Instytut Podstawowych Problemów Techniki
Polskiej Akademii Nauk

Partnerzy

Mateusz Homenda

Uniwersytet Warszawski (PL)

Ostatnie publikacje
1.  Zdybel P., Homenda M., Chlebicki A., Jakubczyk P., Stability of the Fulde-Ferrell-Larkin-Ovchinnikov states in anisotropic systems and critical behavior at thermal m-axial Lifshitz points, Physical Review A, ISSN: 2469-9926, DOI: 10.1103/PhysRevA.104.063317, Vol.104, No.6, pp.063317-1-12, 2021

Streszczenie:
We revisit the question concerning the stability of nonuniform superfluid states of the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) type to thermal and quantum fluctuations. On general grounds, we argue that the mean-field phase diagram hosting a Lifshitz point cannot be stable to fluctuations for isotropic, continuum systems, at any temperature T>0 in any dimensionality d<4. In contrast, in layered unidirectional systems, the lower critical dimension for the onset of FFLO-type long-range order accompanied by a Lifshitz point at T>0 is d=5/2. In consequence, its occurrence is excluded in d=2, but not in d=3. We propose a relatively simple method, based on nonperturbative renormalization group, to compute the critical exponents of the thermal m-axial Lifshitz point continuously varying m, spatial dimensionality d, and the number of order parameter components, N. We point out the possibility of a robust, fine-tuning free occurrence of a quantum Lifshitz point in the phase diagram of imbalanced Fermi mixtures.

Afiliacje autorów:
Zdybel P. - inna afiliacja
Homenda M. - Uniwersytet Warszawski (PL)
Chlebicki A. - Uniwersytet Warszawski (PL)
Jakubczyk P. - Uniwersytet Warszawski (PL)
100p.

Kategoria A Plus

IPPT PAN

logo ippt            ul. Pawińskiego 5B, 02-106 Warszawa
  +48 22 826 12 81 (centrala)
  +48 22 826 98 15
 

Znajdź nas

mapka
© Instytut Podstawowych Problemów Techniki Polskiej Akademii Nauk 2024