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 Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The residual interaction for a meson-meson system is computed utilizing thecumulant, or cluster, expansion of the momentum-space time correlation matrix.The cumulant expansion serves to define asymptotic, or free, meson-mesonoperators. The definition of an effective interaction is then based on acomparison of the full (interacting) and the free (noninteracting) timecorrelation matrices. The proposed method, which may straightforwardly betranscribed to other hadron-hadron systems, here is applied to a simple 2+1dimensional U(1) lattice gauge model tuned such that it is confining. Fermionsare treated in the staggered scheme. The effective interaction exhibits arepulsive core and attraction at intermediate relative distances. Thesefindings are consistent with an earlier study of the same model utilizingL\"{u}scher's method where scattering phase shifts are obtained directly.Comment: 28 pages, compressed postscript fil

Residual meson-meson interaction from lattice gauge simulation in a simple (2+1)-dimensional QED model