Browsing Exact and Earth Sciences by Author "Pâţu, Ovidiu I."
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Quantum critical behavior and thermodynamics of the repulsive one-dimensional Hubbard model in a magnetic field
Pâţu, Ovidiu I.; Klümper, Andreas; Foerster, Angela (2020) [Journal article]Even though the Hubbard model is one of the most fundamental models of highly correlated electrons, analytical and numerical data describing its thermodynamics at nonzero magnetization are relatively scarce. We present a ... -
Universality and quantum criticality of the one-dimensional spinor Bose gas
Pâţu, Ovidiu I.; Klümper, Andreas; Foerster, Angela (2018) [Journal article]We investigate the universal thermodynamics of the two-component one-dimensional Bose gas with contact interactions in the vicinity of the quantum critical point separating the vacuum and the ferromagnetic liquid regime. ...