Thermal diffusivity and pole-skipping in the incoherent semilocally critical IR
Pole-skipping offers compelling evidence for the hydrodynamic origin of chaotic behavior in strongly coupled quantum systems. We demonstrate that the cumulative effect of higher-order corrections to the hydrodynamic diffusive mode, captured by the parameter Ω, determines the thermal diffusivity thro...
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Elsevier
2025-07-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269325003521 |
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| author | Hyun-Sik Jeong |
| author_facet | Hyun-Sik Jeong |
| author_sort | Hyun-Sik Jeong |
| collection | DOAJ |
| description | Pole-skipping offers compelling evidence for the hydrodynamic origin of chaotic behavior in strongly coupled quantum systems. We demonstrate that the cumulative effect of higher-order corrections to the hydrodynamic diffusive mode, captured by the parameter Ω, determines the thermal diffusivity through chaos parameters, providing new insights into the interplay between chaos and hydrodynamics. In the incoherent limit, where momentum relaxation is pronounced, we show that the thermodynamically stable phase corresponds to a semi-locally critical IR fixed point. This finding extends previous analyses of simple IR fixed points and may offer a gravity dual description for stable phases beyond the Sachdev-Ye-Kitaev model in the incoherent regime. Additionally, we connect our findings to a universal bound on the thermal diffusion constant in holography, establishing a direct link with the dynamical critical exponent z. We derive a new relation, Ω=(2−z)/(2z−2), and propose that it characterizes the thermodynamically stable phase for generic values of z. |
| format | Article |
| id | doaj-art-e6b7c6b193db4bb39004b85b1fcbe64f |
| institution | OA Journals |
| issn | 0370-2693 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj-art-e6b7c6b193db4bb39004b85b1fcbe64f2025-08-20T01:55:31ZengElsevierPhysics Letters B0370-26932025-07-0186613959110.1016/j.physletb.2025.139591Thermal diffusivity and pole-skipping in the incoherent semilocally critical IRHyun-Sik Jeong0Instituto de Física Teórica UAM/CSIC, Calle Nicolás Cabrera 13-15, Cantoblanco, 28049 Madrid, Spain; Departamento de Física Teórica, Universidad Autónoma de Madrid, 28049 Madrid, Spain; Correspondence to: Instituto de Física Teórica UAM/CSIC, Calle Nicolás Cabrera 13-15, Cantoblanco, 28049 Madrid, Spain.Pole-skipping offers compelling evidence for the hydrodynamic origin of chaotic behavior in strongly coupled quantum systems. We demonstrate that the cumulative effect of higher-order corrections to the hydrodynamic diffusive mode, captured by the parameter Ω, determines the thermal diffusivity through chaos parameters, providing new insights into the interplay between chaos and hydrodynamics. In the incoherent limit, where momentum relaxation is pronounced, we show that the thermodynamically stable phase corresponds to a semi-locally critical IR fixed point. This finding extends previous analyses of simple IR fixed points and may offer a gravity dual description for stable phases beyond the Sachdev-Ye-Kitaev model in the incoherent regime. Additionally, we connect our findings to a universal bound on the thermal diffusion constant in holography, establishing a direct link with the dynamical critical exponent z. We derive a new relation, Ω=(2−z)/(2z−2), and propose that it characterizes the thermodynamically stable phase for generic values of z.http://www.sciencedirect.com/science/article/pii/S0370269325003521 |
| spellingShingle | Hyun-Sik Jeong Thermal diffusivity and pole-skipping in the incoherent semilocally critical IR Physics Letters B |
| title | Thermal diffusivity and pole-skipping in the incoherent semilocally critical IR |
| title_full | Thermal diffusivity and pole-skipping in the incoherent semilocally critical IR |
| title_fullStr | Thermal diffusivity and pole-skipping in the incoherent semilocally critical IR |
| title_full_unstemmed | Thermal diffusivity and pole-skipping in the incoherent semilocally critical IR |
| title_short | Thermal diffusivity and pole-skipping in the incoherent semilocally critical IR |
| title_sort | thermal diffusivity and pole skipping in the incoherent semilocally critical ir |
| url | http://www.sciencedirect.com/science/article/pii/S0370269325003521 |
| work_keys_str_mv | AT hyunsikjeong thermaldiffusivityandpoleskippingintheincoherentsemilocallycriticalir |