@article{1119,
  abstract     = {Understanding the behavior of molecules interacting with superfluid helium represents a formidable challenge and, in general, requires approaches relying on large-scale numerical simulations. Here we demonstrate that experimental data collected over the last 20 years provide evidence that molecules immersed in superfluid helium form recently-predicted angulon quasiparticles [Phys. Rev. Lett. 114, 203001 (2015)]. Most importantly, casting the many-body problem in terms of angulons amounts to a drastic simplification and yields effective molecular moments of inertia as straightforward analytic solutions of a simple microscopic Hamiltonian. The outcome of the angulon theory is in good agreement with experiment for a broad range of molecular impurities, from heavy to medium-mass to light species. These results pave the way to understanding molecular rotation in liquid and crystalline phases in terms of the angulon quasiparticle.},
  author       = {Lemeshko, Mikhail},
  issn         = {0031-9007},
  journal      = {Physical Review Letters},
  number       = {9},
  publisher    = {American Physical Society},
  title        = {{Quasiparticle approach to molecules interacting with quantum solvents}},
  doi          = {10.1103/PhysRevLett.118.095301},
  volume       = {118},
  year         = {2017},
}