Adding an auxiliary nonlinear term to the quantum Rabi model extends its quantum phase transition into a continuous regime, yielding globally diverging quantum Fisher information and criticality-enhanced metrology precision in dynamics that persists with decoherence.
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Nonminimal spin-orbit coupling deforms angular-momentum branches in a quantum ring, producing distinct signatures in thermodynamic functions and thermomechanical instabilities enhanced by Fermi statistics, with a phenomenological model yielding anomalous thermal contraction.
In the 3D Hofstadter-Hubbard model, superconductivity occurs for arbitrarily weak attraction below the critical flux for Weyl points with BCS-like gap scaling, but requires finite interaction strength above it.
citing papers explorer
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Globalized critical quantum metrology in dynamics of quantum Rabi model by auxiliary nonlinear term
Adding an auxiliary nonlinear term to the quantum Rabi model extends its quantum phase transition into a continuous regime, yielding globally diverging quantum Fisher information and criticality-enhanced metrology precision in dynamics that persists with decoherence.
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Thermodynamics and emergent thermomechanical response of a quantum ring with nonminimal spin--orbit coupling
Nonminimal spin-orbit coupling deforms angular-momentum branches in a quantum ring, producing distinct signatures in thermodynamic functions and thermomechanical instabilities enhanced by Fermi statistics, with a phenomenological model yielding anomalous thermal contraction.
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Superconducting properties of the three-dimensional Hofstadter-Hubbard model below the critical flux for Weyl points
In the 3D Hofstadter-Hubbard model, superconductivity occurs for arbitrarily weak attraction below the critical flux for Weyl points with BCS-like gap scaling, but requires finite interaction strength above it.