Results 31 to 40 of about 428,741 (193)

NONRELATIVISTIC CLASSICAL MECHANICS FOR SPINNING PARTICLES [PDF]

International Journal of Modern Physics A, 2005
We study the classical dynamics of nonrelativistic particles endowed with spin. Nonvanishing Zitterbewegung terms appear in the equation of motion also in the small momentum limit. We derive a generalized work-energy theorem which suggests classical interpretations for tunnel effect and quantum potential.
openaire   +3 more sources

The Fine-Structure Constant in the Bivector Standard Model

Axioms
The geometrical view of the electron as a spinning bivector leads to the partitioning of the electron’s energy into internal and external. The reduced Compton wavelength, λ¯C, is taken as the radius of the inertial ring (a disc), while re characterizes ...
Bryan Sanctuary
doaj   +1 more source

Non-equilibrium effects in a Josephson junction coupled to a precessing spin

, 2010
We present a theoretical study of a Josephson junction consisting of two s-wave superconducting leads coupled over a classical spin. When an external magnetic field is applied, the classical spin will precess with the Larmor frequency.
A. I. Buzdin, A. I. Buzdin, A. I. Larkin, A. I. Larkin, A. L. Shelankov, A. V. Zaitsev, A. V. Zaitsev, C. Holmqvist, D. Vollhardt, G. M. Eliashberg, G. M. Eliashberg, I. O. Kulik, I. O. Kulik, I. O. Kulik, I. O. Kulik, L. D. Landau, L. D. Landau, L. D. Landau, L. N. Bulaevskii, L. N. Bulaevskii, M. Fogelström, M. Y. Kuprianov, M. Y. Kuprianov, S. Sanvito, S. Teber, V. L. Berezinskii, V. L. Berezinskii   +26 more
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The Zitterbewegung in the Bivector Standard Model

Axioms
We show that the Zitterbewegung of the electron arises as a real internal motion when spin is treated as a classical bivector rather than as a point fermion of the Dirac equation.
Bryan Sanctuary
doaj   +1 more source

Quantum phase transition in the Dicke model with critical and non-critical entanglement

, 2012
We study the quantum phase transition of the Dicke model in the classical oscillator limit, where it occurs already for finite spin length. In contrast to the classical spin limit, for which spin-oscillator entanglement diverges at the transition ...
A. Alvermann, A. Messiah, H. Fehske, I. G. Lang, I. G. Lang, L. Bakemeier, M. A. Nielsen, S. Sachdev   +7 more
core   +1 more source

Classical limit of higher-spin string amplitudes

Journal of High Energy Physics, 2023
It has been shown that a special set of three-point amplitudes between two massive spinning states and a graviton reproduces the linearised stress-energy tensor for a Kerr black hole in the classical limit. In this work we revisit this result and compare
Lucile Cangemi, Paolo Pichini
doaj   +1 more source

Discrete breathers in classical spin lattices [PDF]

Physical Review B, 2001
15 pages, 12 ...
Zolotaryuk, Y., Flach, S., Fleurov, V.
openaire   +3 more sources

Analyses of the transmission of the disorder from a disturbed environment to a spin chain

, 2014
We study spin chains submitted to disturbed kick trains described by classical dynamical processes. The spin chains are described by Heisenberg and Ising models.
Aubourg, Lucile, Viennot, David
core   +2 more sources

Storage of classical information in quantum spins [PDF]

, 2011
Digital magnetic recording is based on the storage of a bit of information in the orientation of a magnetic system with two stable ground states. Here we address two fundamental problems that arise when this is done on a quantized spin: quantum spin ...
C. Cohen-Tannoudji, D. Gatteschi, F. Delgado, H. A. Kramers, J. Fernández-Rossier   +4 more
core   +3 more sources

Longitudinal integration measure in classical spin space and its application to first-principle based simulations of the high temperature magnetism of Fe and Ni

, 2018
The classical Heisenberg type spin Hamiltonian is widely used for simulations of finite temperature properties of magnetic metals often using parameters derived from first principles calculations.
Khmelevskyi, Sergii
core   +2 more sources