current density is trivial in the sense that it does not modif…
Covariant canonical formulations of classical field theories
Francois Gieres
We review in simple terms the covariant approaches to the canonical formulation of classical relativistic field theories (in particular gauge field theories and general relativity)…
On the canonical formulation of gauge field theories and Poincare transformations
Daniel N. Blaschke, Francois Gieres
We address the Hamiltonian formulation of classical gauge field theories while putting forward results some of which are not entirely new, though they do not appear to be well know…
Field Theory with Coordinate Dependent Noncommutativity
Daniel N. Blaschke, Francois Gieres, Stefan Hohenegger +2
We discuss the formulation of classical field theoretical models on -dimensional noncommutative space-time defined by a generic associative star product. A simple procedure for…
The Energy-Momentum Tensor(s) in Classical Gauge Theories
Daniel N. Blaschke, Francois Gieres, Meril Reboud +1
We give an introduction to, and review of, the energy-momentum tensors in classical gauge field theories in Minkowski space, and to some extent also in curved space-time. For the c…
On the energy-momentum tensor in Moyal space
Herbert Balasin, Daniel N. Blaschke, Francois Gieres +1
We study the properties of the energy-momentum tensor of gauge fields coupled to matter in non-commutative (Moyal) space. In general, the non-commutativity affects the usual conser…
Wong's Equations and Charged Relativistic Particles in Non-Commutative Space
Herbert Balasin, Daniel N. Blaschke, Francois Gieres +1
In analogy to Wong's equations describing the motion of a charged relativistic point particle in the presence of an external Yang-Mills field, we discuss the motion of such a parti…
BPHZ renormalization and its application to non-commutative field theory
Daniel N. Blaschke, Francois Gieres, Franz Heindl +2
In a recent work a modified BPHZ scheme has been introduced and applied to one-loop Feynman graphs in non-commutative phi^4-theory. In the present paper, we first review the BPHZ m…
On the Renormalization of Non-Commutative Field Theories
Daniel N. Blaschke, Thomas Garschall, Francois Gieres +3
This paper addresses three topics concerning the quantization of non-commutative field theories (as defined in terms of the Moyal star product involving a constant tensor describin…
Quantum Corrections for Translation-Invariant Renormalizable Non-Commutative Phi^4 Theory
Daniel N. Blaschke, Francois Gieres, Erwin Kronberger +3
In this paper we elaborate on the translation-invariant renormalizable Phi^4 theory in 4-dimensional non-commutative space which was recently introduced by the Orsay group. By expl…
Translation-invariant models for non-commutative gauge fields
Daniel N. Blaschke, Francois Gieres, Erwin Kronberger +2
Motivated by the recent construction of a translation-invariant renormalizable non-commutative model for a scalar field (see arXiv:0802.0791 [math-ph]), we introduce models for non…
A Vector Supersymmetry in Noncommutative U(1) Gauge Theory with the Slavnov Term
Daniel N. Blaschke, Francois Gieres, Olivier Piguet +1
We consider noncommutative U(1) gauge theory with the additional term, involving a scalar field lambda, introduced by Slavnov in order to cure the infrared problem. we show that th…
Topological Yang-Mills Theories and Their Observables: a Superspace Approach
Jose Luiz Boldo, Clisthenis P. Constantinidis, Francois Gieres +2
Witten's observables of topological Yang-Mills theory, defined as classes of an equivariant cohomology, are reobtained as the BRST cohomology classes of a superspace version of the…
Observables in Topological Yang-Mills Theories
Jose Luis Boldo, Clisthenis P. Constantinidis, Francois Gieres +2
Using topological Yang-Mills theory as example, we discuss the definition and determination of observables in topological field theories (of Witten-type) within the superspace form…
On the symmetries of BF models and their relation with gravity
C. P. Constantinidis, F. Gieres, O. Piguet +1
The perturbative finiteness of various topological models (e.g. BF models) has its origin in an extra symmetry of the gauge-fixed action, the so-called vector supersymmetry. Since…
Symmetries of topological field theories in the BV-framework
F. Gieres, J. M. Grimstrup, H. Nieder +2
Topological field theories of Schwarz-type generally admit symmetries whose algebra does not close off-shell, e.g. the basic symmetries of BF models or vector supersymmetry of the…
Interacting six-dimensional topological field theories
F. Gieres, H. Nieder, T. Pisar +2
We study the gauge-fixing and symmetries (BRST-invariance and vector supersymmetry) of various six-dimensional topological models involving Abelian or non-Abelian 2-form potentials…
About Symmetries in Physics
Francois Gieres
The goal of this introduction to symmetries is to present some general ideas, to outline the fundamental concepts and results of the subject and to situate a bit the following lect…
d=2, N=2 Superconformal Symmetries and Models
Francois Delduc, Francois Gieres, Stephane Gourmelen
We discuss the following aspects of two-dimensional N=2 supersymmetric theories defined on compact super Riemann surfaces: parametrization of (2,0) and (2,2) superconformal structu…
Classical and super W-algebras from a zero-curvature condition
Francois Gieres, Stefan Theisen
Starting from superdifferential operators in an superfield formulation, we present a systematic prescription for the derivation of classical and super W-algebras…
On the holomorphic factorization for superconformal fields
Francois Gieres
For a generic value of the central charge, we prove the holomorphic factorization of partition functions for free superconformal fields which are defined on a compact Riemann surfa…
Superconformally covariant operators and super W algebras
Francois Gieres, Stefan Theisen
We study superdifferential operators of order which are covariant with respect to superconformal changes of coordinates on a compact super Riemann surface. We show that all…
Maurer-Cartan forms and equations for two-dimensional superdiffeomorphisms
Francois Gieres
We present explicit expressions for the Maurer-Cartan forms of the superdiffeomorphism group associated to a super Riemann surface. As an application to superconformal field theory…
Relating Weyl and diffeomorphism anomalies on super Riemann surfaces
Jean-Pierre Ader, Francois Gieres, Yves Noirot
Starting from the Wess-Zumino action associated to the super Weyl anomaly, we determine the local counterterm which allows to pass from this anomaly to the chirally split superdiff…