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We show that discrete quasiprobability distributions defined via the discreteHeisenberg-Weyl group can be obtained as discretizations of the continuous SUN quasiprobabilitydistributions. This is done by identifying the phase-point operators with the continuousquantisation kernels evaluated at special points of the phase space. As an application we discussthe positive-P function and show that its discretization can be used to treat the problem of divergingtrajectories. We study the dissipative long-range transverse-field Ising chain and show thatthe long-time dynamics of local observables is well described by a semiclassical approximation ofthe interactions.Nota general

Artículo de publicación ISI

Author: Zunkovic, Bojan; -



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