4 papers
Spontaneous CPT asymmetry of the Universe
A. A. Andrianov, P. Giacconi, R. Soldati
The extended QED with renormalizable interactions breaking the Lorentz and CPT symmetry is considered and the phenomenological consequences of such a symmetry breaking are illumina…
Absence of Bose-Einstein condensation with a uniform field and contact interaction
Roberto Soldati, Alberto Zannoni
The behavior of a Bose-Einstein ideal gas of particles in a three dimensional space in the presence of a uniform field, such as gravity, and of contact interaction, describing the…
Effective action for Dirac spinors in the uniform electromagnetic background fields
Roberto Soldati, Lorenzo Sorbo
Some new expressions are found, concerning the effective action as a regularized path-integral for Dirac's spinors in {\it 3+1} dimensions, in the presence of general uniform (i.e.…
The Mandelstam--Leibbrandt Prescription and the Discretized Light Front Quantization
Roberto Soldati
It is shown that the quantization of the unphysical degrees of freedom, which leads to the Mandelstam--Leibbrandt prescription for the infrared spurious singularities in the contin…