Dilatons for Dense Hadronic Matter

TL;DR

This paper explores the role of soft and hard dilaton fields in modeling dense hadronic matter, revealing new structural insights through spontaneous scale symmetry breaking mechanisms.

Contribution

It introduces a novel framework using soft and hard dilatons within hidden local gauge symmetry to describe dense matter, highlighting the interplay of scale symmetry breaking.

Findings

Uncovered a new structure of dense matter involving dilaton fields.

Demonstrated the interplay between soft and hard dilatons in symmetry breaking.

Provided insights into the low-energy dynamics of dense hadronic matter.

Abstract

The idea that the explicit breaking of scale invariance by the trace anomaly of QCD can be rephrased as a spontaneous breaking has been recently exploited to capture the low-energy strong interaction dynamics of dense (and also hot) matter in terms of two dilaton fields, the "soft" (chi_s) and the "hard" (chi_h) fields, in the frame work of the hidden local gauge symmetry. In the Freund-Nambu model, the spontaneous symmetry breaking of scale symmetry is induced by an explicitly breaking term, while the spontaneous symmetry breaking is possible in the flat potential model which is scale symmetric. We discuss the interplay of the soft and hard dilatons using the spontaneously broken scale symmetry schemes and uncover a novel structure of dense matter hitherto unexplored.