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THE DECOHERENCE CRITERION [PDF]
Modern Physics Letters B, 2001 The decoherence mechanism signals the limits beyond which the system dynamics approaches the classical behavior. We show that in some cases decoherence may also signal the limits beyond which the system dynamics has to be described by quantum field theory, rather than by quantum mechanics.
ALFINITO, ELEONORA +2 more
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Decoherence in Conformal Field Theory
Journal of High Energy Physics, 2020 Noise sources are ubiquitous in Nature and give rise to a description of quantum systems in terms of stochastic Hamiltonians. Decoherence dominates the noise-averaged dynamics and leads to dephasing and the decay of coherences in the eigenbasis of the ...
Adolfo del Campo, Tadashi Takayanagi
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New Journal of Physics, 2021 We extend the theory of quantum state engineering (QSE) to the open quantum systems which simultaneously suffer time-dependent decoherence and time-independent decoherence.
Qi-Cheng Wu +4 more
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Universality of Decoherence [PDF]
Physical Review Letters, 2001 Physical Review ...
Braun, Daniel A. +2 more
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Optics and Spectroscopy, 2003 Gell-Mann's quarks are coherent particles confined within a hadron at rest, but Feynman's partons are incoherent particles which constitute a hadron moving with a velocity close to that of light. It is widely believed that the quark model and the parton model are two different manifestations of the same covariant entity.
Kim, Y. S., Noz, Marilyn E.
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Microscopic and macroscopic effects in the decoherence of neutrino oscillations
Journal of High Energy Physics, 2022 We present a generic structure (the layer structure) for decoherence effects in neutrino oscillations, which includes decoherence from quantum mechanical and classical uncertainties. The calculation is done by combining the concept of open quantum system
Ting Cheng +2 more
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Coupled Harmonic Oscillator in a System of Free Particles
Mathematics, 2022 The coupled quantum harmonic oscillator is one of the most researched and important model systems in quantum optics and quantum informatics. This system is often investigated for quantum entanglement in the environment.
Dmitry Makarov
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Experimental test of decoherence theory using electron matter waves
New Journal of Physics, 2018 A controlled decoherence environment is studied experimentally by free electron interaction with semiconducting and metallic plates. The results are compared with physical models based on decoherence theory to investigate the quantum-classical transition.
Peter J Beierle +2 more
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Definition of decoherence [PDF]
Physical Review D, 1993 We examine the relationship between the decoherence of quantum-mechanical histories of a closed system (as discussed by Gell-Mann and Hartle) and environmentally induced diagonalization of the density operator for an open system. We study a definition of decoherence which incorporates both of these ideas, and show that it leads to a consistent ...
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Decoherence and the Loschmidt Echo [PDF]
Physical Review Letters, 2003 Environment--induced decoherence causes entropy increase. It can be quantified using, e.g., the purity $ς={\rm Tr}ρ^2$. When the Hamiltonian of a quantum system is perturbed, its sensitivity to such perturbation can be measured by the Loschmidt echo $\bar M(t)$. It is given by the average squared overlap between the perturbed and unperturbed state.
Cucchietti, Fernando .M. +3 more
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