Calibrating Analytical Models for Semilocal Strings

TL;DR

This paper calibrates two analytical models of semilocal strings using extensive field theory simulations, aiming to improve the models' accuracy in describing these cosmic structures.

Contribution

It introduces a calibration method for semilocal string models based on high-precision simulation data, advancing the modeling of cosmic string networks.

Findings

Preliminary parameter constraints for models

Comparison of model predictions with simulation data

Methodology for characterizing string networks

Abstract

In this work we calibrate two different analytic models of semilocal strings by constraining the values of their free parameters. In order to do so, we use data obtained from the largest and most accurate field theory simulations of semilocal strings to date, and compare several key properties with the predictions of the models. As this is still work in progress, we present some preliminary results together with descriptions of the methodology we are using in the characterisation of semilocal string networks.