Quasiparticle approach to molecules interacting with quantum solvents

article Quasiparticle approach to molecules interacting with quantum solvents published yes Mikhail Lemeshko author 37CB05FA-F248-11E8-B48F-1D18A9856A870000-0002-6990-7802 MiLe department Genome-wide Analysis of Root Traits project 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. American Physical Society2017 eng Physical Review Letters 0031-9007 1610.01604 00040476920000610.1103/PhysRevLett.118.095301 1189 M. Lemeshko, “Quasiparticle approach to molecules interacting with quantum solvents,” Physical Review Letters, vol. 118, no. 9. American Physical Society, 2017. Lemeshko, Mikhail. “Quasiparticle Approach to Molecules Interacting with Quantum Solvents.” Physical Review Letters, vol. 118, no. 9, 095301, American Physical Society, 2017, doi:<a href="https://doi.org/10.1103/PhysRevLett.118.095301">10.1103/PhysRevLett.118.095301</a>. Lemeshko M. Quasiparticle approach to molecules interacting with quantum solvents. Physical Review Letters. 2017;118(9). doi:<a href="https://doi.org/10.1103/PhysRevLett.118.095301">10.1103/PhysRevLett.118.095301</a> Lemeshko M. 2017. Quasiparticle approach to molecules interacting with quantum solvents. Physical Review Letters. 118(9), 095301. Lemeshko, Mikhail. “Quasiparticle Approach to Molecules Interacting with Quantum Solvents.” Physical Review Letters. American Physical Society, 2017. <a href="https://doi.org/10.1103/PhysRevLett.118.095301">https://doi.org/10.1103/PhysRevLett.118.095301</a>. Lemeshko, M. (2017). Quasiparticle approach to molecules interacting with quantum solvents. Physical Review Letters. American Physical Society. <a href="https://doi.org/10.1103/PhysRevLett.118.095301">https://doi.org/10.1103/PhysRevLett.118.095301</a> M. Lemeshko, Physical Review Letters 118 (2017). 11192018-12-11T11:50:15Z2025-06-04T08:36:48Z