Phys.org March 19, 2024
The cascades of particles produced by the fragmentation of supposedly entangled particles emitted from high energy particle collisions should allow testing the real-time response of the QCD vacuum disturbed by the propagation of high-momentum color charges. A team of researchers in the US (Stony Brook University, Brook Haven National Laboratory) developed fully quantum simulations of a massive Schwinger model coupled to external sources representing quark and antiquark jets as produced in e+e− annihilation. They studied the modification of the vacuum chiral condensate by the propagating jets and the quantum entanglement between the fragmenting jets. Their results indicated strong entanglement between the fragmentation products of the two jets at rapidity separations Δη≤2, which could potentially exist also in QCD and could be studied in experiments… read more. Open Access TECHNICAL ARTICLE
Time evolution of the local charge density (vertical bars) and of the electric field (arrows)… Credit: Phys. Rev. Lett. 131, 021902, 13 July 2023