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Phase diagram and compact stars in a holographic QCD model

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arxiv 2006.09401 v2 pith:Q2MKK4ND submitted 2020-06-16 hep-th gr-qchep-ph

Luis A. H. Mamani , Cesar V. Flores , Vilson T. Zanchin This is my paper · ORCID
classification hep-thgr-qchep-ph
keywords equationmodelstateholographicstarsastrophysicalcompactdiagram
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A holographic model is used to investigate the thermodynamics and the phase diagram of a heavy quarks system. From such a model we obtain an equation of state and explore its applicability in astrophysical conditions. For this objective, we work in the context of the Einstein-Maxwell-Dilaton (EMD) holographic model for quantum chromodynamics (QCD). At first, we show the existence of a critical point where the first-order transitions line ends, later on, we calculated an analytic expression for the equation of state. Additionally, with the aim of investigating the global properties of compact stars, such as the total gravitational mass and radius, the equation of state is used to solve the Tolman-Oppenheimer-Volkov (TOV) equations for stellar structure. The numerical results show that our equation of state is able to reproduce the expected behavior of hybrid stars. Our main conclusion is that, by using an equation of state emerging in the framework of the EMD holographic model for QCD, it is possible to obtain quark matter properties and that it is also possible to extend the procedure to astrophysical applications.

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Cited by 2 Pith papers

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    In a hardwall AdS/QCD model with phenomenological boundary conditions, both baryonic and quark condensates dominate the low-temperature phase diagram of dense nuclear matter.

  2. Transport coefficients and quasinormal modes in Einstein-dilaton holographic QCD

    hep-th 2025-07 conditional novelty 5.0 of 10

    For the quadratic-dilaton Einstein-dilaton holographic model, the vector-sector dispersion relation gives η/s = 1/(4π), and the Kubo-formula bulk viscosity matches JETSCAPE data within a fitted range of the dilaton pa...

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