Abstract
Based on the equivalence between the spin-(1/2 Heisenberg antiferromagnet and the hard-core Bose gas we investigate a Jastrow trial wave function, which has proven to give an excellent ground-state energy. In this paper the energy and the spin-spin correlation functions are evaluated analytically by representing them in terms of partition sums of two-dimensional Ising-like models expressed as integrals over Grassmann variables.
Original language | English |
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Pages (from-to) | 7435 |
Number of pages | 1 |
Journal | Physical Review E |
Volume | 40 |
Issue number | 10 |
DOIs | |
Publication status | Published - 1989 |