Thermal global expansion coefficient measurement for a harmonic trapped gas across Bose-Einstein Condensation.
MERCADO-GUTIÉRREZ, E. D.; POVEDA-CUEVAS, F. J.; BAGNATO, Vanderlei Salvador.
MERCADO-GUTIÉRREZ, E. D.; POVEDA-CUEVAS, F. J.; BAGNATO, Vanderlei Salvador.
 Abstract: We report the measurement of the global thermal expansion coefficient of a confined Bose gas of 87Rb in a harmonic potential around the Bose-Einstein condensation transition temperature. We use the concept of global thermodynamic variable, previously introduced and appropriated for a non-homogeneous system. We observe the behavior of the thermal expansion coefficient above and below the critical temperature showing the lambda-like shape present in superfluid helium. The study demonstrates the potentiality of global thermodynamic variables for the investigation of properties across the critical temperature, and a new way to study the thermodynamic properties of the quantum systems. | |
| Brazilian Journal of Physics |
| v. 48, n. 6, p. 539-542 - Ano: 2018 |
| Fator de Impacto: 1,082 |
| http://dx.doi.org/10.1007/s13538-018-0593-5 |  @article={002911987,author = {MERCADO-GUTIÉRREZ, E. D.; POVEDA-CUEVAS, F. J.; BAGNATO, Vanderlei Salvador.},title={Thermal global expansion coefficient measurement for a harmonic trapped gas across Bose-Einstein Condensation},journal={Brazilian Journal of Physics},note={v. 48, n. 6, p. 539-542},year={2018}} |