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Browsing Physics by Author "Pandit, Rahul"

Browsing Physics by Author "Pandit, Rahul"

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  • Bose-Hubbard models in confining potentials: Inhomogeneous mean-field theory 
    Pai, R.V.; Kurdestany, J.M.; Sheshadri, K.; Pandit, Rahul (Physical Review B. 85(21); 2012; Article ID: 214524.)
    An extensive study of Mott insulator (MI) and superfluid (SF) shells in Bose-Hubbard (BH) models for bosons in optical lattices with harmonic traps is presented. For this we apply the inhomogeneous mean-field theory ...
  • The inhomogeneous extended Bose-Hubbard model: A mean-field theory 
    Kurdestany, J.M.; Pai, R.V.; Pandit, Rahul (Annalen Der Physik. 524(41702); 2012; 234-244.)
    We develop an inhomogeneous mean-field theory for the extended Bose-Hubbard model with a quadratic, confining potential. In the absence of this potential, our mean-field theory yields the phase diagram of the homogeneous ...
  • The one-dimensional extended Bose-Hubbard model 
    Pai, R.V.; Pandit, Rahul (Proceedings of the Indian Academy of Sciences-Chemical Sciences. 115(5and6); 2003; 721-726.)
    We use the finite-size, density-matrix-renormalization-group (DMRG) method to obtain the zero-temperature phase diagram of the one-dimensional, extended Bose-Hubbard model, for mean boson density rho = 1, in the U-V plane ...
  • Phases and transitions in the spin-1 Bose-Hubbard model: Systematics of a mean-field theory 
    Pai, R.V.; Sheshadri, K.; Pandit, Rahul (Physical Review B. 77(1); 2008; Article ID: 014503)
    We generalize the mean-field theory for the spinless Bose-Hubbard model to account for the different types of superfluid phases that can arise in the spin-1 case. In particular, our mean-field theory can distinguish polar ...
  • Superfluid, Mott-insulator, and mass-density-wave phases in the one-dimensional extended Bose-Hubbard model 
    Pai, R.V.; Pandit, Rahul (Physical Review B. 71(10); 2005; Article ID: 104508.)
    We use the finite-size, density-matrix-renormalization-group (FSDMRG) method to obtain the phase diagram of the one-dimensional (d=1) extended Bose-Hubbard model for density rho=1 in the U-V plane, where U and V are, ...

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