A New Approach to the Spin 1/2 Quantum Heisenberg Model
classification
❄️ cond-mat
keywords
heisenbergmodelquantumspinthermodynamicalapproachapproximationboltzmann
read the original 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 $\frac{1}{2}$ quantum Heisenberg model. A new approximation scheme is proposed and studied in the thermodynamical limit.
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