Reconciling GW170817 and GW190814 with a Nonmonotonic Sound-Speed Equation of State
Abstract
We show that the GW170817-GW190814 tension can be reconciled within General Relativity by a structured causal EoS basin found with a Constrained Evolutionary TOV Discovery pipeline (CETD). The basin contains ~1.4x104 unique EoS with Mmax = 2.3-2.8 Msun, R1.4 = 11.97-12.29 km, Lambda1.4 <= 580, and double-peaked sound speeds reaching cs2/c2 = 0.86-0.99.
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