Upper bound on the speed of sound in nuclear matter from transport
We point out that there is an upper bound on the speed of sound squared given by c s 2 ≤ 0.781 valid for all known systems described by relativistic transient hydrodynamics where calculations of certain ratios of hydrodynamic transport coefficients can be performed from first principles. Assuming this bound is valid for ultradense matter implies that the maximum mass of isolated (non-rotating) neutron stars cannot be larger than 2.7 solar masses.
Authors
- Maurício Hippert (ORCID: https://orcid.org/0000-0001-5802-3908)
- Paul Romatschke (ORCID: https://orcid.org/0000-0003-4380-1986)
- Jorge Noronha
Institutions
- University of Illinois Urbana-Champaign (US)
- University of Colorado Boulder (US)
- Universidade do Estado do Rio de Janeiro (BR)
Publication Details
- Journal
- Physics Letters B
- Published
- 2024-12-10
- DOI
- https://doi.org/10.1016/j.physletb.2024.139184
- Citations
- 11
- Primary Topic
- Quantum, superfluid, helium dynamics
- Type
- article
- Field-Weighted Citation Impact
- 3.71
Funders
- National Science Foundation
- Universidade do Estado do Rio de Janeiro
- Office of Science