منابع مشابه
Lifting/lowering Hopfield models ground state energies
In our recent work [9] we looked at a class of random optimization problems that arise in the forms typically known as Hopfield models. We viewed two scenarios which we termed as the positive Hopfield form and the negative Hopfield form. For both of these scenarios we defined the binary optimization problems whose optimal values essentially emulate what would typically be known as the ground st...
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متن کاملLarge deviations in spin - glass ground - state energies
the date of receipt and acceptance should be inserted later Abstract. The ground-state energy E0 of a spin glass is an example of an extreme statistic. We consider the large deviations of this energy for a variety of models when the number of spins N goes to infinity. In most cases, the behavior can be understood qualitatively, in particular with the help of semi-analytical results for hierarch...
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The performance of commonly used correlation and exchange-correlation functionals has been studied for highly charged atomic ions. Calculated energies have been compared with exact nonrelativistic energies of atomic species with 2–18 electrons for nuclei from Z 2 He to Z 26 Ni . It is found that all density functionals considered here reveal problems in the description of correlation effects as...
متن کاملStatistical fluctuations of ground–state energies and binding energies in nuclei
The statistical fluctuations of the ground–state energy and of the binding energy of nuclei are investigated using both perturbation theory and supersymmetry. The fluctuations are induced by the experimentally observed stochastic behavior of levels in the vicinity of neutron threshold. The results are compared with a recent analysis of binding–energy fluctuations by Bohigas and Leboeuf, and wit...
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ژورنال
عنوان ژورنال: Canadian Journal of Physics
سال: 1980
ISSN: 0008-4204,1208-6045
DOI: 10.1139/p80-223