Thermodynamical observables in a finite temperature window from the Monte Carlo Hamiltonian

H. Kröger, X.Q. Luo and K.J.M. Moriarty

Mathematics and Computers in Simulation (MATCOM), 2003, vol. 62, issue 3, 377-383

Abstract: The Monte Carlo (MC) Hamiltonian is a new stochastic method to solve many-body problems. The MC Hamiltonian represents an effective Hamiltonian in a finite energy window. We construct it from the classical action via Monte Carlo with importance sampling. The MC Hamiltonian yields the energy spectrum and corresponding wave functions in a low energy window. This allows to compute thermodynamical observables in a low temperature window. We show the working of the MC Hamiltonian by an example from lattice field theory (Klein–Gordon model).

Keywords: Many-body systems; Thermodynamical observables; Monte Carlo methods (search for similar items in EconPapers)
Date: 2003
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Persistent link: https://EconPapers.repec.org/RePEc:eee:matcom:v:62:y:2003:i:3:p:377-383

DOI: 10.1016/S0378-4754(02)00230-6

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