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A new puzzle for random interaction

Calvin W. Johnson, Hai Ah Nam

nucl-tharXiv:nucl-th/0612018

Abstract

We continue a series of numerical experiments on many-body systems with random two-body interactions, by examining correlations in ratios in excitation energies of yrast J = 0, 2, 4, 6, 8 states. Previous studies, limited only to J = 0,2,4 states, had shown strong correlations in boson systems but not fermion systems. By including J 6 states and considering different scatter plots, strong and realistic correlations appear in both boson and fermion systems. Such correlations are a challenge to explanations of random interactions.

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