Details
| Original language | English |
|---|---|
| Pages (from-to) | 1203-1204 |
| Number of pages | 2 |
| Journal | Journal of Magnetism and Magnetic Materials |
| Volume | 54-57 |
| Issue number | PART 3 |
| Publication status | Published - Feb 1986 |
Abstract
We investigate the dynamics of one anisotropic spin in an external time-dependent magnetic field. Results on this model, which is classically chaotic, are presented for a quantum spin, in particular for S≫1. Quantum unpredictability dominates in regular regions of phase space; in irregular regions of phase space we find classical stochasticity governed by a S-dependent Lyapunov exponent as long as t<T0, where T0 ∼ log S.
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Condensed Matter Physics
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In: Journal of Magnetism and Magnetic Materials, Vol. 54-57, No. PART 3, 02.1986, p. 1203-1204.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Classical stochasticity and quantum uncertainty in a simple quantum spin model
AU - Frahm, H.
AU - Mikeska, H. J.
PY - 1986/2
Y1 - 1986/2
N2 - We investigate the dynamics of one anisotropic spin in an external time-dependent magnetic field. Results on this model, which is classically chaotic, are presented for a quantum spin, in particular for S≫1. Quantum unpredictability dominates in regular regions of phase space; in irregular regions of phase space we find classical stochasticity governed by a S-dependent Lyapunov exponent as long as t0, where T0 ∼ log S.
AB - We investigate the dynamics of one anisotropic spin in an external time-dependent magnetic field. Results on this model, which is classically chaotic, are presented for a quantum spin, in particular for S≫1. Quantum unpredictability dominates in regular regions of phase space; in irregular regions of phase space we find classical stochasticity governed by a S-dependent Lyapunov exponent as long as t0, where T0 ∼ log S.
U2 - 10.1016/0304-8853(86)90784-5
DO - 10.1016/0304-8853(86)90784-5
M3 - Article
AN - SCOPUS:0022009552
VL - 54-57
SP - 1203
EP - 1204
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
SN - 0304-8853
IS - PART 3
ER -