# Quark Matter 2019 - the XXVIIIth International Conference on Ultra-relativistic Nucleus-Nucleus Collisions

3-9 November 2019
Wanda Reign Wuhan Hotel
Asia/Shanghai timezone

## Temperature Fluctuation and the Specific Heat in Au+Au Collisions at $\sqrt{s_{NN}}$ = 7.7 $-$ 200 GeV from STAR

4 Nov 2019, 17:40
20m
Wanda Han Show Theatre & Wanda Reign Wuhan Hotel

#### Wanda Han Show Theatre & Wanda Reign Wuhan Hotel

Poster Presentation QCD at finite temperature and baryon density

### Speaker

Xiujun Li (University of Science and Technology of China)

### Description

Specific heat is a thermodynamic quantity that characterizes the equation of state of the system. For a system undergoing phase transition, the specific heat, $C_{V}$, is expected to diverge at the critical point. Temperature fluctuation of the system provides an estimation of $C_{V}$. The specific heat can be extracted from event-by-event temperature fluctuation. Thus the variation of thermal fluctuations with temperature can be effectively used to probe the QCD phase transition and QCD critical point [1].

In this poster, we will present the energy dependence of specific heat and temperature fluctuations of the QCD matter created in Au+Au collisions at $\sqrt{s_{NN}}$ = 7.7, 11.5, 19.6, 39, 62.4 and 200 GeV from STAR and compared with model calculations.

[1] Sumit Basu, Sandeep Chatterjee, Rupa Chatterjee, Tapan K. Nayak, Basanta K. Nandi, Phys. Rev. C 94 (2016) 044901.

### Primary author

Xiujun Li (University of Science and Technology of China)