Holographic QCD with topologically charged domain-wall/membranes

Feng Li Lin*, Shang Yu Wu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


We study the thermodynamical phase structures of holographic QCD with nontrivial topologically charged domain-wall/membranes which are originally related to the multiple θ-vacua in the large N c limit. We realize the topologically charged membranes as the holographic D6-brane fluxes in the Sakai-Sugimoto model. The D6-brane fluxes couple to the probe D8-D8̄ via Chern-Simon term, and act as the source for the baryonic current density of QCD. We find rich phase structures of the dual meson system by varying asymptotic separation of D8 and D8̄. Especially, there can be a thermodynamically favored and stable phase of finite baryonic current density. This provides the supporting evidence for the discovery of the topologically charged membranes found in the lattice QCD calculations. We also find a crossover phase with the limiting baryonic current density and temperature which suggest a Hagedorn-like phase transition of meson dissociation.

Original languageEnglish
Article number046
JournalJournal of High Energy Physics
Issue number9
Publication statusPublished - 2008 Sept 1


  • AdS-CFT correspondence
  • Lattice QCD
  • QCD

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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