Time-Dependent Vacuum Energy Induced by $D$-Particle Recoil

We consider cosmology in the framework of a `material reference system' of D particles, including the effects of quantum recoil induced by closed-string probe particles. We find a time-dependent contribution to the cosmological vacuum energy, which relaxes to zero as $\sim 1/ t^2$ for large tim...

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Detalles Bibliográficos
Autores principales: Ellis, John R., Mavromatos, N.E., Nanopoulos, Dimitri V.
Lenguaje:eng
Publicado: 1998
Materias:
General Relativity and Cosmology
Acceso en línea:https://dx.doi.org/10.1023/A:1001993226227
http://cds.cern.ch/record/369556
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author Ellis, John R.
Mavromatos, N.E.
Nanopoulos, Dimitri V.
author_facet Ellis, John R.
Mavromatos, N.E.
Nanopoulos, Dimitri V.
author_sort Ellis, John R.
collection CERN
description We consider cosmology in the framework of a `material reference system' of D particles, including the effects of quantum recoil induced by closed-string probe particles. We find a time-dependent contribution to the cosmological vacuum energy, which relaxes to zero as $\sim 1/ t^2$ for large times $t$. If this energy density is dominant, the Universe expands with a scale factor $R(t) observational constraints from high-redshift supernovae, and may also respect other phenomenological bounds on time variation in the vacuum energy imposed by early cosmology.
id cern-369556
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1998
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spelling cern-3695562023-03-14T18:20:41Zdoi:10.1023/A:1001993226227http://cds.cern.ch/record/369556engEllis, John R.Mavromatos, N.E.Nanopoulos, Dimitri V.Time-Dependent Vacuum Energy Induced by $D$-Particle RecoilGeneral Relativity and CosmologyWe consider cosmology in the framework of a `material reference system' of D particles, including the effects of quantum recoil induced by closed-string probe particles. We find a time-dependent contribution to the cosmological vacuum energy, which relaxes to zero as $\sim 1/ t^2$ for large times $t$. If this energy density is dominant, the Universe expands with a scale factor $R(t) observational constraints from high-redshift supernovae, and may also respect other phenomenological bounds on time variation in the vacuum energy imposed by early cosmology.We consider cosmology in the framework of a `material reference system' of D particles, including the effects of quantum recoil induced by closed-string probe particles. We find a time-dependent contribution to the cosmological vacuum energy, which relaxes to zero as $\sim 1/ t^2$ for large times $t$. If this energy density is dominant, the Universe expands with a scale factor $R(t) \sim t^2$. We show that this possibility is compatible with recent observational constraints from high-redshift supernovae, and may also respect other phenomenological bounds on time variation in the vacuum energy imposed by early cosmology.gr-qc/9810086ACT-9-98CTP-TAMU-39-98OUTP-98-74-PCERN-TH-98-341ACT-1998-9CTP-TAMU-98-39OUTP-98-74-Poai:cds.cern.ch:3695561998-10-30
spellingShingle General Relativity and Cosmology
Ellis, John R.
Mavromatos, N.E.
Nanopoulos, Dimitri V.
Time-Dependent Vacuum Energy Induced by $D$-Particle Recoil
title Time-Dependent Vacuum Energy Induced by $D$-Particle Recoil
title_full Time-Dependent Vacuum Energy Induced by $D$-Particle Recoil
title_fullStr Time-Dependent Vacuum Energy Induced by $D$-Particle Recoil
title_full_unstemmed Time-Dependent Vacuum Energy Induced by $D$-Particle Recoil
title_short Time-Dependent Vacuum Energy Induced by $D$-Particle Recoil
title_sort time-dependent vacuum energy induced by $d$-particle recoil
topic General Relativity and Cosmology
url https://dx.doi.org/10.1023/A:1001993226227
http://cds.cern.ch/record/369556
work_keys_str_mv AT ellisjohnr timedependentvacuumenergyinducedbydparticlerecoil
AT mavromatosne timedependentvacuumenergyinducedbydparticlerecoil
AT nanopoulosdimitriv timedependentvacuumenergyinducedbydparticlerecoil

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