Static linear response of hot and dense QCD matter to electromagnetic fields: Leading hard and soft QCD corrections
Abstract
We compute the static electromagnetic susceptibilities of a hot and dense quark-gluon plasma using perturbative Quantum Chromodynamics (QCD). Our evaluation includes the leading 𝒪(αs) correction as well as the leading soft, resummed contribution of 𝒪(αs3/2) within electrostatic QCD. By matching to Lattice QCD at vanishing baryon chemical potential through Lattice perturbation theory, we establish a connection between perturbative results and Lattice simulations and assess the size of higher-order corrections. This extends the electromagnetic susceptibilities to finite baryon chemical potential, where Lattice methods are not applicable and establishes first-principle constraints on the quark-gluon plasma's electromagnetic response at temperatures and densities relevant for intermediate-energy heavy-ion collisions.
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BibTeX
@misc{ferreira2026static,
title = {{Static linear response of hot and dense QCD matter to electromagnetic fields: Leading hard and soft QCD corrections}},
author = {Osvaldo Ferreira and Eduardo S. Fraga and Tyler Gorda and Risto Paatelainen and Leon Sandbote and Kaapo Seppänen},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2606.16377},
eprint = {2606.16377},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2606.16377},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Static linear response of hot and dense QCD matter to electromagnetic fields: Leading hard and soft QCD corrections
AU - Osvaldo Ferreira
AU - Eduardo S. Fraga
AU - Tyler Gorda
AU - Risto Paatelainen
AU - Leon Sandbote
AU - Kaapo Seppänen
PY - 2026
DA - 2026/09/30
PB - arXiv
DO - 10.48550/arxiv.2606.16377
UR - https://arxiv.org/abs/2606.16377
AB - We compute the static electromagnetic susceptibilities of a hot and dense quark-gluon plasma using perturbative Quantum Chromodynamics (QCD). Our evaluation includes the leading 𝒪(α_s) correction as well as the leading soft, resummed contribution of 𝒪(α_s^3/2) within electrostatic QCD. By matching to Lattice QCD at vanishing baryon chemical potential through Lattice perturbation theory, we establish a connection between perturbative results and Lattice simulations and assess the size of higher-order corrections. This extends the electromagnetic susceptibilities to finite baryon chemical potential, where Lattice methods are not applicable and establishes first-principle constraints on the quark-gluon plasma's electromagnetic response at temperatures and densities relevant for intermediate-energy heavy-ion collisions.
ER -