From the 1 of 7 linked papers with an AI index.
7 papers
Single-eigenstate test of eigenstate thermalization hypothesis via perturbed eigenstate quench
Zhouhao Guo, Jiaju Zhang
We propose and numerically validate an efficient single-eigenstate diagnostic for the eigenstate thermalization hypothesis (ETH) based on a perturbed eigenstate quench protocol. By…
Discrete power-law decay of subsystem distance after a quantum quench
Bin Sui, Jiaju Zhang
The paper numerically investigates the decay of the Bures distance between a subsystem’s reduced density matrix and its stationary generalized Gibbs ensemble after a global quench…
Efficient computation of average subsystem Bures distance between fermionic Gaussian states
Zhouhao Guo, M. A. Rajabpour, Jiaju Zhang
The average subsystem trace distance has been proposed as an indicator of quantum many-body chaos and integrability. However, evaluating it presents two main difficulties: high com…
Additivity of disjoint interval entanglement in quasiparticle excited states
Zhouhao Guo, Jiaju Zhang
We investigate mixed-state entanglement measures, namely reflected entropy, mutual information and logarithmic negativity, for two disjoint intervals in one-dimensional systems exc…
Volume-law entanglement fragmentation of quasiparticles
Jiaju Zhang
We investigate the entanglement entropy in quantum states featuring repeated sequential excitations of unit patterns in momentum space. In the scaling limit, each unit pattern cont…
Bootstrapping entanglement in quantum spin systems
Jiaju Zhang, Arash Jafarizadeh, M. A. Rajabpour
In this paper, we employ the bootstrap method, a technique that relies on consistency relations instead of direct diagonalization, to determine the expectation values in quantum ma…