Speaker
Georgii Kalagov
(BLTP JINR)
Description
We explore superfluidity in $SU(N)$ Fermi gases using the functional renormalization group. Going beyond mean-field we track the flow of the effective action and resolve thermodynamics near the transition. Our study uncovers a fluctuation-induced first-order superfluid transition for $N \geq 4$, absent at mean-field level. We quantify the critical temperature and the discontinuities in the gap and entropy density, showing that increasing $N$ lowers $T_c$ but amplifies the sharpness of the transition
Author
Georgii Kalagov
(BLTP JINR)
