https://doi.org/10.1140/epjc/s10052-025-14150-9
Regular Article - Theoretical Physics
Impact of dark matter on strange quark stars described by different quark models
1
School of Physics and Electronic Science, East China Normal University, 200241, Shanghai, China
2
Xingzhi College, Zhejiang Normal University, 321004, Jinhua, China
Received:
23
December
2024
Accepted:
1
April
2025
Published online:
17
April
2025
Dark matter is hypothesized to interact with ordinary matter solely through gravity and may be present in compact objects such as strange quark stars. We treat strange quark stars admixed with dark matter as two-fluid systems to investigate the potential effects of dark matter on strange quark stars. Quark matter is described by the quasiparticle model and the extended MIT bag model for comparison. Dark matter is treated as asymmetric, self-interacting, and composed of massive fermionic particles. The two-fluid Tolman–Oppenheimer–Volkoff (TOV) equations are employed to solve for specific stellar properties. Our analysis yields relations between central energy density and mass, radius and mass, as well as tidal deformability and mass. The calculated curves generally align with observational data. In particular, we find that the pattern in which fermionic asymmetric dark matter affects the properties of strange quark stars may not be influenced by the equation of state (EOS) of strange quark matter.
© The Author(s) 2025
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