Orateurs
M.
Pierre Fromholz
(LPTM Cergy)M.
Valentin Bois
(LPTM Cergy)
Description
We investigate the zero-temperature phase diagram of two-orbital SU($N$) fermionic models at incommensurate filling which are directly relevant to strontium and ytterbium ultracold atoms loading into a one-dimensional optical lattice.
Using a low-energy approach that takes into account explicitly the SU($N$) symmetry, we find that a spectral gap for the nuclear-spin degrees of freedom is formed for generic interactions. Several phases with one or two gapless modes are then stabilized which describe the competition between different density instabilities.
Auteur principal
M.
Pierre Fromholz
(LPTM Cergy)
Co-auteurs
Prof.
Philippe Lecheminant
(LPTM Cergy)
M.
Valentin Bois
(LPTM Cergy)
