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Title

Invariant vacuum

AuthorsRobles Pérez, Salvador
Issue Date13-Oct-2017
PublisherElsevier
CitationPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 774: 608- 615 (2017)
AbstractWe apply the Lewis–Riesenfeld invariant method for the harmonic oscillator with time dependent mass and frequency to the modes of a charged scalar field that propagates in a curved, homogeneous and isotropic spacetime. We recover the Bunch–Davies vacuum in the case of a flat DeSitter spacetime, the equivalent one in the case of a closed DeSitter spacetime and the invariant vacuum in a curved spacetime that evolves adiabatically. In the three cases, it is computed the thermodynamical magnitudes of entanglement between the modes of the particles and antiparticles of the invariant vacuum, and the modification of the Friedmann equation caused by the existence of the energy density of entanglement. The amplitude of the vacuum fluctuations are also computed.
Description8 pags. -- Open Access funded by Creative Commons Atribution Licence 4.0
Publisher version (URL)https://doi.org/10.1016/j.physletb.2017.10.018
URIhttp://hdl.handle.net/10261/159034
Identifiersdoi: 10.1016/j.physletb.2017.10.018
issn: 0370-2693
Appears in Collections:(CFMAC-IFF) Artículos
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