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Browsing Physical & Applied Sciences by Author "Dhar, A."

Browsing Physical & Applied Sciences by Author "Dhar, A."

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  • Bose-Hubbard model in a strong effective magnetic field: Emergence of a chiral Mott insulator ground state 
    Dhar, A.; Maji, M.; Mishra, T.; Pai, R.V.; Mukerjee, S.; Paramekanti, A. (Physical Review A. 85(4); 2012; Article ID: 041602(R).)
    Motivated by experiments on Josephson junction arrays, and cold atoms in an optical lattice in a synthetic magnetic field, we study the "fully frustrated" Bose-Hubbard model with half a magnetic flux quantum per plaquette. ...
  • Chiral Mott insulator with staggered loop currents in the fully frustrated Bose-Hubbard model 
    Dhar, A.; Mishra, T.; Maji, M.; Pai, R.V.; Mukerjee, S.; Paramekanti, A. (Physical Review B. 87(17); 2013; Article no. 174501.)
    Motivated by experiments on Josephson junction arrays in a magnetic field and ultracold interacting atoms in an optical lattice in the presence of a "synthetic" orbital magnetic field, we study the "fully frustrated" ...
  • Hard-core bosons in a zig-zag optical superlattice 
    Dhar, A.; Mishra, T.; Pai, R.V.; Mukerjee, S.; Das, B.P. (Physical Review A. 88(5); 2013; Article No. 053625 .)
    We study a system of hard-core bosons at half-filling in a one-dimensional optical superlattice. The bosons are allowed to hop to nearest- and next-nearest-neighbor sites. We obtain the ground-state phase diagram as a ...
  • Mean-field analysis of quantum phase transitions in a periodic optical superlattice 
    Dhar, A.; Singh, M.; Pai, R.V.; Das, B.P. (Physical Review A. 84(3); 2011; Article ID: 033631.)
    We analyze the various phases exhibited by a system of ultracold bosons in a periodic optical superlattice using the mean-field decoupling approximation. We investigate for a wide range of commensurate and incommensurate ...
  • Quantum phases of ultracold bosonic atoms in a one-dimensional optical superlattice 
    Dhar, A.; Mishra, T.; Pai, R.V.; Das, B.P. (Physical Review A. 83(5); 2011; Article ID: 053621.)
    We analyze various quantum phases of ultracold bosonic atoms in a periodic one-dimensional optical superlattice. Our studies have been performed using the finite-size density-matrix renormalization group method in the ...

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