Scale Symmetries of Spherical String Fluids

TL;DR

This paper investigates the symmetry properties of spherical relativistic star models with string fluids, exploring how homothetic maps influence their structure and providing a generalized radiating metric for such systems.

Contribution

It introduces a generalized Vaidya-like metric for string fluids and analyzes their similarity structures using homothetic maps, advancing understanding of spherical star models with string matter.

Findings

Identification of homothetic symmetries in string fluid models

Development of a generalized radiating metric for spherical stars with strings

Insights into the similarity structure of string fluids

Abstract

We consider homothetic maps in a family of spherical relativistic star models. A generalization of Vaidya's radiating metric provides a fluid atmosphere of radiation and strings. The similarity structure of the string fluid is investigated.