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/

Zendy Plus

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

Zendy Tools

Zendy Open

We make a thermal analysis of the light scalar susceptibilities usingSU(3)-Chiral Perturbation Theory to one loop taking into account the QCD sourceof isospin breaking (IB), i.e corrections coming from $m_u\neq m_d$. The valueof the connected scalar susceptibility in the infrared regime, the one relevantwhen approaching chiral symmetry restoration, and below the criticaltemperature is found to be entirely dominated by the $\pi^0-\eta$ mixing, whichleads to model-independent $\mathcal{O}(\epsilon^0)$ corrections, where$\epsilon\sim m_d-m_u$, in the combination $\chi_{uu}-\chi_{ud}$ of flavourbreaking susceptibilities. We also present preliminary results for thecorrections to the real part of the pion self-energy at nexst-to-leading orderin SU(2)-Chiral Perturbation Theory taking into account electromagneticinteraction. The zero and finite temperature results for the charged andneutral pions are given in terms of the three-momentum of the external pion;and their difference is calculated to this order stressing the fact that, atlow and moderate temperature, the mass splitting $M_{\pi^\pm}-M_{\pi^0}$ growswith temperature for, at least, non-zero charged pion mass running inside theloops.

Scalar susceptibilities and Electromagnetic thermal mass differences in Chiral Perturbation Theory