Quark-hadron phase transition in a chameleon Brans-Dicke model of brane gravity

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dc.contributor.author Saaidi, Kh.
dc.contributor.author Mohammadi, A.
dc.contributor.author Golanbari, T.
dc.contributor.author Sheikhahmadi, H.
dc.contributor.author Ratra, Bharat V.
dc.date.accessioned 2012-09-20T21:15:34Z
dc.date.available 2012-09-20T21:15:34Z
dc.date.issued 2012-09-20
dc.identifier.uri http://hdl.handle.net/2097/14744
dc.description.abstract In this work, the quark-hadron phase transition in a chameleon Brans-Dicke model of brane world cosmology within an effective model of QCD is investigated. Whereas, in the chameleon Brans-Dicke model of brane world cosmology, the Friedmann equation and conservation of density energy are modified, resulting in an increased expansion in the early Universe. These have important effects on quark-hadron phase transitions. We investigate the evolution of the physical quantities relevant to quantitative descriptions of the early times, namely, the energy density, p , temperature, T, and the scale factor, a, before, during, and after the phase transition. We do this for smooth crossover formalism in which lattice QCD data is used for obtaining the matter equation of state and first order phase transition formalism. Our analyses show that the quark-hadron phase transition has occurred at approximately one nanosecond after the big bang and the general behavior of temperature is similar in both of two approaches. en_US
dc.relation.uri http://prd.aps.org/abstract/PRD/v86/i4/e045007 en_US
dc.rights © 2012 American Physical Society en_US
dc.subject Quark-hadron phase transition en_US
dc.subject Brans-Dicke en_US
dc.subject Brane world cosmology en_US
dc.title Quark-hadron phase transition in a chameleon Brans-Dicke model of brane gravity en_US
dc.type Article (publisher version) en_US
dc.date.published 2012 en_US
dc.citation.doi doi:10.1103/PhysRevD.86.045007 en_US
dc.citation.epage 045007-13 en_US
dc.citation.issue 4 en_US
dc.citation.jtitle Physical Review D - Particles, Fields, Gravitation and Cosmology en_US
dc.citation.spage 045007-1 en_US
dc.citation.volume 86 en_US
dc.contributor.authoreid ratra en_US

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