Published December 31, 2006 | Version v1
Journal article Metadata-only

Bogoliubov-Cerenkov Radiation in a Bose-Einstein Condensate Flowing against an Obstacle

Creators

  • 1. CNR-BEC-INFM, Trento, I-38050 Povo (Italy)
  • 2. Los Alamos National Laboratory, Los Alamos, New Mexico 87544 (United States)

Description

We study the density modulation that appears in a Bose-Einstein condensate flowing with supersonic velocity against an obstacle. The experimental density profiles observed at JILA are reproduced by a numerical integration of the Gross-Pitaevskii equation and then interpreted in terms of Cerenkov emission of Bogoliubov excitations by the defect. The phonon and the single-particle regions of the Bogoliubov spectrum are, respectively, responsible for a conical wave front and a fan-shaped series of precursors

Additional details

Identifiers

DOI
10.1103/PhysRevLett.97.260403;
arXiv
arXiv:cond-mat/0612114v1;

Publishing Information

Journal Title
Physical Review Letters
Journal Volume
97
Journal Issue
26
Journal Page Range
p. 260403-260403.4
ISSN
0031-9007
CODEN
PRLTAO

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
38024496
Subject category
S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
Descriptors DEI
BOSE-EINSTEIN CONDENSATION; CHERENKOV RADIATION; EQUATIONS; EXCITATION; MODULATION; PHONONS
Descriptors DEC
ELECTROMAGNETIC RADIATION; ENERGY-LEVEL TRANSITIONS; QUASI PARTICLES; RADIATIONS

Optional Information

Notes
(c) 2006 The American Physical Society