Rho meson condensation at finite isospin chemical potential in a holographic model for QCD

Ofer Aharony, Kasper Peeters, Jacob Sonnenschein, Marija Zamaklar

Research output: Contribution to journalArticlepeer-review

Abstract

We analyze the effect of an isospin chemical potential μ I in the Sakai-Sugimoto model, which is the string dual of a confining gauge theory related to large N c QCD, at temperatures below the chiral symmetry restoration temperature. For small chemical potentials we show that the results agree with expectations from the low-energy chiral Lagrangian, and the charged pion condenses. When the chemical potential reaches a critical value μ I = μ crit 1.7m ρ, the lowest vector meson (the ''rho meson'') becomes massless, and it condenses (in addition to the pion condensate) for μ 1crit. This spontaneously breaks the rotational symmetry, as well as a residual U(1) flavor symmetry. We numerically construct the resulting new ground state for μ 1μ crit.

Original languageEnglish
Article number071
JournalJournal of High Energy Physics
Volume2008
Issue number2
DOIs
StatePublished - 1 Feb 2008

Keywords

  • Chiral lagrangians
  • Gauge-gravity correspondence

Fingerprint

Dive into the research topics of 'Rho meson condensation at finite isospin chemical potential in a holographic model for QCD'. Together they form a unique fingerprint.

Cite this