Электронный каталог

Статья

Hnatic, M.
Superfluidity in Multicomponent Fermions Via the Functional Renormalization Group / M.Hnatic, G.Kalagov // Nuclear Physics B [Electronic resource]. – 2023. – Vol.991. – P.116192. – URL: https://doi.org/10.1016/j.nuclphysb.2023.116192. – Bibliogr.:66.

We reveal the critical properties of the phase transition towards superfluid order that has been proposed to occur in large spin fermionic systems. For this purpose, we consider the bosonic field theory for fluctuations of the complex skew-symmetric rank-2 tensor order parameter close to the transition. We then nonperturbatively determine the scale dependence of the couplings of the theory by means of the functional renormalization group. We established a fluctuation-induced first-order phase transition. In the weak-coupling regime, the jump in the order parameter is small and a new phase occurs almost continuously, while in the strong one the discontinuity of the transition is well detectable.



Спец.(статьи,препринты) = С 326.3 - Ферми-системы. Спиновые системы
ОИЯИ = ОИЯИ (JINR)2023
Бюллетени = 42/023