Zobrazeno 1 - 10
of 877
pro vyhledávání: '"Cao, Xiangyu"'
We put forward a Monte Carlo algorithm which samples the Euclidean time operator growth dynamics at infinite temperature. Crucially, our approach is free of the numerical sign problem for a range of quantum many-body spin systems, allowing for numeri
Externí odkaz:
http://arxiv.org/abs/2401.06215
Autor:
Ferté, Benoît, Cao, Xiangyu
Publikováno v:
Phys. Rev. A 109, 032226 (2024)
Quantum Darwinism (QD) proposes that classical objectivity emerges from the broadcast of information about a microscopic degree of freedom into multiple fractions of a many-body environment. Such a broadcast of information is in sharp contrast with i
Externí odkaz:
http://arxiv.org/abs/2312.04284
Autor:
Ferté, Benoît, Cao, Xiangyu
Publikováno v:
Phys. Rev. Lett. 132, 110201 (2024)
We propose a solvable model of Quantum Darwinism to encoding transitions -- abrupt changes in how quantum information spreads in a many-body system under unitary dynamics. We consider a random Clifford circuit on an expanding tree, whose input qubit
Externí odkaz:
http://arxiv.org/abs/2305.03694
Publikováno v:
Phys Rev B, 108, 054301 (2023)
The quantum dynamics of spin systems with uniform all-to-all interaction are often studied in the totally symmetric space (TSS) of maximal total spin. However the TSS states are atypical in the full many-body Hilbert space. In this work, we explore s
Externí odkaz:
http://arxiv.org/abs/2304.11138
Publikováno v:
JHEP (2023) 061
The path integral of Liouville theory is well understood only when the central charge $c\in [25, \infty)$. Here, we study the analytical continuation the lattice Liouville path integral to generic values of $c$, with a particular focus on the vicinit
Externí odkaz:
http://arxiv.org/abs/2301.07454
Publikováno v:
JHEP 03 (2023) 054
We study the operator growth in open quantum systems with dephasing dissipation terms, extending the Krylov complexity formalism of Phys. Rev. X 9, 041017. Our results are based on the study of the dissipative $q$-body Sachdev-Ye-Kitaev (SYK$_q$) mod
Externí odkaz:
http://arxiv.org/abs/2212.06180
Publikováno v:
J. Phys. A: Math. Theor. 56 115002 (2023)
Brownian particles that are replicated and annihilated at equal rate have strongly correlated positions, forming a few compact clusters separated by large gaps. We characterize the distribution of the particles at a given time, using a definition of
Externí odkaz:
http://arxiv.org/abs/2209.10822
Publikováno v:
Phys. Rev. Lett. 129, 108301 (2022)
In presence of long range dispersal, epidemics spread in spatially disconnected regions known as clusters. Here, we characterize exactly their statistical properties in a solvable model, in both the supercritical (outbreak) and critical regimes. We i
Externí odkaz:
http://arxiv.org/abs/2203.14663
Publikováno v:
JHEP 05 (2022) 174
In semi-classical systems, the exponential growth of the out-of-timeorder correlator (OTOC) is believed to be the hallmark of quantum chaos. However,on several occasions, it has been argued that, even in integrable systems, OTOC can grow exponentiall
Externí odkaz:
http://arxiv.org/abs/2203.03534
Autor:
Guan, Xindi, Li, Ping, Zhang, Jikai, Chang, Qingqing, Xiong, Jiachun, Han, Yunwu, Zhang, Hailin, Li, Qian, Zhang, Linlin, Cao, Xiangyu, Wang, Huijia, Yang, Youming, Xie, Haijiao, Zheng, Shili
Publikováno v:
In Separation and Purification Technology 20 September 2024 344