| Full text | |
| Author(s): |
Fritsch, A. R.
;
Tavares, P. E. S.
;
Vivanco, F. A. J.
;
Telles, G. D.
;
Bagnato, V. S.
;
Henn, E. A. L.
Total Authors: 6
|
| Document type: | Journal article |
| Source: | JOURNAL OF STATISTICAL MECHANICS-THEORY AND EXPERIMENT; v. N/A, p. 10-pg., 2018-05-01. |
| Abstract | |
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: | 15/20475-9 - Establishment of an experimental apparatus to study dipolar quantum gases |
| Grantee: | Emanuel Alves de Lima Henn |
| Support Opportunities: | Research Grants - Young Investigators Grants |
| FAPESP's process: | 13/07276-1 - CEPOF - Optics and Photonic Research Center |
| Grantee: | Vanderlei Salvador Bagnato |
| Support Opportunities: | Research Grants - Research, Innovation and Dissemination Centers - RIDC |
| FAPESP's process: | 17/15753-5 - Quantum phases transitions of ultracold atoms in an atomic vortex lattice. |
| Grantee: | Pedro Ernesto Schiavinatti Tavares |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |