|
Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2009, Volume 90, Issue 12, Pages 866–868
(Mi jetpl611)
|
|
|
|
This article is cited in 6 scientific papers (total in 6 papers)
CONDENSED MATTER
Roton dipole moment
V. P. Mineev Commissariat à l'Energie Atomique, INAC/SPSMS, 38054
Grenoble, France
Abstract:
The roton excitation in the superfluid $^4$He 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.
Citation:
V. P. Mineev, “Roton dipole moment”, Pis'ma v Zh. Èksper. Teoret. Fiz., 90:12 (2009), 866–868; JETP Letters, 90:12 (2009), 768–770
Linking options:
https://www.mathnet.ru/eng/jetpl611 https://www.mathnet.ru/eng/jetpl/v90/i12/p866
|
Statistics & downloads: |
Abstract page: | 152 | Full-text PDF : | 46 | References: | 34 |
|