Cosmic string induced sheet like baryon inhomogeneities at quark-hadron transition

Abstract

Cosmic strings moving through matter produce wakes where density is higher than the background density. We investigate the effects of such wakes occurring at the time of a first order quark-hadron transition in the early universe and show that they can lead to separation of quark-gluon plasma phase in the wake region, while the region outside the wake converts to the hadronic phase. Moving interfaces then trap large baryon densities in sheet like regions which can extend across the entire horizon. Typical separation between such sheets, at formation, is of the order of a km. Regions of baryon inhomogeneity of this nature, i.e. having a planar geometry, and separated by such large distance scales, appear to be well suited for the recent models of inhomogeneous nucleosynthesis to reconcile with the large baryon to photon ratio implied by the recent measurements of the cosmic microwave background power spectrum.

8 pages, 3 figures

Cited by in corpus (15)

• The first second of the Universe
• Baryon Inhomogeneity Generation in the Quark-Gluon Plasma Phase
• Measuring Cosmic Defect Correlations in Liquid Crystals
• Neutrino currents in wakes of cosmic strings
• Neutron Diffusion and Nucleosynthesis in an Inhomogeneous Big Bang Model
• Baryon inhomogeneity generation via cosmic strings at QCD scale and its effects on nucleosynthesis
• Effect of pre-existing baryon inhomogeneities on the dynamics of quark-hadron transition
• Baryon inhomogeneities in a charged quark gluon plasma
• Modulation of pulse profile as a signal for phase transitions in a pulsar core
• Magnetic reconnection in the wakes of cosmic strings
• Baryogenesis via Density Fluctuations with a Second Order Electroweak Phase Transition
• Diffusion coefficients and constraints on hadronic inhomogeneities in the early universe
• Iso-curvature fluctuations through axion trapping by cosmic string wakes
• Decay of baryon inhomogeneities in an expanding universe
• Magnetic field amplification and decay in cosmic string wakes