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From de sitter to de sitter: a non-singular inflationary universe driven by vacuum
(International Journal of Modern Physics D, 2006)
A semi-classical analysis of vacuum energy in the expanding space–time suggests that
the cosmological term decays with time, with a concomitant matter production. For
early times we find, in Planck units, Λ ≈ H4, where H ...
Scalar quantum electrodynamics via Duffin-Kemmer-Petiau gauge theory in the Heisenberg picture: Vacuum polarization
(2018-04-10)
Scalar Quantum Electrodynamics is investigated in the Heisenberg picture via the Duffin-Kemmer-Petiau gauge theory. On this framework, a perturbative method is used to compute the vacuum polarization tensor and its ...
Fermions bounded by kinks of false vacuum models
(Elsevier B.V., 2010-09-27)
In this work we address the question of existence of fermion bound-states and zero modes in the background of kinks of models presenting a structure with a false and a true vacuum. These models are important for the ...
Vacuum energy as a c-function for theories with dynamically generated masses
(Elsevier B.V., 2011-01-24)
We argue that in asymptotically free non-Abelian gauge theories possessing the phenomenon of dynamical mass generation the beta function is negative up to a value of the coupling constant that corresponds to a non-trivial ...
Fermions bounded by kinks of false vacuum models
(Elsevier B.V., 2010-09-27)
In this work we address the question of existence of fermion bound-states and zero modes in the background of kinks of models presenting a structure with a false and a true vacuum. These models are important for the ...
Vacuum energy as a c-function for theories with dynamically generated masses
(Elsevier B.V., 2011-01-24)
We argue that in asymptotically free non-Abelian gauge theories possessing the phenomenon of dynamical mass generation the beta function is negative up to a value of the coupling constant that corresponds to a non-trivial ...
Vacuum polarization of generalized quantum electrodynamics in the Heisenberg picture
(2020-02-10)
In this work, we consider the generalized quantum electrodynamics proposed by Podolsky in Heisenberg picture via Källén methodology. We investigate the effects of higher-order derivatives to understand the qualitative and ...