Physical review letters, 2014-04, Vol.112 (14), p.140408-140408, Article 140408
2014
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Details
- Autor(en) / Beteiligte
- Titel
- Quantum criticality and dynamical instability in the kicked-top model
- Ist Teil von
- Physical review letters, 2014-04, Vol.112 (14), p.140408-140408, Article 140408
- Ort / Verlag
- United States
- Erscheinungsjahr
- 2014
- Quelle
- PROLA
- Beschreibungen/Notizen
- We investigate precursors of critical behavior in the quasienergy spectrum due to the dynamical instability in the kicked top. Using a semiclassical approach, we analytically obtain a logarithmic divergence in the density of states, which is analogous to a continuous excited state quantum phase transition in undriven systems. We propose a protocol to observe the cusp behavior of the magnetization close to the critical quasienergy.
- Sprache
- Englisch
- Identifikatoren
- ISSN: 0031-9007eISSN: 1079-7114DOI: 10.1103/PhysRevLett.112.140408Titel-ID: cdi_proquest_miscellaneous_1770335769
- Format
- –
- Schlagworte
- Cusps, Dynamical systems, Dynamics, Instability, Magnetization, Mathematical analysis, Precursors, Stability