Hidden Negative Energies in Strongly Accelerated Universes

We point out that theories of cosmological acceleration which have equation of state, w, such that 1+w is small but positive may still secretly violate the null energy condition. This violation implies the existence of observers for whom the background has infinitely negative energy densities, despi...

Descripción completa

Detalles Bibliográficos
Autores principales: Sawicki, Ignacy, Vikman, Alexander
Lenguaje:eng
Publicado: 2012
Materias:
Astrophysics and Astronomy
Acceso en línea:https://dx.doi.org/10.1103/PhysRevD.87.067301
http://cds.cern.ch/record/1478026
_version_ 1780925582973861888
author Sawicki, Ignacy
Vikman, Alexander
author_facet Sawicki, Ignacy
Vikman, Alexander
author_sort Sawicki, Ignacy
collection CERN
description We point out that theories of cosmological acceleration which have equation of state, w, such that 1+w is small but positive may still secretly violate the null energy condition. This violation implies the existence of observers for whom the background has infinitely negative energy densities, despite the fact that the perturbations are free of ghosts and gradient instabilities.
id cern-1478026
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2012
record_format invenio
spelling cern-14780262019-09-30T06:29:59Zdoi:10.1103/PhysRevD.87.067301http://cds.cern.ch/record/1478026engSawicki, IgnacyVikman, AlexanderHidden Negative Energies in Strongly Accelerated UniversesAstrophysics and AstronomyWe point out that theories of cosmological acceleration which have equation of state, w, such that 1+w is small but positive may still secretly violate the null energy condition. This violation implies the existence of observers for whom the background has infinitely negative energy densities, despite the fact that the perturbations are free of ghosts and gradient instabilities.arXiv:1209.2961CERN-PH-TH-2012-242oai:cds.cern.ch:14780262012-09-14
spellingShingle Astrophysics and Astronomy
Sawicki, Ignacy
Vikman, Alexander
Hidden Negative Energies in Strongly Accelerated Universes
title Hidden Negative Energies in Strongly Accelerated Universes
title_full Hidden Negative Energies in Strongly Accelerated Universes
title_fullStr Hidden Negative Energies in Strongly Accelerated Universes
title_full_unstemmed Hidden Negative Energies in Strongly Accelerated Universes
title_short Hidden Negative Energies in Strongly Accelerated Universes
title_sort hidden negative energies in strongly accelerated universes
topic Astrophysics and Astronomy
url https://dx.doi.org/10.1103/PhysRevD.87.067301
http://cds.cern.ch/record/1478026
work_keys_str_mv AT sawickiignacy hiddennegativeenergiesinstronglyaccelerateduniverses
AT vikmanalexander hiddennegativeenergiesinstronglyaccelerateduniverses

Ejemplares similares