Results 21 to 30 of about 3,349 (249)
Physical Review Research, 2021 The fermion sign problem, when severe, prevents the computation of physical quantities of a system of interacting fermions via stochastic evaluation of its path integral.
Andrei Kryjevski +2 more
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Chaotic states and stochastic integration in quantum systems [PDF]
Russian Mathematical Surveys, 1992 Quantum chaotic states over a noncommutative monoid, a unitalization of a noncommutative Ito algebra parametrizing a quantum stochastic Levy process, are described in terms of their infinitely divisible generating functionals over the monoid-valued processes on an atomless `space-time' set.
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Series of iterated quantum stochastic integrals [PDF]
, 2000 We consider series of iterated non-commutative stochastic integrals of scalar operators on the boson Fock space. We give a sufficient condition for these series to converge and to define a reasonable operator. An application of this criterion gives a condition for the convergence of some formal series of generalized integrator processes such as ...
Stéphane Attal, Robin L. Hudson
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(Non) equilibrium dynamics: a (broken) symmetry of the Keldysh generating functional
SciPost Physics, 2018 We unveil the universal (model-independent) symmetry satisfied by Schwinger-Keldysh quantum field theories whenever they describe equilibrium dynamics.
Camille Aron, Giulio Biroli, Leticia F. Cugliandolo
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Stable solvers for real-time Complex Langevin
Journal of High Energy Physics, 2021 This study explores the potential of modern implicit solvers for stochastic partial differential equations in the simulation of real-time complex Langevin dynamics.
Daniel Alvestad +2 more
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Physics Letters B, 2021 We report on a novel phenomenon of particle cosmology, which features specific cosmological phase transitions via quantum tunnelings through multiple vacua.
Zihan Zhou +5 more
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Modelling intermittent anomalous diffusion with switching fractional Brownian motion
New Journal of Physics, 2023 The stochastic trajectories of molecules in living cells, as well as the dynamics in many other complex systems, often exhibit memory in their path over long periods of time.
Michał Balcerek +4 more
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The Stochastic-Quantum Correspondence
Philosophy of PhysicsThis paper argues that every quantum system can be understood as a sufficiently general kind of stochastic process unfolding in an old-fashioned configuration space according to ordinary notions of probability.
Jacob A. Barandes
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Ramsey interferometry of non-Hermitian quantum impurities
Physical Review Research, 2020 We introduce a Ramsey pulse scheme which extracts the non-Hermitian Hamiltonian associated with an arbitrary Lindblad dynamics. We propose a related protocol to measure via interferometry a generalized Loschmidt echo of a generic state evolving in time ...
F. Tonielli +3 more
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A Galerkin FEM for Riesz space-fractional CNLS
Advances in Difference Equations, 2019 In quantum physics, fractional Schrödinger equation is of particular interest in the research of particles on stochastic fields modeled by the Lévy processes, which was derived by extending the Feynman path integral over the Brownian paths to a path ...
Xiaogang Zhu +4 more
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