41 citations · 459 across the 51 of their papers we have counts for
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Quantum Charged Spinning Massless Particles in 2+1 dimensions
Ivan Morales, Bruno Neves, Zui Oporto +1
Motivated by the conduction properties of graphene discovered and studied in the last decades, we consider the quantum dynamics of a massless, charged, spin 1/2 relativistic partic…
Behaviour of Charged Spinning Massless Particles
Ivan Morales, Bruno Neves, Zui Oporto +1
We revisit the classical theory of a relativistic massless charged point particle with spin and interacting with an external electromagnetic field. In particular, we give a proper…
Symanzik-Becchi-Rouet-Stora lessons on renormalizable models with broken symmetry: the case of Lorentz violation
Oswaldo M. Del Cima, Daniel H. T. Franco, Olivier Piguet
In this paper, we revisit the issue intensively studied in recent years on the generation of terms by radiative corrections in models with broken Lorentz symmetry. The algebraic pe…
Lorentz and CPT violation in QED revisited: A missing analysis
Oswaldo M. Del Cima, Jakson M. Fonseca, Daniel H. T. Franco +1
We investigate the breakdown of Lorentz symmetry in QED by a CPT violating interaction term consisting of the coupling of an axial fermion current with a constant vector field ,…
No parity anomaly in massless QED3: a BPHZL approach
Oswaldo M. Del Cima, Daniel H. T. Franco, Olivier Piguet +1
In this letter we call into question the perturbatively parity breakdown at 1-loop for the massless QED_3 frequently claimed in the literature. As long as perturbative quantum fiel…
A Vector Supersymmetry Killing the Infrared Singularity of Gauge Theories in Noncommutative Space
Daniel N. Blaschke, François Gieres, Olivier Piguet +1
We show that the "topological BF-type" term introduced by Slavnov in order to cure the infrared divergences of gauge theories in noncommutative space can be characterized as the co…
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…
Nonrelativistic Supersymmetry in Noncommutative Space
Gustavo S. Lozano, Olivier Piguet, Fidel A. Schaposnik +1
We analize a model of non relativistic matter in 2+1 dimensional noncommutative space. The matter fields interact with gauge fields whose dynamics is dictated by a Chern Simons ter…
Observables in Topological Yang-Mills Theories With Extended Shift Supersymmetry
Clisthenis P. Constantinidis, Olivier Piguet, Wesley Spalenza
We present a complete classification, at the classical level, of the observables of topological Yang-Mills theories with an extended shift supersymmetry of N generators, in any spa…
Gauge Fixing of Chern-Simons N-Extended Supergravity
Wander G. Ney, Olivier Piguet, Wesley Spalenza
We treat the N-extended supergravity in 2+1 space-time dimensions as a Yang-Mills gauge field with Chern-Simons action associated to the N-extended Poincaré supergroup. We fix the…
Superspace Gauge Fixing of Topological Yang-Mills Theories
Clisthenis P. Constantinidis, Olivier Piguet, Wesley Spalenza
We revisit the construction of topological Yang-Mills theories of the Witten type with arbitrary space-time dimension and number of ``shift supersymmetry'' generators, using a supe…
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…
Induced mass in N=2 super Yang-Mills theories
Sortelano A. Diniz, Olivier Piguet
The masses of the matter fields of N=2 Super-Yang-Mills theories can be defined as parameters of deformed supersymmetry transformations. The formulation used involves central charg…
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…
Mass of the Fayet Hypermultiplet Induced by a Central Charge Constraint
Sortelano Araujo Diniz, Olivier Piguet
We show that the mass of the Fayet hypermultiplet, which represents the matter sector of N=2 supersymmetric Yang-Mills theory, may be induced through a generalization of the centra…
Finiteness of PST self-dual models
Oswaldo M. Del Cima, Olivier Piguet, Marcelo S. Sarandy
The Pasti-Sorokin-Tonin model for describing chiral forms is considered at the quantum level. We study the ultraviolet and infrared behaviour of the model in two, four and six dime…
Diffeomorphism Invariant Theories and Vector Supersymmetry
Olivier Piguet
Einstein gravity in the Palatini first order formalism is shown to possess a vector supersymmetry of the type encountered in the topological gauge theories. A peculiar feature of t…
Ghost Equations and Diffeomorphism Invariant Theories
Olivier Piguet
Four-dimensional Einstein gravity in the Palatini first order formalism is shown to possess a vector supersymmetry of the same type as found in the topological theories for Yang-Mi…
Comment on ``On spin-1 massive particles coupled to a Chern-Simons field''
O. M. Del Cima, D. H. T. Franco, J. A. Helayel-Neto +1
In this comment we discuss some serious inconsistencies presented by Gomes, Malacarne and da Silva in their paper, Phys.Rev. D60 (1999) 125016 (hep-th/9908181).
Gauge Independence of the Effective Potential Revisited
Oswaldo M. Del Cima, Daniel H. T. Franco, Olivier Piguet
We apply the formalism of extended BRS symmetry to the investigation of the gauge dependence of the effective potential in a spontaneously symmetry broken gauge theory. This formal…
Exact Scale Invariance of the BF-Yang-Mills Theory in Three Dimensions
Oswaldo M. Del Cima, Daniel H. T. Franco, Jose A. Helayel-Neto +1
The ``extended'' BF-Yang-Mills theory in 3 dimensions, which contains a minimally coupled scalar field, is shown to be ultraviolet finite. It obeys a trivial Callan-Symanzik equati…
The Supercurrent Trace Identities of the N=1, D=4 Super-Yang-Mills Theory in the Wess-Zumino Gauge
Olivier Piguet, Sylvain Wolf
The supercurrent components of the N=1, D=4 Super-Yang-Mills theory in the Wess-Zumino gauge are coupled to the components of a background supergravitation field in the ``new minim…
On the Non-Renormalization Properties of Gauge Theories with Chern-Simons Terms
Oswaldo M. Del Cima, Daniel H. T. Franco, Jose A. Helayel-Neto +1
Considering three-dimensional Chern-Simons theory, either coupled to matter or with a Yang-Mills term, we show the validity of a trace identity, playing the role of a local form of…