Results 41 to 50 of about 663,196 (288)
Discrimination between evolution operators
Physical Review A, 2007 Under broad conditions, evolutions due to two different Hamiltonians are shown to lead at some moment to orthogonal states. For two spin-1/2 systems subject to precession by different magnetic fields the achievement of orthogonalization is demonstrated for every scenario but a special one.
Vértesi, T., Englman, R.
openaire +2 more sources
On operator growth and emergent Poincaré symmetries
Journal of High Energy Physics, 2020 We consider operator growth for generic large-N gauge theories at finite temperature. Our analysis is performed in terms of Fourier modes, which do not mix with other operators as time evolves, and whose correlation functions are determined by their two ...
Javier M. Magán, Joan Simón
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Physical Review Research, 2022 We develop a geometric approach to operator growth and Krylov complexity in many-body quantum systems governed by symmetries. We start by showing a direct link between a unitary evolution with the Liouvillian and the displacement operator of appropriate ...
Pawel Caputa +2 more
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Multipartite entanglement evolution under separable operations [PDF]
Physical Review A, 2012 Replaced by the published version, comments are welcome!
Gheorghiu, Vlad, Gour, Gilad
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, 1993 A new expansion scheme to evaluate the eigenvalues of the generalized evolution operator (Frobenius-Perron operator) $H_{q}$ relevant to the fluctuation spectrum and poles of the order-$q$ power spectrum is proposed.
B. Eckhardt +30 more
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On the low-x NLO evolution of 4 point colorless operators [PDF]
, 2015 The NLO evolution equations for quadrupole and double dipole operators have been obtained within the high energy operator expansion method.
Grabovsky, A. V.
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Local operator entanglement in spin chains
SciPost Physics Core, 2023 Understanding how and whether local perturbations can affect the entire quantum system is a fundamental step in understanding non-equilibrium phenomena such as thermalization.
Eric Mascot, Masahiro Nozaki, Masaki Tezuka
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Parametric oscillator in a Kerr medium: evolution of coherent states
, 2015 We study the temporal evolution of a coherent state under the action of a parametric oscillator and a nonlinear Kerr-like medium. We make use of the interaction picture representation and use an exact time evolution operator for the time independent part
Berrondo, M. +2 more
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Remarks on the operator-norm convergence of the Trotter product formula [PDF]
, 2017 We revise the operator-norm convergence of the Trotter product formula for a pair {A,B} of generators of semigroups on a Banach space. Operator-norm convergence holds true if the dominating operator A generates a holomorphic contraction semigroup and B ...
Neidhardt, Hagen +2 more
core +2 more sources
Time evolution after double trace deformation
Journal of High Energy Physics, 2018 In this paper, we consider double trace deformation to single CFT2, and study time evolution after the deformation. The double trace deformation we consider is nonlocal: composed of two local operators placed at separate points.
Masamichi Miyaji
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