تقرير
Bounds on the minimum sound speed above neutron star densities
| العنوان: | Bounds on the minimum sound speed above neutron star densities |
|---|---|
| المؤلفون: | Zhou, Dake |
| سنة النشر: | 2024 |
| المجموعة: | Astrophysics General Relativity and Quantum Cosmology High Energy Physics - Phenomenology High Energy Physics - Theory Nuclear Theory |
| مصطلحات موضوعية: | Nuclear Theory, Astrophysics - High Energy Astrophysical Phenomena, General Relativity and Quantum Cosmology, High Energy Physics - Phenomenology, High Energy Physics - Theory |
| الوصف: | We show that the existence of massive neutron stars and asymptotic freedom of QCD place robust upper bounds on the lowest sound speed of the ultra-dense matter unattainable in neutron stars. Our approach does not rely on explicitly representing the equation of state in the density range $\sim 2-40 n_0$, and does not require probabilistic interpretations. The upper limit decreases rapidly when the maximum mass of neutron stars is greater than about $2.5M_\odot$. Discovery of $\sim 3 M_\odot$ neutron stars would strongly support first-order phase transitions at high baryon densities Comment: 5 pages, 4 figures + 4 appendices |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2408.16738 |
| رقم الأكسشن: | edsarx.2408.16738 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |