Simulation of quantum systems using path integrals in a generalized ensemble

The possibility of using path-integral simulations in a generalized ensemble based on the Tsallis statistics is explored. The primitive model algorithm with the Tsallis ensemble replacing the canonical ensemble converges to the quantum-mechanical result with a smaller number of beads in the isomorphic chain. Examples considered are the harmonic oscillator, two double-well systems and a double-well system immersed in an adiabatic solvent.