English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We show that parametric level correlations in random-matrix theories areclosely related to a breaking of the symmetry between the advanced and theretarded Green's functions. The form of the parametric level correlationfunction is the same as for the disordered case considered earlier by Simonsand Altshuler and is given by the graded trace of the commutator of thesaddle--point solution with the particular matrix that describes the symmetrybreaking in the actual case of interest. The strength factor differs from thecase of disorder. It is determined solely by the Goldstone mode. It isessentially given by the number of levels that are strongly mixed as theexternal parameter changes. The factor can easily be estimated in applications.Comment: 8 page

Parametric level correlations in random-matrix models