1.
Phys Rev Lett
; 132(15): 153402, 2024 Apr 12.
Artículo
en Inglés
| MEDLINE
| ID: mdl-38682986
RESUMEN
We report the first observation of the quantum Joule-Thomson (JT) effect in ideal and unitary Fermi gases. We study the temperature dynamics of these systems while they undergo an energy-per-particle conserving rarefaction. For scale-invariant systems, whose equations of state satisfy the relation UâPV, this rarefaction conserves the specific enthalpy, which makes it thermodynamically equivalent to a JT throttling process. We observe JT heating in an ideal Fermi gas, a direct consequence of Pauli blocking. In a unitary Fermi gas, we observe that the JT heating is marginal in the temperature range 0.2â²T/T_{F}â²0.8 as the repulsive quantum-statistical effect is lessened by the attractive interparticle interactions.