Quantum statistics and the momentum distribution of liquid para-hydrogen

Details Quantum statistics and the momentum distribution of liquid para-hydrogen Quantum statistics and the momentum distribution of liquid para-hydrogen

2009-02-16

arxiv.org/abs/0902.2727v2

Phys. Rev. B 79, 174203 (2009)

Physics

Condensed Matter

Other Condensed Matter

Replaced with published version

Scientific paper

10.1103/PhysRevB.79.174203

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.

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