PreprintCC BY 4.0arXiv
Quark deconfinement as a natural trigger of Type-I critical collapse: black holes from neutron stars deemed stable
Abstract
Spherically symmetric general-relativistic simulations show that a first-order hadron--quark phase transition can collapse radially stable neutron stars into black holes, even when a stable hybrid star of the same baryon mass exists. The dynamical threshold lies 0.12 M⊙ in baryon mass below the static one, so black holes can be lighter than the heaviest stable star. The threshold is a Type-I critical point: near it, the star lingers at an unstable hybrid star of equal baryon mass for a time set by that star's unstable mode. The effect persists within a narrower window for finite conversion rates.
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BibTeX
@misc{borthakur2026quark,
title = {{Quark deconfinement as a natural trigger of Type-I critical collapse: black holes from neutron stars deemed stable}},
author = {Hrishikesh Borthakur and Ritam Mallick},
howpublished = {arXiv},
year = {2026},
month = nov,
doi = {10.48550/arxiv.2611.04679},
eprint = {2611.04679},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2611.04679},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Quark deconfinement as a natural trigger of Type-I critical collapse: black holes from neutron stars deemed stable
AU - Hrishikesh Borthakur
AU - Ritam Mallick
PY - 2026
DA - 2026/11/03
PB - arXiv
DO - 10.48550/arxiv.2611.04679
UR - https://arxiv.org/abs/2611.04679
AB - Spherically symmetric general-relativistic simulations show that a first-order hadron--quark phase transition can collapse radially stable neutron stars into black holes, even when a stable hybrid star of the same baryon mass exists. The dynamical threshold lies 0.12 M_⊙ in baryon mass below the static one, so black holes can be lighter than the heaviest stable star. The threshold is a Type-I critical point: near it, the star lingers at an unstable hybrid star of equal baryon mass for a time set by that star's unstable mode. The effect persists within a narrower window for finite conversion rates.
ER -