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Super Fermi polaron and Nagaoka ferromagnetism in a two-dimesnional square lattice
Hui Hu, Jia Wang, Xia-Ji Liu
We consider the Fermi polaron problem of an impurity hopping around a two-dimensional square lattice and interacting with a sea of fermions at given filling factor. When the intera…
Spectral function of Fermi polarons at finite temperature from a self-consistent many-body -matrix approach in real frequency
Hui Hu, Xia-Ji Liu
We theoretically examine the finite-temperature spectral function of Fermi polarons in three dimensions, by using a self-consistent many-body -matrix theory in real frequency. I…
Thermally stable p-wave repulsive Fermi polaron without a two-body bound state
Hui Hu, Jia Wang, Xia-Ji Liu
We theoretically investigate the polaron physics of an impurity immersed in a two-dimensional Fermi sea, interacting via a p-wave interaction at finite temperature. In the unitary…
Microscopic many-body theory of two-dimensional coherent spectroscopy of exciton-polarons in one-dimensional materials
Jia Wang, Hui Hu, Xia-Ji Liu
We have developed a microscopic many-body theory of two-dimensional coherent spectroscopy (2DCS) for a model of polarons in one-dimensional (1D) materials. Our theory accounts for…