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Factorization and criticality in the anisotropic XY chain via correlations
(Mdpi Ag, 2015-01-01)
In this review, we discuss the zero and finite temperature behavior of various bipartite quantum and total correlation measures, the skew information-based quantum coherence and the local quantum uncertainty in the thermal ...
Closure of the entanglement gap at quantum criticality: The case of the quantum spherical model
(American Physical Society, 2020-12)
The study of entanglement spectra is a powerful tool to detect or elucidate universal behavior in quantum many-body systems. We investigate the scaling of the entanglement (or Schmidt) gap δξ , i.e., the lowest-laying gap ...
Quantum criticality and state engineering in the simulated anisotropic quantum Rabi model
(2018)
Promising applications of the anisotropic quantum Rabi model (AQRM) in broad parameter ranges are explored, which is realized with superconducting flux qubits simultaneously driven by two-tone time-dependent magnetic fields. ...
Metallic quantum critical points with finite BCS couplings
(American Physical Society, 2015-11-02)
We study the fate of superconductivity in the vicinity of a class of metallic quantum critical points obtained by coupling a Fermi surface to a critical boson. In such systems there is a competition between the enhanced ...
Quantum thermodynamics of quantum critical systems
(Universidade Federal de Minas GeraisBrasilICX - DEPARTAMENTO DE FÍSICAPrograma de Pós-Graduação em FísicaUFMG, 2022-02-11)
Esta tese dedica-se ao estudo de sistemas que apresentam transições de fase quânticas contínuas sujeitos a um protocolo termodinâmico de trabalho. Particularmente, investigamos como as coerências quânticas criadas por uma ...