Static linear response of hot and dense QCD matter to electromagnetic fields: leading hard and soft QCD corrections
Year: 2026
Type: article
Abstract: A bstract 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 $$ \mathcal{O}\left({\alpha}_s^{3/2}\right) $$ 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.
Source: Journal of High Energy Physics
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: diamond
Funders: Fundação de Amparo à Pesquisa do Estado de São Paulo, Coordenação de Aperfeiçoamento de Pessoal de Nível Superior, Conselho Nacional de Desenvolvimento Científico e Tecnológico, Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro, Instituto Nacional de Ciência e Tecnologia: Física Nuclear e Aplicações, European Social Fund
OpenAlex ID: W7164929593