Zobrazeno 1 - 10
of 97
pro vyhledávání: '"Shir, R."'
Open quantum systems have complex energy eigenvalues which are expected to follow non-Hermitian random matrix statistics when chaotic, or 2-dimensional (2d) Poisson statistics when integrable. We investigate the spectral properties of a many-body qua
Externí odkaz:
http://arxiv.org/abs/2409.10625
There are various definitions of the concept of complexity in Quantum Field Theory as well as for finite quantum systems. For several of them there are conjectured holographic bulk duals. In this work we establish an entry in the AdS/CFT dictionary f
Externí odkaz:
http://arxiv.org/abs/2305.04355
We apply a notion of quantum complexity, called "Krylov complexity", to study the evolution of systems from integrability to chaos. For this purpose we investigate the integrable XXZ spin chain, enriched with an integrability breaking deformation tha
Externí odkaz:
http://arxiv.org/abs/2207.07701
Quantum complexity, suitably defined, has been suggested as an important probe of late-time dynamics of black holes, particularly in the context of AdS/CFT. A notion of quantum complexity can be effectively captured by quantifying the spread of an op
Externí odkaz:
http://arxiv.org/abs/2112.12128
Heisenberg time evolution under a chaotic many-body Hamiltonian $H$ transforms an initially simple operator into an increasingly complex one, as it spreads over Hilbert space. Krylov complexity, or `K-complexity', quantifies this growth with respect
Externí odkaz:
http://arxiv.org/abs/2009.01862
We study operator complexity on various time scales with emphasis on those much larger than the scrambling period. We use, for systems with a large but finite number of degrees of freedom, the notion of K-complexity employed in arXiv:1812.08657 for i
Externí odkaz:
http://arxiv.org/abs/1907.05393
Publikováno v:
Science, 2018 Jan 01. 359(6372), 218-224.
Externí odkaz:
https://www.jstor.org/stable/26401267
Publikováno v:
Cell Reports, Vol 31, Iss 5, Pp - (2020)
Summary: An antagonistic center-surround receptive field is a key feature in sensory processing, but how it contributes to specific computations such as direction selectivity is often unknown. Retinal On-starburst amacrine cells (SACs), which mediate
Externí odkaz:
https://doaj.org/article/07201b11295242b7aa0539998f6b6ac0
Akademický článek
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Publikováno v:
arXiv
Understanding the mechanisms underlying many-body quantum chaos is one of the big challenges in theoretical physics. We tackle this problem by considering a set of perturbed quadratic Sachdev-Ye-Kitaev (SYK) Hamiltonians defined on graphs. This allow
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______1874::55a53cc80cdb8fb56e5976ac591b6969
https://hdl.handle.net/21.11116/0000-000C-8CA2-F21.11116/0000-000C-8CA3-E21.11116/0000-000C-8CA0-1
https://hdl.handle.net/21.11116/0000-000C-8CA2-F21.11116/0000-000C-8CA3-E21.11116/0000-000C-8CA0-1