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Entanglement of hard-core bose gas in degenerate levels under local noise

Gedik, Zafer and Karpat, Göktuğ (2009) Entanglement of hard-core bose gas in degenerate levels under local noise. In: 9th International Conference on Materials and Mechanisms of Superconductivity, , Tokyo, Japan

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Abstract

Quantum entanglement properties of the pseudo-spin representation of the BCS model is investigated. In case of degenerate energy levels, where wave functions take a particularly simple form, spontaneous breaking of exchange symmetry under local noise is studied. Even if the Hamiltonian has the same symmetry, it is shown that there is a non-zero probability to end up with a non-symmetric final state. For small systems, total probability for symmetry breaking is found to be inversely proportional to the system size.

Item Type:Papers in Conference Proceedings
Uncontrolled Keywords:Quantum decoherence, spontaneous symmetry breaking, mesoscopic superconductivity
Subjects:Q Science > QC Physics > QC170 Atomic physics. Quantum theory.
Q Science > QC Physics > QC1 General
ID Code:12782
Deposited By:Zafer Gedik
Deposited On:19 Nov 2009 11:40
Last Modified:19 Nov 2009 11:40

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