Matches in SemOpenAlex for { <https://semopenalex.org/work/W943283611> ?p ?o ?g. }
Showing items 1 to 47 of
47
with 100 items per page.
- W943283611 endingPage "180" @default.
- W943283611 startingPage "163" @default.
- W943283611 abstract "We now discuss the elementary waves and oscillations that can take place in a Bose Einstein condensate. We first deal with the elementary excitations as described by the quantum fluid equations. This allows us to study the sound waves in the condensate, sometimes also called Bogoliubov waves, as well as the global modes of the condensed cloud. We then approach the study of kinetic effects, based on the use of the wave kinetic equation. This will allow us to understand the microscopical wave-atom interactions taking place inside the condensate, as well as more refined processes such as the atomic Landau damping, fluid and kinetic instabilities such as beam and modulational instabilities. We show that the sound waves can become unstable, and determine the instability growth rates in both the quantum and the quasi-classical regime. Two specific examples of unstable oscillations are considered in detail. First, the two-stream instability, associated with two counter-propagating condensate beams. Then, the wakefield excitation by a moving condensate in a background thermal gas. Such instabilities can eventually be the seed for the excitation of a broadband turbulent spectrum." @default.
- W943283611 created "2016-06-24" @default.
- W943283611 creator A5000091407 @default.
- W943283611 creator A5011994110 @default.
- W943283611 date "2012-10-08" @default.
- W943283611 modified "2023-09-27" @default.
- W943283611 title "Elementary Excitations in BECs" @default.
- W943283611 cites W1504175299 @default.
- W943283611 cites W1994806883 @default.
- W943283611 cites W2010649265 @default.
- W943283611 cites W2025565216 @default.
- W943283611 cites W2028877813 @default.
- W943283611 cites W2044337499 @default.
- W943283611 cites W2069856826 @default.
- W943283611 cites W2077974906 @default.
- W943283611 cites W2090881510 @default.
- W943283611 cites W2160659687 @default.
- W943283611 cites W3103061289 @default.
- W943283611 doi "https://doi.org/10.1007/978-1-4614-5413-7_8" @default.
- W943283611 hasPublicationYear "2012" @default.
- W943283611 type Work @default.
- W943283611 sameAs 943283611 @default.
- W943283611 citedByCount "0" @default.
- W943283611 crossrefType "book-chapter" @default.
- W943283611 hasAuthorship W943283611A5000091407 @default.
- W943283611 hasAuthorship W943283611A5011994110 @default.
- W943283611 hasConcept C121332964 @default.
- W943283611 hasConceptScore W943283611C121332964 @default.
- W943283611 hasLocation W9432836111 @default.
- W943283611 hasOpenAccess W943283611 @default.
- W943283611 hasPrimaryLocation W9432836111 @default.
- W943283611 hasRelatedWork W1536502753 @default.
- W943283611 hasRelatedWork W2902782467 @default.
- W943283611 hasRelatedWork W2935759653 @default.
- W943283611 hasRelatedWork W3105167352 @default.
- W943283611 hasRelatedWork W3148032049 @default.
- W943283611 hasRelatedWork W54078636 @default.
- W943283611 hasRelatedWork W1501425562 @default.
- W943283611 hasRelatedWork W2298861036 @default.
- W943283611 hasRelatedWork W2954470139 @default.
- W943283611 hasRelatedWork W3084825885 @default.
- W943283611 isParatext "false" @default.
- W943283611 isRetracted "false" @default.
- W943283611 magId "943283611" @default.
- W943283611 workType "book-chapter" @default.