6533b85bfe1ef96bd12bbd3c

RESEARCH PRODUCT

Time-domain analysis of electronic spectra in superfluid 4He

H. Ye. SeferyanJussi ElorantaV. A. Apkarian

subject

SuperfluiditychemistryPhononDegrees of freedom (physics and chemistry)General Physics and Astronomychemistry.chemical_elementDensity functional theoryPhysical and Theoretical ChemistryPerturbation theoryAtomic physicsHeliumSpectral lineSuperfluid helium-4

description

Abstract Electronic absorption spectra of impurities in superfluid helium is developed in time domain, using time-dependent density functional theory to describe liquid 4 He and time-dependent perturbation theory to describe the electronic degrees of freedom of the impurity. Angularly isotropic potentials are used to describe the molecule–helium interactions in the ground and excited electronic states. The calculations rationalize experimentally observed phonon side-bands in 4 He droplets and in bulk helium, and allow assignments of spectral features to specific motions of the liquid.

yearjournalcountryeditionlanguage
2004-09-01Chemical Physics Letters
https://doi.org/10.1016/j.cplett.2004.08.042