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Generalized gradient expansion for inhomogeneous dynamical mean-field theory: Application to ultracold atoms in a harmonic trap
J. K. Freericks, Shuyang Han, Karlis Mikelsons +1
We develop a generalized gradient expansion of the inhomogeneous dynamical mean-field theory method for determining properties of ultracold atoms in a trap. This approach goes beyo…
Feshbach modulation spectroscopy
A. Dirks, K. Mikelsons, H. R. Krishnamurthy +1
In the vicinity of a Feshbach resonance, a system of ultracold atoms on an optical lattice undergoes rich physical transformations which involve molecule formation and hopping of m…
Strong-coupling expansion for ultracold bosons in an optical lattice at finite temperatures in the presence of superfluidity
Manjari Gupta, H. R. Krishnamurthy, J. K. Freericks
We develop a strong-coupling () expansion technique for calculating the density profile for bosonic atoms trapped in an optical lattice with an overall harmonic trap at fi…
Spectral moment sum rules for the retarded Green's function and self-energy of the inhomogeneous Bose-Hubbard model in equilibrium and nonequilibrium
J. K. Freericks, V. Turkowski, H. R. Krishnamurthy +1
We derive expressions for the zeroth and the first three spectral moment sum rules for the retarded Green's function and for the zeroth and the first spectral moment sum rules for…