Stable Up-Down Quark Matter Nuggets, Quark Star Crusts, and a New Family of White Dwarfs
Galaxies(2021)
摘要
The possible existence of stable up-down quark matter (udQM) was recently proposed, and it was shown that the properties of udQM stars are consistent with various pulsar observations. In this work we investigate the stability of udQM nuggets and found at certain size those objects are more stable than others if a large symmetry energy and a small surface tension were adopted. In such cases, a crust made of udQM nuggets exists in quark stars. A new family of white dwarfs comprised entirely of udQM nuggets and electrons were also obtained, where the maximum mass approaches to the Chandrasekhar limit.
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关键词
quark matter,up-down quark nuggets,quark star crusts,white dwarfs
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