Thermalization in different phases of charged SYK model
arXiv:2004.14376 · doi:10.1007/JHEP04(2021)157
Abstract
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.
arXiv commentPublished version with minor changes and corrections
References in corpus (32)
- Nonequilibrium dynamics of closed interacting quantum systems
- Probing many-body dynamics on a 51-atom quantum simulator
- Many body localization and thermalization in quantum statistical mechanics
- A bound on chaos
- Gapless Spin-Fluid Ground State in a Random Quantum Heisenberg Magnet
- Comments on the Sachdev-Ye-Kitaev model
- Many-body localization, thermalization, and entanglement
- The many-body localization phase transition
- Equilibration, thermalisation, and the emergence of statistical mechanics in closed quantum systems
- Quantum many-body scars
- Many-body localization: an introduction and selected topics
- Quantum Simulators: Architectures and Opportunities
- Quantum scarred eigenstates in a Rydberg atom chain: entanglement, breakdown of thermalization, and stability to perturbations
- Periodic orbits, entanglement and quantum many-body scars in constrained models: matrix product state approach
- Exact Quantum Many-Body Scar States in the Rydberg-Blockaded Atom Chain
- Holographic Thermalization
- Signatures of integrability in the dynamics of Rydberg-blockaded chains
- Weak Field Black Hole Formation in Asymptotically AdS Spacetimes
- Pre-thermalization in a non-integrable quantum spin chain after a quench
- Quench Dynamics in a Model with Tuneable Integrability Breaking
- Quantum quench of the Sachdev-Ye-Kitaev Model
- Chaotic-Integrable Transition in the Sachdev-Ye-Kitaev Model
- Notes on Melonic Tensor Models
- Phase Diagram of Planar Matrix Quantum Mechanics, Tensor, and Sachdev-Ye-Kitaev Models
- Asymptotic Prethermalization in Periodically Driven Classical Spin Chains
- Out-of-time-order correlator in coupled harmonic oscillators
- SYK Model, Chaos and Conserved Charge
- Quantum Quenches and Thermalization in SYK models
- Quench, thermalization and residual entropy across a non-Fermi liquid to Fermi liquid transition
- Phase transition and chaos in charged SYK model
- Gravitational collapse in SYK models and Choptuik-like phenomenon
- Late Time Quantum Chaos of pure states in the SYK model
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- Sachdev-Ye-Kitaev Models and Beyond: A Window into Non-Fermi Liquids
- Universal equilibration dynamics of the Sachdev-Ye-Kitaev model
- Thermalization of Randomly Coupled SYK Models
- Thermalization and non-monotonic entanglement growth in an exactly solvable model
- Universal non-equilibrium dynamics of pure states and density-dependent thermalization in Sachdev-Ye-Kitaev model
- Dissipation- versus Chaos-Induced Relaxation in Non-Markovian Quantum Many-Body Systems
- Near-Equilibrium Approach to Transport in Complex Sachdev-Ye-Kitaev Models