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Dynamics of angular momentum coupling in an arbitrarily directed magnetic field

Brieger, M. (2000) Dynamics of angular momentum coupling in an arbitrarily directed magnetic field. DPG-Frühjahrstagung, Bonn, 03. - 07.04.2000.

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The choice of an axis of quantization automatically selects those species from a bulk which could become stationary in a field-free environment with related spatial orientations of their coupling angular momenta. But if this axis fails to coincide with the direction of a uniform external magnetic field, a field-imposed transverse torque forces these atoms' total angular momenta into steady nutation that cannot be abolished by coupling-related internal torques. Making any stationary state impossible for these atoms, it also causes the contributions to the energy expectation value to oscillate. This is the result of a rigorous solution to the time-dependent Schrödinger equation describing the coupling dynamics of two spins 1/2 in an external field. Demanding to solve a four-dimensional system of coupled linear differential equations of first order, the bulkiness of even this simplest case already brings the calculations to the verge of becoming infeasible analytically.

Document Type:Conference or Workshop Item (Speech)
Additional Information: LIDO-Berichtsjahr=2001,
Title:Dynamics of angular momentum coupling in an arbitrarily directed magnetic field
AuthorsInstitution or Email of Authors
Page Range:p. 935
Event Title:DPG-Frühjahrstagung, Bonn, 03. - 07.04.2000
Organizer:Deutsche Physikalische Gesellschaft
HGF - Research field:Energy
HGF - Program:Aeronautics
HGF - Program Themes:other
DLR - Research area:Energy
DLR - Program:L - no assignement
DLR - Research theme (Project):L - Laser Research and Technology
Location: Stuttgart
Institutes and Institutions:Institute of Technical Physics
Deposited By: elib DLR-Beauftragter
Deposited On:16 Sep 2005
Last Modified:06 Jan 2010 14:40

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