143 citations · 558 across the 22 of their papers we have counts for
22 papers
Effects of non-linear vacuum electrodynamics on the polarization plane of light
Volker Perlick, Claus Lämmerzahl, Alfredo Macias
We consider the Pleba{ń}ski class of nonlinear theories of vacuum electrodynamics, i.e., Lagrangian theories that are Lorentz invariant and gauge invariant. Our main goal is to der…
Space--time fluctuations and the spreading of wavepackets
E. Göklü, C. Lämmerzahl, A. Camacho +1
Using a density matrix description in space we study the evolution of wavepackets in a fluctuating space-time background. We assume that space-time fluctuations manifest as classic…
Temperature measurements of a Bose--Einstein condensate by ultra--intense light pulses
Abel Camacho, Luis F. Barragan, Alfredo Macias
Experimentally the temperature in a Bose--Einstein condensate is always deduced resorting to the comparison between the Maxwell--Boltzmann velocity distribution function and the de…
Midisuperspace Supersymmetric Quantum Cosmology
Alfredo Macias, Abel Camacho, Jutta Kunz +1
We investigate the canonical quantization in the framework of N=1 simple supergravity for the case of a very simple gravitational midisuperspace described by Gowdy cosmologic…
Thermodynamics of a photon gas and deformed dispersion relations
A. Camacho, A. Macias
We resort to the methods of statistical mechanics in order to determine the effects that a deformed dispersion relation has upon the thermodynamics of a photon gas. The ensuing mod…
Time paradox in Quantum Gravity
Alfredo Macias, Hernando Quevedo
The aim of this work is to review the concepts of time in quantum mechanics and general relativity to show their incompatibility. We show that the absolute character of Newtonian t…