Project Details
Projekt
The electroweak response of hot and dense QCD matter (B04)
Subject Area
Nuclear and Elementary Particle Physics, Quantum Mechanics, Relativity, Fields
Term
since 2017
Project identifier
Deutsche Forschungsgemeinschaft (DFG) - Project number 315477589
This project will focus on high net-baryon densities at moderate temperatures, as relevant for heavy-ion collisions of several GeV per nucleon and neutron-star merger events. Further developing an effective hadronic theory for the chiral dynamics of finite-density QCD based on parity doublets, to include realistic axial charges and strangeness, we will compute electroweak currents with in-medium pion propagators using short-distance Migdal parameters. The results will be confronted with measurements of photons and dileptons in heavy-ion collisions. In particular, we aim to determine the electrical conductivity of the dense medium and to predict angular distributions of dilepton pairs to infer polarization signals of the partial restoration of chiral symmetry. Based on a realistic equation of state for beta-equilibrated and charge-neutral matter, we will calculate electroweak spectral functions to determine neutrino emissivities in neutron-star merger events.
DFG Programme
CRC/Transregios
Applicant Institution
Universität Bielefeld
Project Heads
Professorin Dr. Tetyana Galatyuk; Professor Dr. Lorenz von Smekal, since 7/2021; Professor Dr. Jochen Wambach, until 12/2025
