Palestrante
Descrição
It has always been a great interest of physics to explain the macroscopic world from the understanding of its microscopic constituents. (1) The first success was studying the behavior of a gas in the Bose-Einstein condensation (BEC), because in this regime, the quantum nature of matter manifests itself macroscopically. (1) In the BEC for a gas, the wave-like behavior shows up typically microkelvin temperatures. (2-3) In most experiments, that condition is usually achieved with samples confined inharmonic potentials. That technique is well known and used worldwide by many research groups. (3) However, the BEC in those systems still lacks a definite description, since their densities are inhomogeneous and the thermodynamic properties do not hold. Hence, it is still an open problem in Physics. In this undergraduate project, we study the thermal properties around the Bose-Einstein critical temperature ($ T_c $) by analyzing experimental data of rubidium-87 gas confined into a harmonic potential. By investigating the atomic density of the samples, we expect to see an abrupt change in density at $ T = T_c $, evidencing the BEC. The properties of that phase transition will be discussed during the SIFSC 2019.
Referências
1 BAGNATO, V. S. A condensação de Bose-Einstein. Revista Brasileira de Ensino de Física, v. 19, n. 1, p. 11-26, mar. 1997.
2 KETTERLE, W.; DURFEE, D. S.; STAMPER-KURN, D. M. Making, probing and understanding Bose-Einstein condensates. In: INTERNATION SCHOOL OF PHYSICS "ENRICO FERMI", 1999, Varenna. Proceedings... Amsterdam: IOP, 1999. v. 140. p. 67-176.
3 BAGNATO, V. S. et al. Bose-Einstein condensation: twenty years after. Romanian Reports in Physics, v. 67, n. 1, p. 5-50, 2015.
| Subárea | Física Atômica e Molecular |
|---|---|
| Apresentação do trabalho acadêmico para o público geral | Sim |
