Results 21 to 30 of about 428,741 (193)
Classicality of spin states [PDF]
Physical Review A, 2008 We extend the concept of classicality in quantum optics to spin states. We call a state ``classical'' if its density matrix can be decomposed as a weighted sum of angular momentum coherent states with positive weights. Classical spin states form a convex set C, which we fully characterize for a spin-1/2 and a spin-1.
Giraud, Olivier +2 more
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Extreme Quantum Advantage when Simulating Classical Systems with Long-Range Interaction
Scientific Reports, 2017 Classical stochastic processes can be generated by quantum simulators instead of the more standard classical ones, such as hidden Markov models. One reason for using quantum simulators has recently come to the fore: they generally require less memory ...
Cina Aghamohammadi +2 more
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Evolution of Spin-Orbital Entanglement with Increasing Ising Spin-Orbit Coupling
Condensed Matter, 2020 Several realistic spin-orbital models for transition metal oxides go beyond the classical expectations and could be understood only by employing the quantum entanglement.
Dorota Gotfryd +3 more
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Quantum spin dynamics in external classical fields [PDF]
EPJ Web of Conferences, 2019 We study the quantum and classical dynamics of spinning particles in the framework of the general-relativistic covariant Dirac theory. The exact Foldy-Wouthuysen transformation for the most general case of a fermion in arbitrary configurations of the ...
Obukhov Yuri N. +2 more
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On classical models of Spin [PDF]
Foundations of Physics Letters, 1992 The reason for recalling this old paper is the ongoing discussion on the attempts of circumventing certain assumptions leading to the Bell theorem (Hess-Philipp, Accardi). If I correctly understand the intentions of these Authors, the idea is to make use of the following logical loophole inherent in the proof of the Bell theorem: Probabilities of ...
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Absolutely classical spin states [PDF]
Physical Review A, 2017 6 pages, 1 ...
Bohnet-Waldraff, F. +2 more
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Spin Waves in a Classical Compressible Heisenberg Chain [PDF]
, 1980 The effect of the spin—lattice interaction on the spin dynamics of a classical Heisenberg chain is studied by means of a truncated continued fraction.
Fivez, J.,, Raedt, H. De,
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Coulomb Problem for Classical Spinning Particles
Universe, 2023 We consider the motion of a weakly relativistic charged particle with an arbitrary spin in central potential e/r in terms of classical mechanics. We show that the spin–orbital interaction causes the precession of the plane of orbit around the vector of total angular momentum.
Dmitry S. Kaparulin +1 more
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The Classical Origin of Spin: Vectors Versus Bivectors
AxiomsThere are two ways of linearizing the Klein–Gordon equation: Dirac’s choice, which introduces a matter–antimatter pair, and a second approach using a bivector, which Dirac did not consider.
Bryan Sanctuary
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Anatomy of a Spin: The Information-Theoretic Structure of Classical Spin Systems
Entropy, 2017 Collective organization in matter plays a significant role in its expressed physical properties. Typically, it is detected via an order parameter, appropriately defined for each given system’s observed emergent patterns.
Vikram S. Vijayaraghavan +2 more
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