Details
Originalsprache | Englisch |
---|---|
Seiten (von - bis) | 1203-1204 |
Seitenumfang | 2 |
Fachzeitschrift | Journal of Magnetism and Magnetic Materials |
Jahrgang | 54-57 |
Ausgabenummer | PART 3 |
Publikationsstatus | Veröffentlicht - 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 Sachgebiete
- Werkstoffwissenschaften (insg.)
- Elektronische, optische und magnetische Materialien
- Physik und Astronomie (insg.)
- Physik der kondensierten Materie
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in: Journal of Magnetism and Magnetic Materials, Jahrgang 54-57, Nr. PART 3, 02.1986, S. 1203-1204.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › 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 t<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 t<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 -