Universality and emergent effective fluid from jets and string breaking in the massive Schwinger model using tensor networks

TL;DR

This paper uses tensor network methods to study jet interactions in the massive Schwinger model, revealing a universal effective fluid behavior near the strong-weak coupling transition linked to quantum entanglement.

Contribution

It demonstrates the emergence of a universal, chargeless effective fluid from jet interactions in the massive Schwinger model using tensor networks, especially near the phase transition.

Findings

Universal energy-pressure relationship near the transition

Correlation between energy, pressure, and entanglement entropy

Potential applications to collider jet fragmentation analysis

Abstract

We analyze the correlation between the energy, momentum and spatial entanglement produced by two luminal jets in the massive Schwinger model. Using tensor network methods, we show that for m/g > 1/{\pi}, in the vicinity of the strong to weak coupling transition, a nearly perfect and chargeless effective fluid behavior appears around the mid-rapidity region with a universal energy-pressure relationship. The evolution of energy and pressure is strongly correlated with the rise of the spatial entanglement entropy, indicating a key role of quantum dynamics. Some of these observations may be used to analyze high multiplicity jet fragmentation events, energy-energy and energy-charge correlators at current collider energies.