18 research outputs found
Stepwise quantum decay of self-localized solitons
The two-phonon decay of self-localized soliton in a one-dimensional monatomic
anharmonic lattice caused by cubic anharmonicity is considered. It is shown
that the decay takes place with emission of phonon bursts. The average rate of
emission of phonons is of the order of vibrational quantum per vibrational
period. Characteristic time of the relaxation is determined by the quantum
anharmonicity parameter; this time may vary from a few (quantum lattices, large
anharmonicity) to thousands (ordinary lattices, small anharmonicity) of
vibrational periods.Comment: 6 pages, 3 figure
Spatial form of localized single-electron states in an alkali-halide crystal with bivalent activator
Dynamic Structure Factor and Dielectric Function of Valence Electrons in Lithium Hydride: An Inelastic XâRay Scattering Study at Finite Momentum Transfer
International audienc