22 citations · 178 across the 20 of their papers we have counts for
20 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
We present a numerical study of subsystem distance decay following a global quantum quench in the infinite one-dimensional transverse-field Ising chain, using the mathematically ri…
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…
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…
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…
Subsystem Evolution Speed as Indicator of Relaxation
Jiaju Zhang, M. A. Rajabpour, Markus Heyl +1
In studying the time evolution of isolated many-body quantum systems, a key focus is determining whether the system undergoes relaxation and reaches a steady state at a given point…
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…
Sum rule for the pseudo-Rényi entropy
Wu-zhong Guo, Jiaju Zhang
By generalizing the density matrix to a transition matrix between two states, represented as and , one can define the pseudoentropy analogous to the entangle…
Shannon entropy in quasiparticle states of quantum chains
Wentao Ye, Jiaju Zhang
We investigate the Shannon entropy of the total system and its subsystems, as well as the subsystem Shannon mutual information, in quasiparticle excited states of free bosonic and…
Identifying quantum many-body integrability and chaos using eigenstates trace distances
Reyhaneh Khasseh, Jiaju Zhang, Markus Heyl +1
While the concepts of quantum many-body integrability and chaos are of fundamental importance for the understanding of quantum matter, their precise definition has so far remained…
Trace distance between fermionic Gaussian states from a truncation method
Jiaju Zhang, M. A. Rajabpour
In this paper, we propose a novel truncation method for determining the trace distance between two Gaussian states in fermionic systems. For two fermionic Gaussian states, characte…
Subsystem distances between quasiparticle excited states
Jiaju Zhang, M. A. Rajabpour
We investigate the subsystem Schatten distance, trace distance and fidelity between the quasiparticle excited states of the free and the nearest-neighbor coupled fermionic and boso…
Entanglement of magnon excitations in spin chains
Jiaju Zhang, M. A. Rajabpour
We calculate exactly the entanglement content of magnon excited states in the integrable spin-1/2 XXX and XXZ chains in the scaling limit. In particular, we show that as far as the…
Excited state Rényi entropy and subsystem distance in two-dimensional non-compact bosonic theory. Part II. Multi-particle states
Jiaju Zhang, M. A. Rajabpour
We study the excited state Rényi entropy and subsystem Schatten distance in the two-dimensional free massless non-compact bosonic field theory, which is a conformal field theory. T…
Corrections to universal Rényi entropy in quasiparticle excited states of quantum chains
Jiaju Zhang, M. A. Rajabpour
We investigate the energy eigenstate Rényi entropy of generic bipartition in the fermionic, bosonic, and spin-1/2 XY chains. When the gap of the theory is large or all the momenta…
Universal Rényi Entropy of Quasiparticle Excitations
Jiaju Zhang, M. A. Rajabpour
The Rényi entropies of quasiparticle excitations in the many-body gapped systems show a remarkable universal picture which can be understood partially by combination of a semiclass…
Excited state Rényi entropy and subsystem distance in two-dimensional non-compact bosonic theory -- I. Single-particle states
Jiaju Zhang, M. A. Rajabpour
We investigate the Rényi entropy of the excited states produced by the current and its derivatives in the two-dimensional free massless non-compact bosonic theory, which is a two-d…
Subsystem distance after a local operator quench
Jiaju Zhang, Pasquale Calabrese
We investigate the time evolution of the subsystem trace distance and Schatten distances after local operator quenches in two-dimensional conformal field theory (CFT) and in one-di…
BPS Wilson loops in superconformal Chern-Simons-matter theories
Andrea Mauri, Hao Ouyang, Silvia Penati +2
In superconformal Chern-Simons-matter theories we construct the infinite family of Bogomol'nyi-Prasad-Sommerfield (BPS) Wilson loops featured by constant parame…
Exact results for Wilson loops in orbifold ABJM theory
Hao Ouyang, Jun-Bao Wu, Jia-ju Zhang
We investigate the exact results for circular 1/4 and 1/2 BPS Wilson loops in the super Chern-Simons-matter theory that could be obtained by orbifolding Ahar…