Work

Condensation of lighter-than-physical pions in QCD

Year: 2025

Type: conference-paper

Abstract: We report on the results of the 2+1 flavour QCD simulations at nonzero isospin chemical potential performed at half the physical light quark mass. At low temperatures and large isospin chemical potential Bose-Einstein Condensation (BEC) occurs, creating a pion condensed phase, separated from the hadronic and quark-gluon plasma phases by the BEC transition line. For physical quark masses, the section of this line between the hadronic and BEC phases was found to be almost perfectly vertical, i.e. aligned with the temperature axis. We show that for lighter than physical pions, this section remains vertical, and approaches the axis of vanishing chemical potential linearly with the pion mass, giving a prediction of the phase diagram in the chiral limit.

Source: International Symposium on Lattice Field Theory (LATTICE)

DOI: 10.22323/1.466.0157

Authors: Volodymyr Chelnokov, Bastian Brandt, Francesca Cuteri, Gergely Endrodi

Institutions: Eötvös Loránd University, Bielefeld University, Goethe University Frankfurt

Language: English

Topic: High-Energy Particle Collisions Research

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Funders: Deutsche Forschungsgemeinschaft, National Research, Development and Innovation Office, HORIZON EUROPE European Research Council

Awards: Cosmological phase transitions of Standard Model Matter and their gravitational wave signatures, G166579837, TRR 211: Stark wechselwirkende Materie unter extremen Bedingungen