We review the BCS (Bardeen–Cooper–Schrieffer)–BEC (Bose–Einstein condensation)
crossover phenomenon discussed in an ultracold Fermi atomic gas and a neutron superfluid …

A central challenge in modern condensed matter physics is develo** the tools for
understanding nontrivial yet unordered states of matter. One important idea to emerge in this …

Recent experiments with ultracold fermionic atoms in optical lattices have provided a
tuneable and clean realization of the attractive Hubbard model (AHM). In view of this …

Strongly correlated Fermi systems with pairing interactions become superfluid below a
critical temperature T c. The extent to which such pairing correlations alter the behavior of …

An extremely polarized mixture of an ultracold Fermi gas is expected to reduce to a Fermi
polaron system, which consists of a single impurity immersed in the Fermi sea of majority …

Bardeen-Schrieffer-Cooper (BCS) and Bose-Einstein condensation (BEC) occur at opposite
limits of a continuum of pairing interaction strength between fermions. A crossover between …

We investigate the thermal evolution of radio-frequency (RF) spectra of a spin-imbalanced
Fermi gas near a Feshbach resonance in which degenerate Fermi-polaron and classical …

We investigate a mesoscopic spin current for strongly interacting Fermi gases through a
quantum point contact. Under the situation in which spin polarizations in the left and right …

The attractive Hubbard model has become a model readily realizable with ultracold atoms
on optical lattices. However, the superconducting (superfluid) critical temperatures T c's are …

We theoretically present an economical and convenient way to study ground-state
properties of a strongly interacting superfluid Fermi gas. Our strategy is that complicated …