Spectral weight of excitations in Bose Hubbard model

Spectral weight of excitations in Bose Hubbard model

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...

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Hauptverfasser: Alavani, Bhargav K., Pai, Ramesh V.
Format: Tagungsbericht
Sprache:eng
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Beschreibung
Zusammenfassung: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.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.4980188