Results 1 to 10 of about 428,672 (127)
International Journal of Mathematics and Mathematical Sciences, 2002 We investigate an N-state spin model called quantum relativistic Toda chain and based on the unitary finite-dimensional representations of the Weyl algebra with q being Nth primitive root of unity. Parameters of the finite-dimensional representation of
Stanislav Pakuliak, Sergei Sergeev
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Classical spin gravitational Compton scattering
Journal of High Energy Physics, 2023 We introduce a novel bootstrap method for heavy-mass effective field theory classical Compton scattering amplitudes involving two massless particles and two arbitrary-spin infinite-mass limit particles. Using a suitable ansatz, we deduce new and explicit
N. E. J. Bjerrum-Bohr +2 more
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Semi-classical quantisation of magnetic solitons in the anisotropic Heisenberg quantum chain
SciPost Physics, 2021 Using the algebro-geometric approach, we study the structure of semi-classical eigenstates in a weakly-anisotropic quantum Heisenberg spin chain. We outline how classical nonlinear spin waves governed by the anisotropic Landau-Lifshitz equation arise ...
Yuan Miao, Enej Ilievski, Oleksandr Gamayun
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Classical potential for general spinning bodies
Journal of High Energy Physics, 2020 In this paper we compute the spin-dependent terms of the gravitational potential for general spinning bodies at the leading Newton’s constant G and to all orders in spin.
Ming-Zhi Chung +2 more
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Numerical simulations of a spin dynamics model based on a path integral approach
Physical Review Research, 2023 Inspired by path integral molecular dynamics, we build a spin model, in terms of spin coherent states, from which we can compute the quantum expectation values of a spin in a constant magnetic field, at finite temperature.
Thomas Nussle +2 more
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Spatiotemporal dynamics of classical and quantum density profiles in low-dimensional spin systems
Physical Review Research, 2022 We provide a detailed comparison between the dynamics of high-temperature spatiotemporal correlation functions in quantum and classical spin models.
Tjark Heitmann +5 more
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Relativistic dissipative spin dynamics in the relaxation time approximation
Physics Letters B, 2021 The concept of the Wigner function is used to construct a semi-classical kinetic theory describing the evolution of the axial current phase-space density of spin-12 particles in the relaxation time approximation.
Samapan Bhadury +4 more
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Classical gravitational spin-spin interaction [PDF]
, 2002 I obtain an exact, axially symmetric, stationary solution of Einstein's equations for two massless spinning particles. The term representing the spin-spin interaction agrees with recently published approximate work.
Antoci S +11 more
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Classical observables from coherent-spin amplitudes
Journal of High Energy Physics, 2021 The quantum field-theoretic approach to classical observables due to Kosower, Maybee and O’Connell provides a rigorous pathway from on-shell scattering amplitudes to classical perturbation theory.
Rafael Aoude, Alexander Ochirov
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Quantum Brownian motion for magnets
New Journal of Physics, 2022 Spin precession in magnetic materials is commonly modelled with the classical phenomenological Landau–Lifshitz–Gilbert (LLG) equation. Based on a quantized three-dimensional spin + environment Hamiltonian, we here derive a spin operator equation of ...
J Anders, C R J Sait, S A R Horsley
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