Computational techniques allowing path-integral calculations of quantum many-body systems are introduced and applied to liquid and solid helium. The computations presented in this paper do not include exchange effects. The range and limitations of the method are demonstrated by presenting thermodynamic properties, radial distribution functions, and, for the solid phase, the single-particle distribution and intermediate scattering function for imaginary times.

• Received 2 April 1984

DOI:https://doi.org/10.1103/PhysRevB.30.2555