Thermalization in different phases of charged SYK model
| Autor: | Nilakash Sorokhaibam, Tousik Samui |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
High Energy Physics - Theory
Physics Nuclear and High Energy Physics Statistical Mechanics (cond-mat.stat-mech) Field Theories in Lower Dimensions FOS: Physical sciences Syk QC770-798 Effective temperature Holography and condensed matter physics (AdS/CMT) Liquid state Thermalisation High Energy Physics - Theory (hep-th) Settling Exponential growth Nuclear and particle physics. Atomic energy. Radioactivity Phase (matter) Low temperature combustion Integrable Field Theories Atomic physics Condensed Matter - Statistical Mechanics |
| Zdroj: | Journal of High Energy Physics Journal of High Energy Physics, Vol 2021, Iss 4, Pp 1-26 (2021) |
| ISSN: | 1029-8479 |
| Popis: | We study thermalization of charged SYK model in two different phases. We show that both the highly chaotic liquid phase and the dilute gas phase thermalize. Surprisingly the dilute gas state thermalizes instantaneously. We argue that this phenomenon arises because the system in this phase consists of only long-lived quasi-particles at very low density. The liquid state thermalizes exponentially fast. We also show that the additional introduction of random mass deformation (q=2 SYK term) slows down thermalization but the system thermalizes exponentially fast. This is observed despite the fact that the addition of large q=2 SYK interaction forces spectral statistics to obey Poisson statistics. An interesting new observation is that the effective temperature is non-monotonic during thermalization in the liquid state. It has a bump at relatively long time before settling down to the final value. With non-zero chemical potential, the effective temperature oscillates noticeably before settling down to the final value. Published version with minor changes and corrections |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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