Since its discovery in 1938, superfluidity has been the subject of much investigation
because it provides a unique example of a macroscopic manifestation of quantum …

High resolution microwave spectra of the a-type, J= 1–0, transitions of He N= 1–6–H 12 C 14
N, He N= 1–6–H 13 C 14 N, He N= 1–6–H 12 C 15 N, He N= 1–7–D 12 C 14 N, and He N …

The formation of vortices is usually considered to be the main mechanism of angular
momentum disposal in superfluids. Recently, it was predicted that a superfluid can acquire …

We present the first simulation study of bosonic clusters doped with an asymmetric top
molecule. The path-integral Monte Carlo method with the latest methodological advance in …

A hybrid ab initio path integral molecular dynamics/bosonic path integral Monte Carlo
simulation method has been developed, implemented and tested, which allows for the …

An internal coordinate extension of diffusion Monte Carlo (DMC) is described as a first step
toward a generalized reduced-dimensional DMC approach. The method places no …

Helium is the only solvent within which molecules can “freely” rotate, albeit with an
increased moment of inertia relative to the gas phase. Evidence for this can be obtained by …

We report the infrared depletion spectrum of para-and ortho-hydrogen peroxide embedded
in superfluid helium nanodroplets in the OH stretching region. Six transitions were observed …

An extension to diffusion Monte Carlo (DMC) is proposed for simultaneous evaluation of
multiple rotationally excited states of fluxional molecules. The method employs an …

We report high-resolution infrared spectra of OCS isotopologues embedded in helium
nanodroplets that were recorded with a newly built spectrometer. For the normal …