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Towards a holographic quark-hadron continuity

Towards a holographic quark-hadron continuity
Towards a holographic quark-hadron continuity

We study dense nuclear and quark matter within a single microscopic approach, namely the holographic Sakai-Sugimoto model. Nuclear matter is described via instantons in the bulk, and we show that instanton interactions are crucial for a continuous connection of chirally broken and chirally symmetric phases. The continuous path from nuclear to quark matter includes metastable and unstable stationary points of the potential, while the actual chiral phase transition remains of first order, as in earlier approximations. We show that the model parameters can be chosen to reproduce low-density properties of nuclear matter and observe a non-monotonic behavior of the speed of sound as a function of the baryon chemical potential, as suggested by constraints from QCD and astrophysics.

AdS-CFT Correspondence, Phase Diagram of QCD
1126-6708
Fadafan, Kazem Bitaghsir
09897b8e-7f1c-4303-8b67-e869811f9716
Kazemian, Farideh
882f9669-ff3f-4e64-bbdb-c997c5a050a3
Schmitt, Andreas
1765159f-255f-45e7-94ea-58c1c883d65f
Fadafan, Kazem Bitaghsir
09897b8e-7f1c-4303-8b67-e869811f9716
Kazemian, Farideh
882f9669-ff3f-4e64-bbdb-c997c5a050a3
Schmitt, Andreas
1765159f-255f-45e7-94ea-58c1c883d65f

Fadafan, Kazem Bitaghsir, Kazemian, Farideh and Schmitt, Andreas (2019) Towards a holographic quark-hadron continuity. Journal of High Energy Physics, 2019 (3). (doi:10.1007/JHEP03(2019)183).

Record type: Article

Abstract

We study dense nuclear and quark matter within a single microscopic approach, namely the holographic Sakai-Sugimoto model. Nuclear matter is described via instantons in the bulk, and we show that instanton interactions are crucial for a continuous connection of chirally broken and chirally symmetric phases. The continuous path from nuclear to quark matter includes metastable and unstable stationary points of the potential, while the actual chiral phase transition remains of first order, as in earlier approximations. We show that the model parameters can be chosen to reproduce low-density properties of nuclear matter and observe a non-monotonic behavior of the speed of sound as a function of the baryon chemical potential, as suggested by constraints from QCD and astrophysics.

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Accepted/In Press date: 13 March 2019
e-pub ahead of print date: 27 March 2019
Published date: March 2019
Keywords: AdS-CFT Correspondence, Phase Diagram of QCD

Identifiers

Local EPrints ID: 430065
URI: https://eprints.soton.ac.uk/id/eprint/430065
ISSN: 1126-6708
PURE UUID: 68842649-c507-4849-8609-39dea590ab6b
ORCID for Andreas Schmitt: ORCID iD orcid.org/0000-0003-2858-4450

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Date deposited: 11 Apr 2019 16:30
Last modified: 15 Aug 2019 00:32

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