Roton dipole moment |
| |
Authors: | V P Mineev |
| |
Institution: | (1) Department of Physics, Faculty of Electrical Engineering and Information Technology, Slovak University of Technology, Ilkovičova 3, 81219 Bratislava, Slovakia;(2) Institute of Pathology, School of Medicine, Comenius University, Sasinkova 4, 81108 Bratislava, Slovakia; |
| |
Abstract: | The roton excitation in the superfluid 4He does not possess a stationary dipole moment. However, a roton has an instantaneous dipole moment, such that at any given
moment one can find it in the state either with positive or with negative dipole moment projection on its momentum direction.
The instantaneous value of electric dipole moment of roton excitation is evaluated. The result is in reasonable agreement
with recent experimental observation of the splitting of microwave resonance absorption line at roton frequency under external
electric field. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|