• Open Access

Chiral phase transition at finite chemical potential in 2+1-flavor soft-wall anti–de Sitter space QCD

Sean P. Bartz and Theodore Jacobson
Phys. Rev. C 97, 044908 – Published 16 April 2018

Abstract

The phase transition from hadronic matter to chirally symmetric quark-gluon plasma is expected to be a rapid crossover at zero quark chemical potential (μ), becoming first order at some finite value of μ, indicating the presence of a critical point. Using a three-flavor soft-wall model of anti–de Sitter/QCD, we investigate the effect of varying the light and strange quark masses on the order of the chiral phase transition. At zero quark chemical potential, we reproduce the Columbia Plot, which summarizes the results of lattice QCD and other holographic models. We then extend this holographic model to examine the effects of finite quark chemical potential. We find that the the chemical potential does not affect the critical line that separates first-order from rapid crossover transitions. This excludes the possibility of a critical point in this model, suggesting that a different setup is necessary to reproduce all the features of the QCD phase diagram.

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  • Received 31 December 2017

DOI:https://doi.org/10.1103/PhysRevC.97.044908

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.

Published by the American Physical Society

Physics Subject Headings (PhySH)

Particles & FieldsNuclear Physics

Authors & Affiliations

Sean P. Bartz* and Theodore Jacobson

  • Department of Physics and Astronomy, Macalester College, St. Paul, Minnesota 55105, USA

  • *sbartz@macalester.edu
  • tjacobs1@macalester.edu

Article Text

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Issue

Vol. 97, Iss. 4 — April 2018

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