Multichannel molecular state and rectified short-range boundary condition for spin-orbit-coupled ultracold fermions near p -wave resonances

Spin-Orbit Coupling in Ultracold Fermions

Bodily tides near spin–orbit resonances

Spin–orbit coupling canbedescribed in two approaches. Thefirstmethod, known as the “MacDonald torque”, is often combined with a convenient assumption that the quality factor Q is frequency-independent. This makes the method inconsistent, because derivation of the expression for theMacDonald torque tacitly fixes the rheology of themantle bymaking Q scale as the inverse tidal frequency. Spin–orbi...

Majorana fermions in ferromagnetic chains on the surface of bulk spin-orbit coupled s-wave superconductors

Majorana fermion (MF) excitations in solid state system have non-Abelian statistics which is essential for topological quantum computation. Previous proposals to realize MF, however, generally requires fine-tuning of parameters. Here we explore a platform which avoids the fine-tuning problem, namely a ferromagnetic chain deposited on the surface of a spin-orbit coupled s-wave superconductor. We...

Bosons and Fermions near Feshbach resonances

Near Feshbach resonances, n|a|3 ≫ 1, systems of Bose and Fermi particles become strongly interacting/dense. In this unitary limit both bosons and fermions have very different properties than in a dilute gas, e.g., the energy per particle approach a value h̄n2/3/m times an universal many-body constant. Calculations based upon an approximate Jastrow wave function can quantitatively describe recent...

Spin-orbit-coupled superconductivity

Superconductivity and spin-orbit (SO) interaction have been two separate emerging fields until very recently that the correlation between them seemed to be observed. However, previous experiments concerning SO coupling are performed far beyond the superconducting state and thus a direct demonstration of how SO coupling affects superconductivity remains elusive. Here we investigate the SO coupli...