Disentanglement-induced superconductivity

TL;DR

This paper investigates how spontaneous disentanglement in quantum systems can induce superconductivity and affect Josephson junction behavior, proposing an alternative view to traditional particle conservation models.

Contribution

It introduces a novel approach linking disentanglement to superconductivity and demonstrates a phase transition using the Fermi-Hubbard model.

Findings

Disentanglement can induce a quantum phase transition to a superconducting state.

Disentanglement influences the current phase relation in Josephson junctions.

The model offers an alternative perspective on superconductivity mechanisms.

Abstract

The current study is motivated by a difficulty to reconcile between particle number conservation and superconductivity. An alternative modeling, which is based on the hypothesis that disentanglement spontaneously ocuurs in quantum systems, is explored. The Fermi-Hubbard mode is employed to demonstrate a disentanglement-induced quantum phase transition into a state having a finite superconducting order parameter. Moreover, the effect of disentanglement on Josephson junction's current phase relation is explored.