551 citations · 2.1k across the 42 of their papers we have counts for
5 papers · 2 filters
Novel Polaron State for Single Impurity in a Bosonic Mott Insulator
Yasuyuki Kato, K. A. Al-Hassanieh, A. E. Feiguin +2
We show that a single impurity embedded in a cold atom bosonic Mott insulator leads to a novel polaron that exhibits correlated motion with an effective mass and a linear size that…
Composite-Field Goldstone States and Higgs Mechanism in Dilute Bose Gases
Fred Cooper, Chih-Chun Chien, Bogdan Mihaila +2
We show that a composite-field (diatom) Goldstone state is expected in a dilute Bose gas for temperatures between the Bose gas critical temperature where the atom Bose-Einstein con…
Analytical limits for cold atom Bose gases with tunable interactions
Bogdan Mihaila, Fred Cooper, John F. Dawson +2
We discuss the equilibrium properties of dilute Bose gases using a non-perturbative formalism based on auxiliary fields related to the normal and anomalous densities. We show analy…
Auxiliary field formalism for dilute fermionic atom gases with tunable interactions
Bogdan Mihaila, John F. Dawson, Fred Cooper +2
We develop the auxiliary field formalism corresponding to a dilute system of spin-1/2 fermions. This theory represents the Fermi counterpart of the BEC theory developed recently by…
Auxiliary field approach to dilute Bose gases with tunable interactions
Fred Cooper, Bogdan Mihaila, John F. Dawson +2
We rewrite the Lagrangian for a dilute Bose gas in terms of auxiliary fields related to the normal and anomalous condensate densities. We derive the loop expansion of the effective…