Analytic expressions for the two-qubit mean-force Gibbs state show that reservoir-mediated entanglement is highest at low temperature, non-monotonic in coupling strength, and can be enhanced by broadening the reservoir spectral density.
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The chiral Dicke model exhibits robust U(1) symmetry breaking in a superradiant phase and multiversality, with the dynamical critical exponent zν changing from 1 to 1/2 along a special parameter line.
Aligning an exceptional point with a dissipative phase transition in an extended open Dicke model amplifies critical fluctuations and modifies critical exponents through EP-induced Jordan-block dynamics.
citing papers explorer
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Reservoir-mediated spin entanglement in the mean-force Gibbs state
Analytic expressions for the two-qubit mean-force Gibbs state show that reservoir-mediated entanglement is highest at low temperature, non-monotonic in coupling strength, and can be enhanced by broadening the reservoir spectral density.
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Robust continuous symmetry breaking and multiversality in the chiral Dicke model
The chiral Dicke model exhibits robust U(1) symmetry breaking in a superradiant phase and multiversality, with the dynamical critical exponent zν changing from 1 to 1/2 along a special parameter line.
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Enhanced dissipative criticality at an exceptional point
Aligning an exceptional point with a dissipative phase transition in an extended open Dicke model amplifies critical fluctuations and modifies critical exponents through EP-induced Jordan-block dynamics.