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arXiv · 1204.5640

The Baryonic Phase in Holographic Descriptions of the QCD Phase Diagram

Nick Evans·Keun-Young Kim·Maria Magou·Yunseok Seo·Sang-Jin Sin
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Abstract

We study holographic models of the QCD temperature-chemical potential phase diagram based on the D3/D7 system with chiral symmetry breaking. The baryonic phase may be included through linked D5-D7 systems. In a previous analysis of a model with a running gauge coupling a baryonic phase was shown to exist to arbitrarily large chemical potential. Here we explore this phase in a more generic phenomenological setting with a step function dilaton profile. The change in dilaton generates a linear confining $\bar{q}q$ potential and opposes the screening effect of temperature. We show that the persistence of the baryonic phase depends on the step size and that QCD-like phase diagrams can be described. The baryonic phase's existence is qualitatively linked to the existence of confinement in Wilson loop computations in the background.

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Nick Evans, Keun-Young Kim, Maria Magou, Yunseok Seo, Sang-Jin Sin. 2012-04-25. The Baryonic Phase in Holographic Descriptions of the QCD Phase Diagram. https://doi.org/10.1007/jhep09(2012)045

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