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Bosonic superfluid on lowest Landau level
Sergej Moroz, Dam Thanh Son
We develop a low-energy effective field theory of a two-dimensional bosonic superfluid on the lowest Landau level at zero temperature and identify a Berry term that governs the dyn…
Effective theory of chiral two-dimensional superfluids
Carlos Hoyos, Sergej Moroz, Dam Thanh Son
We construct, to leading orders in the momentum expansion, an effective theory of a chiral two-dimensional fermionic superfluid at zero temperature that is consistent…
Super Efimov effect of resonantly interacting fermions in two dimensions
Yusuke Nishida, Sergej Moroz, Dam Thanh Son
We study a system of spinless fermions in two dimensions with a short-range interaction fine-tuned to a p-wave resonance. We show that three such fermions form an infinite tower of…
Unitary Fermi gas, epsilon expansion, and nonrelativistic conformal field theories
Yusuke Nishida, Dam Thanh Son
We review theoretical aspects of unitary Fermi gas (UFG), which has been realized in ultracold atom experiments. We first introduce the epsilon expansion technique based on a syste…
Short-distance and short-time structure of a unitary Fermi gas
Dam T. Son, Ethan G. Thompson
We consider the operator product expansions for unitarity fermions. We compute the dynamic structure factor S(q,w) at large frequency and wavenumber away from the one-particle peak…
Universal four-component Fermi gas in one dimension
Yusuke Nishida, Dam T. Son
A four-component Fermi gas in one dimension with a short-range four-body interaction is shown to exhibit a one-dimensional analog of the BCS-BEC crossover. Its low-energy physics i…