Holographic QCD and magnetic fields

Umut Gürsoy

doi:10.1140/epja/s10050-021-00554-0

Holographic QCD and magnetic fields

Umut Gürsoy^*

^*Corresponding author for this work

Research output: Contribution to journal › Review article › peer-review

Abstract

We review the holographic approach to electromagnetic phenomena in large N QCD. After a brief discussion of earlier holographic models, we concentrate on the improved holographic QCD model extended to involve magnetically induced phenomena. We explore the influence of magnetic fields on the QCD ground state, focusing on (inverse) magnetic catalysis of chiral condensate, investigate the phase diagram of the theory as a function of magnetic field, temperature and quark chemical potential, and, finally discuss effects of magnetic fields on the quark–anti-quark potential, shear viscosity, speed of sound and magnetization.

Original language	English
Article number	247
Pages (from-to)	1-17
Number of pages	17
Journal	European Physical Journal A
Volume	57
Issue number	7
DOIs	https://doi.org/10.1140/epja/s10050-021-00554-0
Publication status	Published - 26 Jul 2021

Bibliographical note

Funding Information:
This review grew out of a long series of work in collaboration mainly with Elias Kiritsis, Francesco Nitti, Matti Jarvinen, Liuba Mazzanti, Govert Nijs and Juan Pedraza but also including Tuna Demircik, Tara Drwenski, Ioannis Iatrakis, Aron Jansen, Georgios Michalogiorgakis, Govert Nijs, Andy O’Bannon, Marco Panero, Raimond Snellings, Andreas Schafer and Wilke van der Schee to all of whom I am grateful. The author is partially supported by the Delta-Institute for Theoretical Physics (D-ITP), both funded by the Dutch Ministry of Education, Culture and Science (OCW).

Publisher Copyright:
© 2021, The Author(s).

Funding

This review grew out of a long series of work in collaboration mainly with Elias Kiritsis, Francesco Nitti, Matti Jarvinen, Liuba Mazzanti, Govert Nijs and Juan Pedraza but also including Tuna Demircik, Tara Drwenski, Ioannis Iatrakis, Aron Jansen, Georgios Michalogiorgakis, Govert Nijs, Andy O’Bannon, Marco Panero, Raimond Snellings, Andreas Schafer and Wilke van der Schee to all of whom I am grateful. The author is partially supported by the Delta-Institute for Theoretical Physics (D-ITP), both funded by the Dutch Ministry of Education, Culture and Science (OCW).

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s10050-021-00554-0Final published version, 1.71 MBLicence: CC BY

Cite this

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abstract = "We review the holographic approach to electromagnetic phenomena in large N QCD. After a brief discussion of earlier holographic models, we concentrate on the improved holographic QCD model extended to involve magnetically induced phenomena. We explore the influence of magnetic fields on the QCD ground state, focusing on (inverse) magnetic catalysis of chiral condensate, investigate the phase diagram of the theory as a function of magnetic field, temperature and quark chemical potential, and, finally discuss effects of magnetic fields on the quark–anti-quark potential, shear viscosity, speed of sound and magnetization.",

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N2 - We review the holographic approach to electromagnetic phenomena in large N QCD. After a brief discussion of earlier holographic models, we concentrate on the improved holographic QCD model extended to involve magnetically induced phenomena. We explore the influence of magnetic fields on the QCD ground state, focusing on (inverse) magnetic catalysis of chiral condensate, investigate the phase diagram of the theory as a function of magnetic field, temperature and quark chemical potential, and, finally discuss effects of magnetic fields on the quark–anti-quark potential, shear viscosity, speed of sound and magnetization.

AB - We review the holographic approach to electromagnetic phenomena in large N QCD. After a brief discussion of earlier holographic models, we concentrate on the improved holographic QCD model extended to involve magnetically induced phenomena. We explore the influence of magnetic fields on the QCD ground state, focusing on (inverse) magnetic catalysis of chiral condensate, investigate the phase diagram of the theory as a function of magnetic field, temperature and quark chemical potential, and, finally discuss effects of magnetic fields on the quark–anti-quark potential, shear viscosity, speed of sound and magnetization.

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DO - 10.1140/epja/s10050-021-00554-0

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Holographic QCD and magnetic fields

Abstract

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