Baryon Inhomogeneity Generation in the Quark-Gluon Plasma Phase

Abstract

We discuss the possibility of generation of baryon inhomogeneities in a quark-gluon plasma phase due to moving Z(3) interfaces. By modeling the dependence of effective mass of the quarks on the Polyakov loop order parameter, we study the reflection of quarks from collapsing Z(3) interfaces and estimate resulting baryon inhomogeneities in the context of the early universe. We argue that in the context of certain low energy scale inflationary models, it is possible that large Z(3) walls arise at the end of the reheating stage. Collapse of such walls could lead to baryon inhomogeneities which may be separated by large distances near the QCD scale. Importantly, the generation of these inhomogeneities is insensitive to the order, or even the existence, of the quark-hadron phase transition. We also briefly discuss the possibility of formation of quark nuggets in this model, as well as baryon inhomogeneity generation in relativistic heavy-ion collisions.

11 pages, 2 figures, revtex4, more detailed discussion added about formation and evolution of Z(3)domain walls in the universe

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Cited by in corpus (16)

• Revisiting the Phase Structure of the Polyakov-quark-meson Model in the presence of Vacuum Fermion Fluctuation
• Meson Masses and Mixing Angles in 2+1 Flavor Polyakov Quark Meson Sigma Model and Symmetry Restoration Effects
• Reviving quark nuggets as a candidate for dark matter
• Simulation of Z(3) walls and string production via bubble nucleation in a quark-hadron transition
• Comparing symmetry restoration trends for meson masses and mixing angles in the QCD-like three quark flavor models
• Exploring criticality in the QCD-like two quark flavour models
• Meta-stable States in Quark-Gluon Plasma
• Effects of quarks on the formation and evolution of Z(3) walls and strings in relativistic heavy-ion collisions
• Spontaneous CP violation in quark scattering from QCD Z(3) interfaces
• On-shell versus curvature mass parameter fixing schemes in the quark-meson model and its phase diagrams
• Domain growth and fluctuations during quenched transition to QGP in relativistic heavy-ion collisions
• A Novel Mechanism for $J/\psi$ Disintegration in Relativistic Heavy Ion Collisions
• Z(3) metastable states in Polyakov Quark Meson model
• Diffusion coefficients and constraints on hadronic inhomogeneities in the early universe
• Collective excitations in the hot QCD medium and the propagation of Heavy Quarks
• Spontaneous CP violating quark scattering from asymmetric $Z\left(3\right)$ interfaces in QGP