Using path integral Monte Carlo simulations we calculate exchange frequencies in bulk hcp
H e 4 as atoms undergo ring exchange. We fit the frequencies to a lattice model and …

1921 pletely guarantee the negative status of younger animals in the food chain. Therefore,
the alternative option of testing all slaughtered cattle, as implemented in some countries …

Solid Helium-4 in Bulk Doesn't Go With the Flow Page 1 © 2004 American Institute of Physics,
S-0031-9228-0411-320-3 November 2004 Physics Today 23 Solid Helium-4 in Bulk Doesn’t …

An abrupt drop in the moment of inertia recently found in solid helium 4 is explained in terms
of dynamics of zero-point vacancies (ZPV). Mechanical decoupling of ZPV from the motion of …

The small mass and significant zero point motion of solid 4He make it very different from its
conventional counterparts. In the seventies it was suggested that at very low temperatures …

Abstract The phenomenon of Non-Classical Rotational Inertia, in which a body does not
rotate with its rotating container, has been recently observed in solid Helium-4. This property …