Kinetic theory and the speed of sound in dense matter
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arXiv
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866908731069956096 |
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| author | Marczenko, Michał |
| author_facet | Marczenko, Michał |
| contents | We discuss a constraint on the speed of sound, $c_s^2$, derived from relativistic kinetic theory and show how it can be expressed in terms of the average sound speed, $\langle c_s^2 \rangle$. This reformulation highlights the interplay between instantaneous and integrated stiffness of the equation of state and allows the kinetic-theory bound to be visualized as a restriction in the $c_s^2$-$\langle c_s^2 \rangle $ plane. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_19770 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Kinetic theory and the speed of sound in dense matter Marczenko, Michał Nuclear Theory High Energy Astrophysical Phenomena We discuss a constraint on the speed of sound, $c_s^2$, derived from relativistic kinetic theory and show how it can be expressed in terms of the average sound speed, $\langle c_s^2 \rangle$. This reformulation highlights the interplay between instantaneous and integrated stiffness of the equation of state and allows the kinetic-theory bound to be visualized as a restriction in the $c_s^2$-$\langle c_s^2 \rangle $ plane. |
| title | Kinetic theory and the speed of sound in dense matter |
| topic | Nuclear Theory High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2512.19770 |