Abstract
A spin-wave (SW) approach for hard-core bosons is presented to treat the problem of two dimensional boson localization in a random potential. After a short review of the method to compute 1/S-corrected observables, the case of random on-site energy is discussed. Whereas the mean-field solution does not display a Bose glass (BG) phase, 1/S corrections do capture BG physics. In particular, the localization of SW excitations is discussed through the inverse participation ratio. © 2014 AIP Publishing LLC.
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Zúñiga, J. P. Á., Lemarié, G., & Laflorencie, N. (2014). Spin wave theory for 2D disordered hard-core bosons. In AIP Conference Proceedings (Vol. 1610, pp. 102–107). American Institute of Physics Inc. https://doi.org/10.1063/1.4893518
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