Paramagnetic susceptibility of an electron pair in the thermal bath. Calculation by Monte Carlo method

New method of simulation of quantum systems on the basis of Feynman Path Integral formalism is proposed and applied to calculation of mixed spin state of an electron pair in the thermal bath. Exchange symmetry and interelectron correlations are being accounted explicitly. Spin pairing which accompanies cooling of the system results in decrease of spin paramagnetic susceptibility, the themperature behaviour of which depends on density and shape of the vessel.
The proposed method could be effective in solution of a wide range of quantum statistical problems.