Tunneling and Orthogonality Catastrophe in the Topological Mechanism of Superconductivity
A. G. Abanov, P. B. Wiegmann
DOI 10.1103/PhysRevLett.78.4103 · Physical Review Letters
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Abstract
We compute the angular dependence of the order parameter and tunneling amplitude in a model exhibiting topological superconductivity and sketch its derivation as a model of a doped Mott insulator. We show that ground states differing by an odd number of particles are orthogonal and the order parameter is in the d representation, although the gap in the electronic spectrum has no nodes. We also develop an operator algebra that allows one to compute off-diagonal correlation functions.
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