Impact of Strange Quark Matter Nuggets on Pycnonuclear Reaction Rates in the Crusts of Neutron Stars

Details Impact of Strange Quark Matter Nuggets on Pycnonuclear Reaction Rates in the Crusts of Neutron Stars Impact of Strange Quark Matter Nuggets on Pycnonuclear Reaction Rates in the Crusts of Neutron Stars

2009-06-12

arxiv.org/abs/0906.2427v1

Phys.Rev.C80:015804,2009

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

12 pages, 9 figures. Accepted for publication in The Physical Review C

Scientific paper

10.1103/PhysRevC.80.015804

This paper presents an investigation into the pycnonuclear reaction rates in dense crustal matter of neutron stars contaminated with strange quark matter nuggets. The presence of such nuggets in the crustal matter of neutron stars would be a natural consequence if Witten's strange quark matter hypothesis is correct. The methodology presented in this paper is a recreation of a recent representation of nuclear force interactions embedded within pycnonuclear reaction processes. The study then extends the methodology to incorporate distinctive theoretical characteristics of strange quark matter nuggets, like their low charge-per-baryon ratio, and then assesses their effects on the pycnonuclear reaction rates. Particular emphasis is put on the impact of color superconductivity on the reaction rates. Depending on whether or not quark nuggets are in this novel state of matter, their electric charge properties vary drastically which turns out to have a dramatic effect on the pycnonuclear reaction rates. Future nuclear fusion network calculations may thus have the potential to shed light on the existence of strange quark matter nuggets and on whether or not they are in a color superconducting state, as suggested by QCD.

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