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Author Biroli, Giulio ♦ Chamon, Claudio ♦ Zamponi, Francesco
Source arXiv.org
Content type Text
File Format PDF
Date of Submission 2008-07-15
Language English
Subject Domain (in DDC) Computer science, information & general works ♦ Natural sciences & mathematics ♦ Physics
Subject Keyword Condensed Matter - Disordered Systems and Neural Networks ♦ Condensed Matter - Statistical Mechanics ♦ physics:cond-mat
Abstract A superglass is a phase of matter which is characterized at the same time by superfluidity and a frozen amorphous structure. We introduce a model of interacting bosons in three dimensions that displays this phase unambiguously and that can be analyzed exactly or using controlled approximations. Employing a mapping between quantum Hamiltonians and classical Fokker-Planck operators, we show that the ground state wavefunction of the quantum model is proportional to the Boltzmann measure of classical hard spheres. This connection allows us to obtain quantitative results on static and dynamic quantum correlation functions. In particular, by translating known results on the glassy dynamics of Brownian hard spheres we work out the properties of the superglass phase and of the quantum phase transition between the superfluid and the superglass phase.
Description Reference: Phys. Rev. B 78, 224306 (2008)
Educational Use Research
Learning Resource Type Article
Page Count 23


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