Relics of cosmological quark-hadron phase transition

Details Relics of cosmological quark-hadron phase transition Relics of cosmological quark-hadron phase transition

1999-01-21

arxiv.org/abs/astro-ph/9901286v1

Phys.Rev. D64 (2001) 067301

Astronomy and Astrophysics

Astrophysics

REVTEX, 4 pages, 2 eps figures

Scientific paper

10.1103/PhysRevD.64.067301

We propose that the amplified density fluctuations by the vanishing sound velocity effect during the cosmological quark-hadron phase transition lead to quark-gluon plasma lumps decoupled from the expansion of the universe, which may evolve to quark nuggets (QNs). Assuming power-law spectrum of density fluctuations, we investigate the parameter ranges for the QNs to play the role of baryonic dark matter and give inhomogeneities which could affect big-bang nucleosynthesis within the observational bounds of CMBR anisotropy. The QNs can give the strongest constraint ever found on the spectral index.

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