16 research outputs found
Real-time non-perturbative dynamics of jet production: quantum entanglement and vacuum modification
The production of jets should allow testing the real-time response of the QCD
vacuum disturbed by the propagation of high-momentum color charges. Addressing
this problem theoretically requires a real-time, non-perturbative method. It is
well known that the Schwinger model [QED in dimensions] shares many
common properties with QCD, including confinement, chiral symmetry breaking,
and the existence of vacuum fermion condensate. As a step in developing such an
approach, we report here on fully quantum simulations of a massive Schwinger
model coupled to external sources representing quark and antiquark jets as
produced in annihilation. We study, for the first time, the
modification of the vacuum chiral condensate by the propagating jets and the
quantum entanglement between the fragmenting jets. Our results indicate strong
entanglement between the fragmentation products of the two jets at rapidity
separations , which can potentially exist also in QCD and
can be studied in experiments.Comment: 5 pages + supplementary materials, 10 figures; final versio