Zobrazeno 1 - 10
of 192
pro vyhledávání: '"Zhang, Jiaju"'
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 in time. Traditional approaches often rely on specific local operator
Externí odkaz:
http://arxiv.org/abs/2410.17798
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 many-body systems. We then use these values to assess the entanglement c
Externí odkaz:
http://arxiv.org/abs/2310.16503
Autor:
Guo, Wu-zhong, Zhang, Jiaju
Publikováno v:
Phys. Rev. D 109, 106008(2024)
By generalizing the density matrix to a transition matrix between two states, represented as $|\phi\rangle$ and $|\psi\rangle$, one can define the pseudoentropy analogous to the entanglement entropy. In this paper, we establish an operator sum rule t
Externí odkaz:
http://arxiv.org/abs/2308.05261
Autor:
Ye, Wentao, Zhang, Jiaju
Publikováno v:
J.Phys.A 57 (2024) 38, 385001
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 fermionic chains and the ferromagnetic phase of the spin-1/2 XXX chain
Externí odkaz:
http://arxiv.org/abs/2303.14132
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 an open question. In this work, we introduce an alternative indicator
Externí odkaz:
http://arxiv.org/abs/2301.13218
Autor:
Zhang, Jiaju, Rajabpour, M. A.
Publikováno v:
Phys. Rev. A 108 (2023) 2, 022414
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, characterized by their correlation matrices, we consider the von Neumann entro
Externí odkaz:
http://arxiv.org/abs/2210.11865
Autor:
Zhang, Jiaju, Rajabpour, M. A.
Publikováno v:
JHEP 07 (2022) 119
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 bosonic chains and the ferromagnetic phase of the spin-1/2 XXX chain. The
Externí odkaz:
http://arxiv.org/abs/2202.11448
Publikováno v:
In Materials Characterization September 2024 215
Autor:
Zhang, Jiaju, Rajabpour, M. A.
Publikováno v:
JHEP 02 (2022) 072
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 number of excited magnons with respect to the size of the system is s
Externí odkaz:
http://arxiv.org/abs/2109.12826
Autor:
Xie, Jinye, Xing, Shan, Jiang, Hongbo, Zhang, Jiaju, Li, Daxiao, Niu, Shiqiong, Huang, Zhijian, Yin, Haofan
Publikováno v:
In iScience 19 April 2024 27(4)