https://doi.org/10.1140/epjc/s10052-025-14728-3
Regular Article - Theoretical Physics
Exploring QCD phase transitions and neutron star properties via holographic models
1
School of Fundamental Physics and Mathematical Sciences, Hangzhou Institute for Advanced Study, UCAS, 310024, Hangzhou, China
2
Institute of Theoretical Physics, Chinese Academy of Sciences, 100190, Beijing, China
3
University of Chinese Academy of Sciences (UCAS), 100049, Beijing, China
4
International Center for Theoretical Physics Asia-Pacific (ICTP-AP), UCAS, 100190, Beijing, China
5
School for Theoretical Physics, School of Physics and Electronics, Hunan University, 410082, Changsha, China
6
Hunan Provincial Key Laboratory of High-Energy Scale Physics and Applications, Hunan University, 410082, Changsha, China
Received:
19
July
2025
Accepted:
30
August
2025
Published online:
17
September
2025
We investigate the QCD phase transition and its phase structure within Einstein–Maxwell-Dilaton-scalar system and compare the results with those obtained from the Einstein–Maxwell-Dilaton system. It is shown that both models reproduce behavior consistent with lattice QCD. In particular, the Einstein–Maxwell-Dilaton-scalar system exhibits a first-order phase transition in the pure gauge sector, aligning with predictions from Yang–Mills theory. Based on these models, we construct a holographic model for neutron stars, incorporating leptons to satisfy electric charge neutrality, and examine the cold equation of state, the mass-radius relation, and tidal deformability of neutron stars. It is demonstrated that the Einstein–Maxwell-Dilaton-scalar system enables us to describe neutron star properties that meet current astrophysical constraints.
© The Author(s) 2025
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