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Universal Fermi Gas with Two- and Three-Body Resonances
Yusuke Nishida, Dam Thanh Son, Shina Tan
We consider a Fermi gas with two components of different masses, with the s-wave two-body interaction tuned to unitarity. In the range of mass ratio 8.62<M/m<13.6, it is possible f…
Next-to-next-to-leading-order epsilon expansion for a Fermi gas at infinite scattering length
Peter Arnold, Joaquin E. Drut, Dam Thanh Son
We extend previous work on applying the epsilon-expansion to universal properties of a cold, dilute Fermi gas in the unitary regime of infinite scattering length. We compute the ra…
Fermi gas near unitarity around four and two spatial dimensions
Yusuke Nishida, Dam Thanh Son
We construct systematic expansions around four and two spatial dimensions for a Fermi gas near the unitarity limit. Near four spatial dimensions such a Fermi gas can be understood…
Epsilon expansion for a Fermi gas at infinite scattering length
Yusuke Nishida, Dam Thanh Son
We show that there exists a systematic expansion around four spatial dimensions for Fermi gas in the unitarity regime. We perform the calculations to leading and next-to-leading or…
Effective field theory of boson-fermion mixtures and bound fermion states on a vortex of boson superfluid
Yusuke Nishida, Dam Thanh Son
We construct a Galilean invariant low-energy effective field theory of boson-fermion mixtures and study bound fermion states on a vortex of boson superfluid. We derive a simple cri…
General coordinate invariance and conformal invariance in nonrelativistic physics: Unitary Fermi gas
D. T. Son, M. Wingate
We show that the Lagrangian for interacting nonrelativistic particles can be coupled to an external gauge field and metric tensor in a way that exhibits a nonrelativistic version o…