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Spectral Statistics Beyond Random Matrix Theory | | A. V. Andreev
; B. L. Altshuler
; | | Date: |
28 Mar 1995 | | Subject: | cond-mat | | Affiliation: | MIT and NECI | | Abstract: | Using a nonperturbative approach we examine the large frequency asymptotics of the two-point level density correlator in weakly disordered metallic grains. This allows us to study the behavior of the two-level structure factor close to the Heisenberg time. We find that the singularities (present for random matrix ensembles) are washed out in a grain with a finite conductance. The results are nonuniversal (they depend on the shape of the grain and on its conductance), though they suggest a generalization for any system with finite Heisenberg time. | | Source: | arXiv, cond-mat/9503141 | | Other source: | [GID 1064440] pmid10060147 | | Services: | Forum | Review | PDF | Favorites | |
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