Chaos in spin clusters: Quantum invariants and level statistics
Year: 1990
Type: article
Abstract: The energy-level sequence, whose spacings distribution is the most frequently invoked indicator of quantum chaos, can be derived (for systems with two degrees of freedom) from a two-dimensional representation of quantum invariants by projection. In this representation, such properties of level sequences as effective randomness in integrable models and level repulsion in nonintegrable models can be more directly interpreted in terms of physical properties. In integrable models, anharmonicities convert quasiperiodic level sequences into effectively random sequences.
Source: Journal of Applied Physics
DOI: 10.1063/1.345907
Authors: Niraj Srivastava, Charles Kaufman, Gerhard Müller
Institution: University of Rhode Island
Language: English
Subfield: Statistical and Nonlinear Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2004982749