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 relationship between the perturbation theory in light-front coordinatesand Lorentz-covariant perturbation theory is investigated. A method for findingthe difference between separate terms of the corresponding series without theirexplicit evaluation is proposed. A procedure of constructing additionalcounter-terms to the canonical Hamiltonian that compensate this difference atany finite order is proposed. For the Yukawa model, the light-front Hamiltonianwith all of these counter-terms is obtained in a closed form. Possibleapplication of this approach to gauge theories is discussed.Comment: LaTex 2.09, 20 pages, 5 figure

Comparison of quantum field perturbation theory for the light front with the theory in Lorentz coordinates