arXiv subjects

J. S da Cruz Filho

Publications and source records attributed to J. S da Cruz Filho.

3 recordsLinked to original sources

arXiv2020

Spin-1/2 particles in Phase space: Casimir effect and Stefan-Boltzmann law at finite temperature

The Dirac field, spin 1/2 particles, is investigated in phase space. The Dirac propagator is defined. The Thermo Field Dynamics (TFD) formalism is used to introduce finite temperature. The energy-momentum tensor is calculated at finite temperature. The Stefan-Boltzmann law is established and the Casimir effect is calculated for the Dirac field in phase space at zero and finite temperature. A comparative analysis with these results in standard quantum mechanics space is realized.

hep-th↗

arXiv2018

On Scalar Electromagnetism in Phase Space

In this paper the interaction of a scalar field and the electromagnetic field in phase space is analyzed. The scattering process is calculated up to first order in the Planck constant which is obtained by an expansion of the Moyal product in phase space. The transition amplitude is calculated in the same context.

hep-th↗

arXiv2018

Stefan-Boltzmann law and Casimir effect for the scalar field in phase space at finite temperature

In this paper we use the scalar field constructed in phase space to analyze the analogous Stefan-Boltzman law and Casimir effect both of them at finite temperature. The temperature is introduced by Thermo Field Dynamics (TFD) and the quantities are analyzed once projected in the coordinates space.

hep-th↗