# Testing the Influence of Surface Tension and Finite Width of QGP Bags on the QCD Matter EOS Properties at NICA Energies

## TL;DR

This paper emphasizes the importance of surface tension and finite width of QGP bags in understanding the QCD phase diagram, proposing directions for improved statistical models to describe phase transitions at NICA energies.

## Contribution

It introduces new considerations of surface tension and medium-dependent width of QGP bags, and suggests development of realistic solvable models for various QCD phase transitions.

## Key findings

- Highlighting the role of surface tension in QGP bag stability
- Proposing models for deconfinement phase transition types
- Identifying key projects for signals of mixed phase at NICA

## Abstract

Here I give some strong arguments that the central issues for theoretical studies of the (tri)critical endpoint of the QCD phase diagram are the surface tension of large/heavy QGP bags and their medium dependent width. Then I discuss three major directions to further develop the realistic exactly solvable statistical models which simultaneously are able to describe the 1-st order deconfinement phase transition, the 2-nd order one and the cross-over. Also I analyze the most necessary projects that have to be studied in order to formulate the reliable and convincing signals of the mixed phase formation at NICA energies.