Baryon density contrast and strangeness abundance during the big bang confinement phase transition

Joseph I. Kapusta; Keith A. Olive

doi:10.1016/0370-2693(88)90949-5

Baryon density contrast and strangeness abundance during the big bang confinement phase transition

Joseph I. Kapusta, Keith A. Olive

Physics and Astronomy (Twin Cities)

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29 Scopus citations

Abstract

We study the baryon density contrast between the quark-gluon and hadron phases during the confinement phase transition in the early universe. We include all observed hadronic resonances. Neglecting interhadronic forces the baryon density contrast is of order unity or less, while including interhadronic forces leads to a contrast of order 7, for 160 <T_c<240 MeV. The strangeness/ baryon ration is of order unity in the quark-gluon phase, but in the hadron phase it can vary between 1 15 and unity depending on the interhadronic forces and on T_c.

Original language	English (US)
Pages (from-to)	295-299
Number of pages	5
Journal	Physics Letters B
Volume	209
Issue number	2-3
DOIs	https://doi.org/10.1016/0370-2693(88)90949-5
State	Published - Aug 4 1988

Bibliographical note

Funding Information:
J.K.'s research was supported by DOE under contract DE-FG02-87ER40328. K.O.'s research was supported in part by DOE grant No. DE-AC02-83ER-40105 and by a Presidential Young Investigator Award.

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title = "Baryon density contrast and strangeness abundance during the big bang confinement phase transition",

abstract = "We study the baryon density contrast between the quark-gluon and hadron phases during the confinement phase transition in the early universe. We include all observed hadronic resonances. Neglecting interhadronic forces the baryon density contrast is of order unity or less, while including interhadronic forces leads to a contrast of order 7, for 160 c<240 MeV. The strangeness/ baryon ration is of order unity in the quark-gluon phase, but in the hadron phase it can vary between 1 15 and unity depending on the interhadronic forces and on Tc.",

author = "Kapusta, {Joseph I.} and Olive, {Keith A.}",

note = "Funding Information: J.K.'s research was supported by DOE under contract DE-FG02-87ER40328. K.O.'s research was supported in part by DOE grant No. DE-AC02-83ER-40105 and by a Presidential Young Investigator Award.",

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T1 - Baryon density contrast and strangeness abundance during the big bang confinement phase transition

AU - Kapusta, Joseph I.

AU - Olive, Keith A.

N1 - Funding Information: J.K.'s research was supported by DOE under contract DE-FG02-87ER40328. K.O.'s research was supported in part by DOE grant No. DE-AC02-83ER-40105 and by a Presidential Young Investigator Award.

PY - 1988/8/4

Y1 - 1988/8/4

N2 - We study the baryon density contrast between the quark-gluon and hadron phases during the confinement phase transition in the early universe. We include all observed hadronic resonances. Neglecting interhadronic forces the baryon density contrast is of order unity or less, while including interhadronic forces leads to a contrast of order 7, for 160 c<240 MeV. The strangeness/ baryon ration is of order unity in the quark-gluon phase, but in the hadron phase it can vary between 1 15 and unity depending on the interhadronic forces and on Tc.

AB - We study the baryon density contrast between the quark-gluon and hadron phases during the confinement phase transition in the early universe. We include all observed hadronic resonances. Neglecting interhadronic forces the baryon density contrast is of order unity or less, while including interhadronic forces leads to a contrast of order 7, for 160 c<240 MeV. The strangeness/ baryon ration is of order unity in the quark-gluon phase, but in the hadron phase it can vary between 1 15 and unity depending on the interhadronic forces and on Tc.

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ER -

Baryon density contrast and strangeness abundance during the big bang confinement phase transition

Abstract

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