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hep-th2003
Remarks on the Causality, Unitarity and Supersymmetric Extension of the Lorentz and CPT-Violating Maxwell-Chern-Simons Model
A. P. Baeta Scarpelli, H. Belich, J. L. Boldo +3
The gauge-invariant Chern-Simons-type Lorentz- and CPT-breaking term is here re-assessed and issues like causality, unitarity, spontaneous gauge-symmetry breaking are investigated.…
hep-th2003
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…
hep-th2002
Discussing the Spectrum of the Kalb-Ramond Field Coupled to 3D-Gravity
J. L. Boldo, J. A. Helayel-Neto, N. Panza
The mechanism of dynamical mass generation for the gauge field is studied through 1-loop. We find out that torsion is an obstruction to the appearance of a 1-loop mass correction.…