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 Tools annual

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 monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

We evaluate the next-to-leading order correction to the Nambu-Jona-Lasiniomodel starting from quantum chromodynamics. We show that a systematic expansionexists, starting from a given set of exact classical solutions, so that higherorder corrections could in principle be computed at any order. In this way, weare able to fix the constants of the Nambu-Jona-Lasinio model from quantumchromodynamics and analyze the behavior of strong interactions at low energies.The technique is to expand in powers of currents of the generating functional.We apply it to a simple Yukawa model with self-interaction showing how this hasa Nambu-Jona-Lasinio model and its higher order corrections as a low-energylimit. The same is shown to happen for quantum chromodynamics in the chirallimit with two quarks. We prove stability of the NJL model so obtained. Then,we prove that the correction term we obtained does not change the criticaltemperature of the chiral transition of the Nambu-Jona-Lasinio model at zerochemical potential.

Correction to Nambu-Jona-Lasinio model from QCD at the next-to-leading order