Phys. Rev. Lett. 96, 105302 (2006) [4 pages]Off-Diagonal Long-Range Order in Solid 4HeReceived 21 December 2005; published 16 March 2006 Measurements of the moment of inertia by Kim and Chan have found that solid 4He acts like a supersolid at low temperatures. To understand the order in solid 4He, we have used path integral Monte Carlo simulations to calculate the off-diagonal long-range order (ODLRO) [equivalent to Bose-Einstein condensation (BEC)]. We do not find ODLRO in a defect-free hcp crystal of 4He at the melting density. We discuss these results in relation to proposed quantum solid trial functions. We conclude that the solid 4He wave function has correlations which suppress both vacancies and BEC. © 2006 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.96.105302
DOI:
10.1103/PhysRevLett.96.105302
PACS:
67.80.−s, 02.70.Ss, 67.40.−w
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.