| Literature DB >> 11863793 |
J M Vogels1, K Xu, C Raman, J R Abo-Shaeer, W Ketterle.
Abstract
Phonons with wave vector q/(planck constant) were optically imprinted into a Bose-Einstein condensate. Their momentum distribution was analyzed using Bragg spectroscopy with a high momentum transfer. The wave function of the phonons was shown to be a superposition of +q and -q free particle momentum states, in agreement with the Bogoliubov quasiparticle picture.Year: 2002 PMID： 11863793 DOI： 10.1103/PhysRevLett.88.060402
Source DB: PubMed Journal: Phys Rev Lett ISSN： 0031-9007 Impact factor: 9.161