Ring exchanges and the supersolid phase of 4He

Abstract

Using Path Integral Monte Carlo we calculate exchange frequencies in bulk hcp 4He as atoms undergo ring exchange. We fit the frequencies to a lattice model and examine whether such atoms could become a supersolid, that is have a non-classical rotational inertia. We find that the scaling with respect to the number of exchanging atoms is such that superfluid behavior will not be observed in a perfect 4He crystal.

Cited by in corpus (6)

• What makes a crystal supersolid ?
• Density wave and supersolid phases of correlated bosons in an optical lattice
• Supersolidity from defect-condensation in the extended boson Hubbard model
• Quantum melting of a crystal of dipolar bosons
• Absence of low temperature anomaly in the Debye-Waller factor of solid He-4
• Classical and relativistic dynamics of supersolids: variational principle