Landscape statistics of thep-spin Ising model

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Abstract
The statistical properties of the local optima (metastable states) of the infinite-range Ising spin glass with p-spin interactions in the presence of an external magnetic field h are investigated analytically. The average number of optima as well as the typical overlap between pairs of identical optima are calculated for general p. Similarly to the thermodynamic order parameter, for p > 2 and small h, the typical overlap is a discontinuous function of the energy. The size of the jump in increases with p and decreases with h, vanishing at finite values of the magnetic field.
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