Zobrazeno 1 - 10
of 104
pro vyhledávání: '"Negrão M"'
Following a previous work on Abelian (2,0)-gauge theories, one reassesses here the task of coupling (2,0) relaxed Yang-Mills super-potentials to a (2,0)-nonlinear Sigma-model, by gauging the isotropy or the isometry group of the latter. One pays spec
Externí odkaz:
http://arxiv.org/abs/hep-th/0006065
Publikováno v:
Int.J.Mod.Phys. A16 (2001) 189-200
Considering a class of (2,0)-super-Yang-Mills multiplets that accommodate a pair of independent gauge potentials in connection with a single symmetry group, we present here their coupling to ordinary matter and to non-linear $\sigma$-models in (2,0)-
Externí odkaz:
http://arxiv.org/abs/hep-th/9903126
Publikováno v:
Int.J.Mod.Phys. A18 (2003) 1991-2000
Following a previous work on Abelian (2,0)-gauge theories, one reassesses here the task of coupling (2,0) relaxed Yang-Mills superpotentials to a (2,0)- nonlinear $\sigma$-model, by gauging the isotropy or the isometry group of the latter. One pays s
Externí odkaz:
http://arxiv.org/abs/hep-th/0111175
We compute the combined effect of confinement, an external magnetic field and temperature on the vacuum of the charged scalar field using Schwinger's formula for the effective action in the imaginary time formalism. The final result reproduces an eff
Externí odkaz:
http://arxiv.org/abs/hep-th/9811095
The Casimir effect for Dirac as well as for scalar charged particles is influenced by external magnetic fields. It is also influenced by finite temperature. Here we consider the Casimir effect for a charged scalar field under the combined influence o
Externí odkaz:
http://arxiv.org/abs/hep-th/9810033
We compute the influence of boundary conditions on the Euler-Heisenberg effective Lagrangian scalar QED scalar for the case of a pure magnetic field. The boundary conditions constrain the quantum scalar field to vanish on two parallel planes separete
Externí odkaz:
http://arxiv.org/abs/hep-th/9809216
Publikováno v:
J.Phys.A32:4457-4462,1999
We compute the influence of an external magnetic field on the Casimir energy of a massive charged scalar field confined between two parallel infinite plates. For this case the obtained result shows that the magnetic field inhibits the Casimir effect.
Externí odkaz:
http://arxiv.org/abs/hep-th/9809214
The equivalence between rank-2 anti-symmetric tensor fields, considered as gauge potentials, and torsionless non-linear $\sigma$-models suggests us to study the possibility of coupling tensorial matter with Yang-Mills fields, through the gauging of t
Externí odkaz:
http://arxiv.org/abs/hep-th/9808174
One discusses here the connection between \sigma-model gauge anomalies and the existence of a connection with torsion that does not flatten the Ricci tensor of the target manifold, by considering a number of non-symmetric coset spaces. The influence
Externí odkaz:
http://arxiv.org/abs/hep-th/9802104
Publikováno v:
Phys.Rev. D51 (1995) 2478-2481
Massless perturbative QCD forbids, at leading order, the exclusive annihilation of proton-antiproton into some charmonium states, which, however, have been observed in the $p\bar p$ channel, indicating the significance of higher order and non perturb
Externí odkaz:
http://arxiv.org/abs/hep-ph/9403272