Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2008-01-14
Phys.Rev.C77:054312,2008
Physics
Nuclear Physics
Nuclear Theory
Scientific paper
10.1103/PhysRevC.77.054312
In this paper we present results of the lowest eigenvalues of random Hamiltonians for both fermion and boson systems. We show that an empirical formula of evaluating the lowest eigenvalues of random Hamiltonians in terms of energy centroids and widths of eigenvalues are applicable to many different systems (except for $d$ boson systems). We improve the accuracy of the formula by adding moments higher than two. We suggest another new formula to evaluate the lowest eigenvalues for random matrices with large dimensions (20-5000). These empirical formulas are shown to be applicable not only to the evaluation of the lowest energy but also to the evaluation of excited energies of systems under random two-body interactions.
Arima Akito
Shen Janice
Yoshinaga Natsuhiko
Zhao Yu-Min
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