Post-quench relaxation dynamics of Gross-Neveu lattice fermions
- URL: http://arxiv.org/abs/2511.02618v1
- Date: Tue, 04 Nov 2025 14:46:50 GMT
- Title: Post-quench relaxation dynamics of Gross-Neveu lattice fermions
- Authors: Domenico Giuliano, Reinhold Egger, Bidyut Dey, Andrea Nava,
- Abstract summary: We numerically describe the system dynamics through a time-dependent self-consistent Lindblad master equation.<n>Our findings highlight subtle yet important aspects of the post-quench relaxation dynamics of quantum many-body systems.
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- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: We study the quantum relaxation dynamics for a lattice version of the one-dimensional (1D) $N$-flavor Gross-Neveu (GN) model after a Hamiltonian parameter quench. Allowing for a system-reservoir coupling $\gamma$, we numerically describe the system dynamics through a time-dependent self-consistent Lindblad master equation. For a closed ($\gamma=0$) finite-size system subjected to an interaction parameter quench, the order parameter dynamics exhibits oscillations and revivals. In the thermodynamic limit, our results imply that the order parameter reaches its post-quench stationary value in accordance with the eigenstate thermalization hypothesis (ETH). However, time-dependent finite-momentum correlation matrix elements equilibrate only if $\gamma>0$. Our findings highlight subtle yet important aspects of the post-quench relaxation dynamics of quantum many-body systems.
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