Quantum statistics and the momentum distribution of liquid para-hydrogen

Abstract

Extensive Monte Carlo simulations of bulk liquid para-hydrogen at a temperature T=16.5 K have been carried out using the continuous-space Worm Algorithm. Results for the momentum distribution, as well as for the kinetic energy per particle and the pair correlation function are reported. The static equilibrium thermodynamic properties of this system can be generally computed by assuming that molecules are distinguishable. However, the one-body density matrix (and the associated momentum distribution) are affected by particle indistinguishability and quantum statistics, to an extent that lends itself to experimental observation. Comparisons with available experimental data and other theoretical and numerical calculations are offered.

Replaced with published version

References in corpus (4)

• Worm Algorithm and Diagrammatic Monte Carlo: A New Approach to Continuous-Space Path Integral Monte Carlo Simulations
• Superfluidity and Quantum Melting of para-Hydrogen clusters
• Bose-Einstein Condensate in Solid Helium
• Diffusion Monte Carlo study of the equation of state of solid ortho-D${}_2$

Cited by in corpus (10)

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• Atomic displacements in quantum crystals
• Zero-Point Motion of Liquid and Solid Hydrogen
• Microscopic pair potentials and the physical properties of the condensed phase of parahydrogen
• The solid phase of He-4: A Monte Carlo simulation study
• Momentum distribution of He-3 in one dimension
• Isotopic separation in mixed clusters of molecular hydrogen