A New Approach to the Spin 1/2 Quantum Heisenberg Model

1993/03/23 by K. -H. Mütter, K.-H. Mütter, Mütter, K. -H.
Physics and Astronomy · #Advanced Thermodynamics and Statistical Mechanics #Condensed Matter (cond-mat) #FOS: Physical sciences #Quantum many-body systems #Theoretical and Computational Physics #cond-mat

paper · pdf · doi:10.48550/arxiv.cond-mat/9303039

14pages (revtex), WU B 93-11

openalex publication_date 1993/03/23 · arxiv created 1993/05/25 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/02

Abstract

An evolution equation for the expectation values of the Boltzmann factor between monomer valence bond states is derived. It contains the whole information on the thermodynamical and magnetic properties of the spin (1)/(2) quantum Heisenberg model. A new approximation scheme is proposed and studied in the thermodynamical limit.

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