Chaos in spin clusters: Correlation functions and spectral properties
Year: 1988
Type: article
Abstract: We investigate dynamic correlation functions for a pair of exchange-coupled classical spins with biaxial exchange and/or single-site anisotropy. This represents a Hamiltonian system with two degrees of freedom for which we have previously established the integrability criteria. We discuss the impact of (non-)integrability on the autocorrelation functions and their spectral properties. We point out the role of long-time anomalies caused by low-flux cantori, which dominate the convergence properties of time averages and determine the long-time asymptotic behavior of autocorrelation functions in nonintegrable cases.
Source: Journal of Applied Physics
DOI: 10.1063/1.340524
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: W2046499887