Two-component quark-gluon plasma in stringy models

TL;DR

This paper proposes that stringy models of QCD naturally include a light scalar, which explains the two-component behavior of quark-gluon plasma observed in experiments and supported by lattice data.

Contribution

It introduces a stringy model framework that predicts a light scalar as a universal feature, linking theoretical models with experimental and lattice observations.

Findings

The two-component liquid model matches experimental quark-gluon plasma properties.

Lattice data suggests the presence of a condensed scalar field.

The model proposes a testable lattice check for the scalar's existence.

Abstract

The two-component liquid model reproduces the basic properties of the quark-gluon plasma as observed in heavy-ion collisions. The key dynamic element of the model is the existence of a light scalar. We argue that existence of such a scalar is a generic feature of stringy models of quantum chromodynamics. The lattice data provide evidence for a condensed, three-dimensional scalar field as well. We outline a possible crucial check of the model on the lattice.