Advanced search
Start date
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Thermodynamic measurement of the sound velocity of a Bose gas across the transition to Bose-Einstein condensation

Full text
Fritsch, A. R. [1] ; Tavares, P. E. S. [1] ; Vivanco, F. A. J. [1] ; Telles, G. D. [1] ; Bagnato, V. S. [1] ; Henn, E. A. L. [1]
Total Authors: 6
[1] Univ Sao Paulo, Sao Carlos Inst Phys, POB 369, BR-13560970 Sao Carlos, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Web of Science Citations: 1

We present an alternative method for determining the sound velocity in atomic Bose-Einstein condensates, based on thermodynamic global variables. The total number of trapped atoms was as a function of temperature carefully studied across the phase transition, at constant volume. It allowed us to evaluate the sound velocity resulting in consistent values from the quantum to classical regime, in good agreement with previous results found in literature. We also provide some insight about the dominant sound mode (thermal or superfluid) across a wide temperature range. (AU)

FAPESP's process: 17/15753-5 - Quantum phases transitions of ultracold atoms in an atomic vortex lattice.
Grantee:Pedro Ernesto Schiavinatti Tavares
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 13/07276-1 - CEPOF - Optics and Photonic Research Center
Grantee:Vanderlei Salvador Bagnato
Support type: Research Grants - Research, Innovation and Dissemination Centers - RIDC
FAPESP's process: 15/20475-9 - Establishment of an experimental apparatus to study dipolar quantum gases
Grantee:Emanuel Alves de Lima Henn
Support type: Research Grants - Young Investigators Grants