The superconductor-metal transition for 1D bosons with Ohmic dissipation belongs to the Wilson-Fisher universality class with z≈2; the metal phase consists of weakly coupled dissipative boson puddles whose size is set by phase-slip length.
Large N behavior of Non-Ohmic Tunnel Junctions
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abstract
Non-Ohmic tunnel junctions are believed to occur in systems where the exciton and orthogonality catastrophe effects significantly modify tunneling rates. Here we present a simple non-perturbative treatment of the thermodynamic and transport properties of subOhmic and superOhmic tunnel junctions. The large-N approximation demonstrates the existence of a quantum phase transition in subOhmic but not superOhmic tunnel junctions. In addition, we find a pseudogap which vanishes continuously as the transition is approached.
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2026 1verdicts
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Superconductor-"Metal" Transition of One-dimensional Interacting Bosons with Ohmic Quantum Dissipation
The superconductor-metal transition for 1D bosons with Ohmic dissipation belongs to the Wilson-Fisher universality class with z≈2; the metal phase consists of weakly coupled dissipative boson puddles whose size is set by phase-slip length.