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Neural network extraction of chromo-electric and chromo-magnetic gluon masses

27 Oct 2025, 09:40
20m
秦宫(Qin Palace)

秦宫(Qin Palace)

桂林大公馆酒店 No. 2, Zhongyin Road, Xiufeng District, Guilin
Oral QCD 相变与状态方程(QCD phase transition and equation of state) Parallel I

Speaker

Jie Mei (中国科学院大学物理科学学院)

Description

We present a neural network-based quasi-particle model to separate the contributions of chromo-electric and chromo-magnetic gluons. Using dual residual networks, we extract temperature-dependent masses from SU(3) lattice thermodynamic data of pressure and trace anomaly. After incorporating physics regularizations, the trained models reproduce lattice results with high accuracy over $T/T_c \in [1,10]$, capturing both the crossover behavior near $T_c$ and linear scaling at high temperatures. The extracted masses exhibit a physically reasonable behavior: they decrease sharply around $T_c$ and increase linearly thereafter. We find significant differences between thermal and screening masses near $T_c$, reflecting non-perturbative dynamics, while they converge at $T \gtrsim 2T_c$.

Primary authors

Jie Mei (中国科学院大学物理科学学院) Prof. Lingxiao Wang (Riken) Prof. Mei Huang (中国科学院大学核科学与技术学院)

Presentation materials

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