Relics of cosmological quark-hadron phase transition

Abstract

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.

REVTEX, 4 pages, 2 eps figures

References in corpus (6)

• Cosmology from Maxima-1, Boomerang and COBE/DMR CMB Observations
• First Estimations of Cosmological Parameters From BOOMERANG
• Amplification of Cosmological Inhomogeneities by the QCD Transition
• Diffuse $\gamma$-ray background and primordial black hole constraints on the spectral index of density fluctuations
• The QCD phase transition in the inhomogeneous Universe
• Finite temperature effects on cosmological baryon diffusion and inhomogeneous Big-Bang nucleosynthesis

Cited by in corpus (9)

• Quark-Hadron Phase Transitions in Viscous Early Universe
• Quark-Hadron Phase Transitions in Brane-World Cosmologies
• Quark-hadron phase transition in a chameleon Brans-Dicke model of brane gravity
• Effect of extrinsic curvature on quark--hadron phase transition
• Quark-hadron phase transition in Brans-Dicke brane gravity
• DGP brane cosmology and quark-hadron phase transition
• QCD phase transition with a power law chameleon scalar field in the bulk
• Quark-hadron phase transition in DGP including BD brane
• Quark-Hadron Phase Transition in DGP Brane Gravity with Bulk Scalar Field