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Impurity coupled to a lattice with disorder
A. -M. Visuri, C. Berthod, T. Giamarchi
We study the time-dependent occupation of an impurity state hybridized with a continuum of extended or localized states. Of particular interest is the return probability, which giv…
Interplay of the pseudogap and the BCS gap for heteropairs in K-Li mixture
P. Lipavský, C. Berthod
The description of heteropairs like K-Li near and in the superconducting state requires a fully selfconsistent theory [see Hanai and Ohashi, Phys. Rev. A 90, 043622 (201…
Second-order response theory of radio-frequency spectroscopy for cold atoms
C. Berthod, M. Koehl, T. Giamarchi
We present a theoretical description of the radio-frequency (rf) spectroscopy of fermionic atomic gases, based on the second-order response theory at finite temperature. This appro…
A two-dimensional Fermi liquid with attractive interactions
B. Fröhlich, M. Feld, E. Vogt +4
We realize and study an attractively interacting two-dimensional Fermi liquid. Using momentum resolved photoemission spectroscopy, we measure the self-energy, determine the contact…