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Thermal Transitions in Domain Wall AdS/QCD

Thermal Transitions in Domain Wall AdS/QCD
Thermal Transitions in Domain Wall AdS/QCD
We study thermal transitions in a Domain Wall AdS/QCD model. The model is based on the D5/probe D7 system with a discontinuous mass profile which restricts chiral fermions to 3+1 dimensional domain walls. Fluctuations on the domain wall are dual to the quark mass and condensate and reveal the relation between domain wall separation and the quark mass. The massive quarks exhibit a second order thermal, meson melting transition. Witten's multi-trace prescription can be used to interpret these configurations as having a dynamical mass from a Nambu-Jona-Lasinio interaction - here the transition is first order. Confinement can be introduced into the gauge sector by compactifying one direction of the D5. Compactification induces chiral symmetry breaking and there is a first order thermal restoration transition. If an NJL interaction is also introduced then the confinement and chiral symmetry breaking scales can be separated.
hep-th, hep-ph
2470-0010
Evans, Nick
33dfbb52-64dd-4c1f-9cd1-074faf2be4b3
Mitchell, Jack
12edf606-422d-4d9d-9326-aa4fc86b5af0
Evans, Nick
33dfbb52-64dd-4c1f-9cd1-074faf2be4b3
Mitchell, Jack
12edf606-422d-4d9d-9326-aa4fc86b5af0

Evans, Nick and Mitchell, Jack (2022) Thermal Transitions in Domain Wall AdS/QCD. Physical Review D, 106, [086018].

Record type: Article

Abstract

We study thermal transitions in a Domain Wall AdS/QCD model. The model is based on the D5/probe D7 system with a discontinuous mass profile which restricts chiral fermions to 3+1 dimensional domain walls. Fluctuations on the domain wall are dual to the quark mass and condensate and reveal the relation between domain wall separation and the quark mass. The massive quarks exhibit a second order thermal, meson melting transition. Witten's multi-trace prescription can be used to interpret these configurations as having a dynamical mass from a Nambu-Jona-Lasinio interaction - here the transition is first order. Confinement can be introduced into the gauge sector by compactifying one direction of the D5. Compactification induces chiral symmetry breaking and there is a first order thermal restoration transition. If an NJL interaction is also introduced then the confinement and chiral symmetry breaking scales can be separated.

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2207.10374v1 - Author's Original
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PhysRevD.106.086018 - Version of Record
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10.1103/PhysRevD.106.086018 - Version of Record
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More information

Accepted/In Press date: 21 July 2022
Published date: 27 October 2022
Additional Information: 8 pages, 9 figures
Keywords: hep-th, hep-ph

Identifiers

Local EPrints ID: 472306
URI: http://eprints.soton.ac.uk/id/eprint/472306
ISSN: 2470-0010
PURE UUID: 88ebdfdb-a837-4092-9a5f-76d667eee6ad

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Date deposited: 30 Nov 2022 18:04
Last modified: 30 Nov 2022 18:07

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