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45 papers · 1 filter
Quantum metric of non-Hermitian Su-Schrieffer-Heeger systems
Chao Chen Ye, W. L. Vleeshouwers, S. Heatley +2
Topological insulators have been studied intensively over the last decades. Earlier research focused on Hermitian Hamiltonians, but recently, peculiar and interesting properties we…
Conformal symmetry in quasi-free Markovian open quantum systems
Anatolii I. Lotkov, Denis V. Kurlov, Aleksey K. Fedorov +2
Conformal symmetry governs the behavior of closed systems near second-order phase transitions, and is expected to emerge in open systems going through dissipative phase transitions…
Exact Thermodynamics and Transport in the Classical Sine-Gordon Model
Rebekka Koch, Alvise Bastianello
We revisit the exact thermodynamic description of the classical sine-Gordon field theory, a notorious integrable model. We found that existing results in the literature based on th…
Unitary matrix integrals, symmetric polynomials, and long-range random walks
Ward L. Vleeshouwers, Vladimir Gritsev
Unitary matrix integrals over symmetric polynomials play an important role in a wide variety of applications, including random matrix theory, gauge theory, number theory, and enume…
Fractonic Berezinskii-Kosterlitz-Thouless transition from a renormalization group perspective
Kevin T. Grosvenor, Ruben Lier, Piotr Surówka
Proliferation of defects is a mechanism that allows for topological phase transitions. Such a phase transition is found in two dimensions for the XY-model, which lies in the Berezi…
Quench dynamics of Rényi negativities and the quasiparticle picture
Sara Murciano, Vincenzo Alba, Pasquale Calabrese
The study of the moments of the partially transposed density matrix provides a new and effective way of detecting bipartite entanglement in a many-body mixed state. This is valuabl…