Speaker
Description
In this talk, we present a novel QCD spectral sum rule at finite temperature incorporating contributions from both the (chromo)electric scale $gT$ and the (chromo)magnetic scale $g^2T$. The sum rule uncovers a strongly coupled QCD thermal spectral function containing both massive quasiparticle modes generated by the electric scale and a massless hydro-like mode generated by the magnetic scale. Furthermore, the sum rule induces an intrinsic transition of behaviors in the spectral function when varying the coupling $g$, which consequently offers a scenario of QCD transition. All these demonstrate the profound impact of topological confinement effects on the spectrum of thermal QCD, which manifest genuine long-range correlations in the system. In the end, we discuss potential impacts to heavy-ion phenomenology.
