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Your search keyword '"Alavani, Bhargav K."' showing total 7 results
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7 results on '"Alavani, Bhargav K."'

6. Spectral Weight Of Excitations In Bose Hubbard Model.

Author

Alavani, Bhargav K. and Pai, Ramesh V.

Subjects
*NUCLEAR excitation, *SUPERFLUIDITY, *MOTT effect (Physics), *TOPOLOGICAL insulators, *DENSITY of states, *SPECTRUM analysis
Abstract

We obtain excitation spectra in the superfluid and the Mott Insulator phases of Bose Hubbard model near unit filling within Random Phase Approximation (RPA) and calculate its spectral weight. This gives a transparent description of contribution of each excitation towards the total Density of States (DOS) which we calculate from these spectral weights. [ABSTRACT FROM AUTHOR]

Published
2017
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7. Random phase approximation and cluster mean field studies of hard core Bose Hubbard model.

Author

Alavani, Bhargav K., Gaude, Pallavi P., Pai, Ramesh V., Singh, Biswas, and Das

Subjects
*HUBBARD model, *MEAN field theory, *QUANTUM fluctuations, *ENERGY-band theory of solids, *STATISTICAL mechanics
Abstract

We investigate zero temperature and finite temperature properties of the Bose Hubbard Model in the hard core limit using Random Phase Approximation (RPA) and Cluster Mean Field Theory (CMFT). We show that our RPA calculations are able to capture quantum and thermal fluctuations significantly better than CMFT. [ABSTRACT FROM AUTHOR]

Published
2018
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