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Article: Cosmological dynamics of dark matter Bose-Einstein condensation

TitleCosmological dynamics of dark matter Bose-Einstein condensation
Authors
Issue Date2011
PublisherAmerican Physical Society. The Journal's web site is located at http://prd.aps.org
Citation
Physical Review D (Particles, Fields, Gravitation and Cosmology), 2011, v. 83 n. 12, article no. 123515 How to Cite?
AbstractOnce the critical temperature of a cosmological boson gas is less than the critical temperature, a Bose-Einstein condensation process can always take place during the cosmic history of the Universe. In the Bose-Einstein condensation model, dark matter can be described as a nonrelativistic, Newtonian gravitational condensate, whose density and pressure are related by a barotropic equation of state, with a barotropic index equal to one. In the present work, we study the Bose-Einstein condensation process in a cosmological context by assuming that this process can be described (at least approximately) as a first-order phase transition. We analyze the evolution of the physical quantities relevant for the physical description of the early universe, namely, the energy density, temperature, and scale factor, before, during, and after the Bose-Einstein condensation (phase transition). We also consider in detail the epoch when the Universe evolved through a mixed condensate-normal dark matter phase-with a monotonically growing Bose-Einstein dark matter component. An important parameter characterizing the Bose-Einstein condensation is the condensate dark matter fraction, whose time evolution describes the time dynamics of the conversion process. The behavior of this parameter during the cosmological condensation process is also analyzed in detail. To study the cosmological dynamics and evolution we use both analytical and numerical methods. The presence of the condensate dark matter and of the Bose-Einstein phase transition could have modified drastically the cosmological evolution of the early universe, as well as the large scale structure formation process. © 2011 American Physical Society.
Persistent Identifierhttp://hdl.handle.net/10722/142484
ISSN
2014 Impact Factor: 4.643
2015 SCImago Journal Rankings: 1.882
ISI Accession Number ID
Funding AgencyGrant Number
government of the Hong Kong SAR
Funding Information:

This work is supported by a GRF grant of the government of the Hong Kong SAR.

 

DC FieldValueLanguage
dc.contributor.authorHarko, Ten_US
dc.date.accessioned2011-10-28T02:46:53Z-
dc.date.available2011-10-28T02:46:53Z-
dc.date.issued2011en_US
dc.identifier.citationPhysical Review D (Particles, Fields, Gravitation and Cosmology), 2011, v. 83 n. 12, article no. 123515en_US
dc.identifier.issn1550-7998-
dc.identifier.urihttp://hdl.handle.net/10722/142484-
dc.description.abstractOnce the critical temperature of a cosmological boson gas is less than the critical temperature, a Bose-Einstein condensation process can always take place during the cosmic history of the Universe. In the Bose-Einstein condensation model, dark matter can be described as a nonrelativistic, Newtonian gravitational condensate, whose density and pressure are related by a barotropic equation of state, with a barotropic index equal to one. In the present work, we study the Bose-Einstein condensation process in a cosmological context by assuming that this process can be described (at least approximately) as a first-order phase transition. We analyze the evolution of the physical quantities relevant for the physical description of the early universe, namely, the energy density, temperature, and scale factor, before, during, and after the Bose-Einstein condensation (phase transition). We also consider in detail the epoch when the Universe evolved through a mixed condensate-normal dark matter phase-with a monotonically growing Bose-Einstein dark matter component. An important parameter characterizing the Bose-Einstein condensation is the condensate dark matter fraction, whose time evolution describes the time dynamics of the conversion process. The behavior of this parameter during the cosmological condensation process is also analyzed in detail. To study the cosmological dynamics and evolution we use both analytical and numerical methods. The presence of the condensate dark matter and of the Bose-Einstein phase transition could have modified drastically the cosmological evolution of the early universe, as well as the large scale structure formation process. © 2011 American Physical Society.-
dc.languageengen_US
dc.publisherAmerican Physical Society. The Journal's web site is located at http://prd.aps.org-
dc.relation.ispartofPhysical Review D (Particles, Fields, Gravitation and Cosmology)en_US
dc.rightsPhysical Review D (Particles, Fields, Gravitation and Cosmology). Copyright © American Physical Society.-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.titleCosmological dynamics of dark matter Bose-Einstein condensationen_US
dc.typeArticleen_US
dc.identifier.emailHarko, T: harko@hkucc.hku.hken_US
dc.identifier.authorityHarko, TC=rp01333en_US
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1103/PhysRevD.83.123515-
dc.identifier.scopuseid_2-s2.0-79960760918-
dc.identifier.hkuros196862en_US
dc.identifier.volume83en_US
dc.identifier.issue12, article no. 123515-
dc.identifier.isiWOS:000291607200001-
dc.publisher.placeUnited States-

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