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Article

Stable Up-Down Quark Matter Nuggets, Quark Star Crusts, and a New Family of White Dwarfs

1
School of Information Science and Engineering, NingboTech University, Ningbo 315100, China
2
School of Physics & Electrical Engineering, AnYang Normal University, AnYang 455000, China
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School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
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Theoretical Physics Center for Science Facilities, Institute of High Energy Physics, P.O. Box 918, Beijing 100049, China
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Synergetic Innovation Center for Quantum Effects and Application, Hunan Normal University, Changsha 410081, China
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School of Physics, Peking University, Beijing 100871, China
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Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing 100871, China
*
Authors to whom correspondence should be addressed.
Academic Editors: Elena Moretti and Francesco Longo
Galaxies 2021, 9(4), 70; https://doi.org/10.3390/galaxies9040070
Received: 30 July 2021 / Revised: 22 September 2021 / Accepted: 23 September 2021 / Published: 28 September 2021
(This article belongs to the Special Issue Gamma-Ray Burst Science in 2030)
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. View Full-Text
Keywords: quark matter; up-down quark nuggets; quark star crusts; white dwarfs quark matter; up-down quark nuggets; quark star crusts; white dwarfs
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MDPI and ACS Style

Wang, L.; Hu, J.; Xia, C.-J.; Xu, J.-F.; Peng, G.-X.; Xu, R.-X. Stable Up-Down Quark Matter Nuggets, Quark Star Crusts, and a New Family of White Dwarfs. Galaxies 2021, 9, 70. https://doi.org/10.3390/galaxies9040070

AMA Style

Wang L, Hu J, Xia C-J, Xu J-F, Peng G-X, Xu R-X. Stable Up-Down Quark Matter Nuggets, Quark Star Crusts, and a New Family of White Dwarfs. Galaxies. 2021; 9(4):70. https://doi.org/10.3390/galaxies9040070

Chicago/Turabian Style

Wang, Lang, Jian Hu, Cheng-Jun Xia, Jian-Feng Xu, Guang-Xiong Peng, and Ren-Xin Xu. 2021. "Stable Up-Down Quark Matter Nuggets, Quark Star Crusts, and a New Family of White Dwarfs" Galaxies 9, no. 4: 70. https://doi.org/10.3390/galaxies9040070

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