7 citations · 19 across the 5 of their papers we have counts for
9 papers
Parameter estimation in an anisotropic expanding spacetime
O. P. de Sá Neto, I. G. da Paz, P. R. S. Carvalho +1
In this work, we investigate how the anisotropy affects the cosmological parameters estimation. Here the anisotropy is incorporated as a small gravitational disturbance. We calcula…
Diffeomorphism symmetry effect on the O(N ) universality class
H. A. S. Costa, P. R. S. Carvalho
We probe the effect of diffeomorphism symmetry on the critical exponents values for massive O() scalar field theories in curved spacetime. We apply field-theoretic reno…
Influence of conformal symmetry on the amplitude ratios for O() models
H. A. S. Costa, P. R. S. Carvalho
In this Letter we compute analytically the effect of conformal symmetry on the radiative corrections to the amplitude ratios for O() massless scalar field theories in c…
Decoherence of a uniformly accelerated finite-time detector
Helder A. S. Costa
We study a uniformly accelerated detector coupled to a massless scalar field for a finite time interval. By considering the detector initially prepared in a superposition state, qu…
Ramsey interferometry as a witness of acceleration radiation
Helder A. S. Costa, Irismar G. da Paz, Paulo R. S. Carvalho +1
We adapt a typical Ramsey interferometer by inserting a linear accelerator capable of accelerating an atom inside a single-mode cavity. We demonstrate that this simple scheme allow…
NLO critical exponents of O() lambda scalar field theories in curved spacetime
H. A. S. Costa, P. R. S. Carvalho
In this paper we investigate analytically the conformal symmetry influence on the next-to-leading order radiative quantum corrections to critical exponents for massless O() $λϕ^…