https://doi.org/10.1140/epjc/s10052-025-14149-2
Regular Article - Theoretical Physics
Dynamical and thermodynamic crossovers in the supercritical region of a holographic superfluid model
1
Center for Gravitation and Astrophysics, Kunming University of Science and Technology, 650500, Kunming, China
2
Key Laboratory of Cosmology and Astrophysics (Liaoning), College of Sciences, Northeastern University, 110819, Shenyang, China
3
Wilczek Quantum Center, School of Physics and Astronomy, Shanghai Jiao Tong University, 200240, Shanghai, China
4
Shanghai Research Center for Quantum Sciences, 201315, Shanghai, China
a
niezy@kust.edu.cn
b
jfzhang@mail.neu.edu.cn
c
zhangxin@mail.neu.edu.cn
d
b.matteo@sjtu.edu.cn
Received:
24
November
2024
Accepted:
2
April
2025
Published online:
25
April
2025
Many physical systems, including classical fluids, present in their phase diagram the competition between two phases that are separated by a line of first-order phase transitions which terminates at a so-called critical point. Despite several proposals, in the supercritical region beyond the critical point, whether the two phases can still be distinguished and by which criterion remain open questions. In this work, we study the thermodynamics and linear dynamics of a holographic superfluid model with nonlinear potential terms in the supercritical region. We identify the presence of a dynamical crossover, akin to the liquid-like to gas-like Frenkel transition in supercritical fluids, and we define other separation lines of thermodynamic origin based on higher order derivatives of the free energy with respect to the charge density. Our results highlight the universal dynamical and thermodynamic features of supercritical systems from nuclear matter and classical fluids to superfluid systems.
© The Author(s) 2025
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