Time evolution of a single spin inhomogeneously coupled to an interacting spin environment

2006 ◽  
Vol 124 (14) ◽  
pp. 144513 ◽  
Author(s):  
Zhen Huang ◽  
Gehad Sadiek ◽  
Sabre Kais
Keyword(s):  
Time Evolution ◽  
Single Spin

Time evolution, relaxation function, and random force for a single-spin model via the method of Mori

1983 ◽  
Vol 61 (3) ◽  
pp. 428-433 ◽  
Author(s):  
M. Howard Lee
Keyword(s):  
Time Evolution ◽  
Relaxation Function ◽  
Memory Function ◽  
Random Force ◽  
Spin Model ◽  
Time Dependent ◽  
Quantum Mechanical ◽  
Single Spin ◽  
Dependent Behavior ◽  
Insight Into

We introduce a single-spin model defined by the Hamiltonian H = aSz + bSx, where a and b are constants and Sx and Sz are the x- and z-components of the spin [Formula: see text] operator. We obtain for this model the time-dependent behavior exactly and completely via the method of Mori. To gain an insight into the quantum mechanical mechanisms of time evolution, we make a comparison with Brownian motion by deducing a number of Brownian analogs. Brownian analogs include the spin memory function as well as the random force and its power spectrum.

A COMPARISON BETWEEN ZIRCON-RUTILE THERMOMETRY OF ECLOGITES: IMPLICATIONS FOR TEMPERATURE-TIME EVOLUTION OF THE NORTH QAIDAM UHP TERRANE, CHINA

2017 ◽  
Author(s):  
David Hernández-Uribe ◽  
◽  
Chris G. Mattinson ◽  
Owen K. Neill ◽  
Andrew Kylander-Clark ◽  
...  
Keyword(s):  
Time Evolution ◽  
The North ◽  
North Qaidam ◽  
Temperature Time

Historical Background

2018 ◽  
Author(s):  
Klaus Morawetz
Keyword(s):  
Steady State ◽  
Kinetic Theory ◽  
Time Evolution ◽  
Historical Development ◽  
Historical Background ◽  
Quantum Kinetic Theory ◽  
Dense Gases ◽  
Nonequilibrium Phenomena ◽  
Quantum Liquids ◽  
Nonlocal Quantum

The historical development of kinetic theory is reviewed with respect to the inclusion of virial corrections. Here the theory of dense gases differs from quantum liquids. While the first one leads to Enskog-type of corrections to the kinetic theory, the latter ones are described by quasiparticle concepts of Landau-type theories. A unifying kinetic theory is envisaged by the nonlocal quantum kinetic theory. Nonequilibrium phenomena are the essential processes which occur in nature. Any evolution is built up of involved causal networks which may render a new state of quality in the course of time evolution. The steady state or equilibrium is rather the exception in nature, if not a theoretical abstraction at all.

scholarly journals Measurement of the beam-normal single-spin asymmetry for elastic electron scattering from C12 and Al27

2021 ◽  
Vol 104 (1) ◽  
Author(s):  
D. Androić ◽  
D. S. Armstrong ◽  
A. Asaturyan ◽  
K. Bartlett ◽  
R. S. Beminiwattha ◽  
...  
Keyword(s):  
Electron Scattering ◽  
Spin Asymmetry ◽  
Single Spin Asymmetry ◽  
Elastic Electron ◽  
Elastic Electron Scattering ◽  
Single Spin
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