Effect of inverse magnetic catalysis on conserved charge fluctuations in hadron resonance gas model

TL;DR

This study investigates how inverse magnetic catalysis influences conserved charge fluctuations in a hadron resonance gas model, revealing significant effects on fluctuations and correlations along the chemical freeze-out curve, especially under magnetic fields.

Contribution

It introduces the impact of inverse magnetic catalysis on charge fluctuations and correlations, emphasizing the role of charge conservation in a hadron resonance gas model at finite magnetic fields.

Findings

Charge conservation reduces certain charge correlations.

Baryonic fluctuations increase significantly at high magnetic fields.

Fluctuation products differ markedly with the IMC effect along the freeze-out curve.

Abstract

The effect of inverse magnetic catalysis (IMC) has been observed on the conserved charge fluctuations and the correlations along the chemical freeze-out curve in a hadron resonance gas model. The fluctuations and the correlations have been compared with and without charge conservations. The charge conservation plays an important role in the calculation of the fluctuations at nonzero magnetic field and for the fluctuations in the strange charge at zero magnetic field. The charge conservation diminishes the correlations $\chi_{BS}$ and $\chi_{QB}$, but enhances the correlation $\chi_{QS}$. The baryonic fluctuations (2nd order) at $B = 0.25$ ${GeV}^2$ increases more than two times compared to $B = 0$ at higher $\mu_{B}$. The fluctuations have been compared at nonzero magnetic field along the freeze-out curve i.e along fitted parameters of the chemical freeze-out temperature and chemical potentials, with the fluctuations at nonzero magnetic field along the freeze-out curve with the IMC effect, and the results are very different with the IMC effect. This is clearly seen in the products of different moments ${{\sigma}^2}/{M}$ and $S\sigma$ of net-kaon distribution.