On the interplay between magnetic field and anisotropy in holographic QCD
Abstract We investigate the combined effects of anisotropy and a magnetic field in strongly interacting gauge theories by the gauge/gravity correspondence. Our main motivation is the quark-gluon plasma produced in off-central heavy-ion collisions which exhibits...
| Main Authors: | , , , |
|---|---|
| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
Springer Berlin Heidelberg
2022
|
| Online Access: | https://hdl.handle.net/1721.1/132067.2 |
| _version_ | 1811083325335404544 |
|---|---|
| author | Gürsoy, Umut Järvinen, Matti Nijs, Govert Pedraza, Juan F |
| author2 | Massachusetts Institute of Technology. Center for Theoretical Physics |
| author_facet | Massachusetts Institute of Technology. Center for Theoretical Physics Gürsoy, Umut Järvinen, Matti Nijs, Govert Pedraza, Juan F |
| author_sort | Gürsoy, Umut |
| collection | MIT |
| description | Abstract
We investigate the combined effects of anisotropy and a magnetic field in strongly interacting gauge theories by the gauge/gravity correspondence. Our main motivation is the quark-gluon plasma produced in off-central heavy-ion collisions which exhibits large anisotropy in pressure gradients as well as large external magnetic fields. We explore two different configurations, with the anisotropy either parallel or perpendicular to the magnetic field, focusing on the competition and interplay between the two. A detailed study of the RG flow in the ground state reveals a rich structure where depending on which of the two, anisotropy or magnetic field, is stronger, intermediate geometries with approximate AdS4 × ℝ and AdS3 × ℝ2 factors arise. This competition is also manifest in the phase structure at finite temperature, specifically in the dependence of the chiral transition temperature on anisotropy and magnetic field, from which we infer the presence of inverse magnetic and anisotropic catalyses of the chiral condensate. Finally, we consider other salient observables in the theory, including the quark-antiquark potential, shear viscosity, entanglement entropy and the butterfly velocity. We demonstrate that they serve as good probes of the theory, in particular, distinguishing between the effects of the magnetic field and anisotropy in the ground and plasma states. We also find that the butterfly velocity, which codifies how fast information propagates in the plasma, exhibits a rich structure as a function of temperature, anisotropy and magnetic field, exceeding the conformal value in certain regimes. |
| first_indexed | 2024-09-23T12:31:16Z |
| format | Article |
| id | mit-1721.1/132067.2 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T12:31:16Z |
| publishDate | 2022 |
| publisher | Springer Berlin Heidelberg |
| record_format | dspace |
| spelling | mit-1721.1/132067.22022-02-07T23:17:06Z On the interplay between magnetic field and anisotropy in holographic QCD Gürsoy, Umut Järvinen, Matti Nijs, Govert Pedraza, Juan F Massachusetts Institute of Technology. Center for Theoretical Physics Abstract We investigate the combined effects of anisotropy and a magnetic field in strongly interacting gauge theories by the gauge/gravity correspondence. Our main motivation is the quark-gluon plasma produced in off-central heavy-ion collisions which exhibits large anisotropy in pressure gradients as well as large external magnetic fields. We explore two different configurations, with the anisotropy either parallel or perpendicular to the magnetic field, focusing on the competition and interplay between the two. A detailed study of the RG flow in the ground state reveals a rich structure where depending on which of the two, anisotropy or magnetic field, is stronger, intermediate geometries with approximate AdS4 × ℝ and AdS3 × ℝ2 factors arise. This competition is also manifest in the phase structure at finite temperature, specifically in the dependence of the chiral transition temperature on anisotropy and magnetic field, from which we infer the presence of inverse magnetic and anisotropic catalyses of the chiral condensate. Finally, we consider other salient observables in the theory, including the quark-antiquark potential, shear viscosity, entanglement entropy and the butterfly velocity. We demonstrate that they serve as good probes of the theory, in particular, distinguishing between the effects of the magnetic field and anisotropy in the ground and plasma states. We also find that the butterfly velocity, which codifies how fast information propagates in the plasma, exhibits a rich structure as a function of temperature, anisotropy and magnetic field, exceeding the conformal value in certain regimes. 2022-02-07T23:17:05Z 2021-09-20T17:41:46Z 2022-02-07T23:17:05Z 2021-03-18 2021-03-21T04:49:27Z Article http://purl.org/eprint/type/JournalArticle 1029-8479 https://hdl.handle.net/1721.1/132067.2 Journal of High Energy Physics. 2021 Mar 18;2021(3):180 PUBLISHER_CC en https://dx.doi.org/10.1007/JHEP03(2021)180 Journal of High Energy Physics Creative Commons Attribution https://creativecommons.org/licenses/by/4.0/ The Author(s) application/octet-stream Springer Berlin Heidelberg Springer Berlin Heidelberg |
| spellingShingle | Gürsoy, Umut Järvinen, Matti Nijs, Govert Pedraza, Juan F On the interplay between magnetic field and anisotropy in holographic QCD |
| title | On the interplay between magnetic field and anisotropy in holographic QCD |
| title_full | On the interplay between magnetic field and anisotropy in holographic QCD |
| title_fullStr | On the interplay between magnetic field and anisotropy in holographic QCD |
| title_full_unstemmed | On the interplay between magnetic field and anisotropy in holographic QCD |
| title_short | On the interplay between magnetic field and anisotropy in holographic QCD |
| title_sort | on the interplay between magnetic field and anisotropy in holographic qcd |
| url | https://hdl.handle.net/1721.1/132067.2 |
| work_keys_str_mv | AT gursoyumut ontheinterplaybetweenmagneticfieldandanisotropyinholographicqcd AT jarvinenmatti ontheinterplaybetweenmagneticfieldandanisotropyinholographicqcd AT nijsgovert ontheinterplaybetweenmagneticfieldandanisotropyinholographicqcd AT pedrazajuanf ontheinterplaybetweenmagneticfieldandanisotropyinholographicqcd |