Published February 1997 | Version v1
Journal article Metadata-only

Temperature-Dependent Damping and Frequency Shifts in Collective Excitations of a Dilute Bose-Einstein Condensate

Creators

  • 1. Joint Institute for Laboratory Astrophysics, National Institute of Standards and Technology and University of Colorado, and Physics Department, University of Colorado, Boulder, Colorado 80309-0440 (United States)

Description

We extend to finite temperature the study of collective excitations of a Bose-Einstein condensate in a dilute gas of 87Rb. Measurements of two modes with different angular momenta show unexpected temperature-dependent frequency shifts, with very different behavior for the two symmetries; in addition there is a sharp feature in the temperature dependence of one mode. The damping of these excitations exhibits dramatic temperature dependence, with condensate modes at temperatures near the transition damping even faster than analogous noncondensate oscillations. copyright 1997 The American Physical Society

Additional details

Publishing Information

Journal Title
Physical Review Letters
Journal Volume
78
Journal Issue
5
Journal Page Range
p. 764-767.
ISSN
0031-9007
CODEN
PRLTAO

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
28040417
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
Descriptors DEI
ANGULAR MOMENTUM; BOSE-EINSTEIN CONDENSATION; COLLECTIVE EXCITATIONS; DAMPING; FREQUENCY ANALYSIS; GASES; MAGNETIC FIELDS; OSCILLATIONS; RUBIDIUM; TEMPERATURE DEPENDENCE
Descriptors DEC
ALKALI METALS; ELEMENTS; ENERGY-LEVEL TRANSITIONS; EXCITATION; FLUIDS; METALS