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cond-mat.other2009★ 83 cited
Strong-coupling expansion for the momentum distribution of the Bose Hubbard model with benchmarking against exact numerical results
J. K. Freericks, H. R. Krishnamurthy, Yasuyuki Kato +2
A strong-coupling expansion for the Green's functions, self-energies and correlation functions of the Bose Hubbard model is developed. We illustrate the general formalism, which in…
cond-mat.other2008★ 25 cited
Canonical Trajectories and Critical Coupling of the Bose-Hubbard Hamiltonian in a Harmonic Trap
G. G. Batrouni, H. R. Krishnamurthy, K. W. Mahmud +2
Quantum Monte Carlo (QMC) simulations and the Local Density Approximation (LDA) are used to map the constant particle number (canonical) trajectories of the Bose Hubbard Hamiltonia…