Stable Up-Down Quark Matter Nuggets, Quark Star Crusts, and a New Family of White Dwarfs
The possible existence of stable up-down quark matter (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>u</mi><mi>d</mi></mrow></semantics></math></inline-fo...
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MDPI AG
2021-09-01
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| Series: | Galaxies |
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| Online Access: | https://www.mdpi.com/2075-4434/9/4/70 |
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| author | Lang Wang Jian Hu Cheng-Jun Xia Jian-Feng Xu Guang-Xiong Peng Ren-Xin Xu |
| author_facet | Lang Wang Jian Hu Cheng-Jun Xia Jian-Feng Xu Guang-Xiong Peng Ren-Xin Xu |
| author_sort | Lang Wang |
| collection | DOAJ |
| description | The possible existence of stable up-down quark matter (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>u</mi><mi>d</mi></mrow></semantics></math></inline-formula>QM) was recently proposed, and it was shown that the properties of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>u</mi><mi>d</mi></mrow></semantics></math></inline-formula>QM stars are consistent with various pulsar observations. In this work we investigate the stability of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>u</mi><mi>d</mi></mrow></semantics></math></inline-formula>QM 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 <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>u</mi><mi>d</mi></mrow></semantics></math></inline-formula>QM nuggets exists in quark stars. A new family of white dwarfs comprised entirely of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>u</mi><mi>d</mi></mrow></semantics></math></inline-formula>QM nuggets and electrons were also obtained, where the maximum mass approaches to the Chandrasekhar limit. |
| first_indexed | 2024-03-10T04:04:38Z |
| format | Article |
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| institution | Directory Open Access Journal |
| issn | 2075-4434 |
| language | English |
| last_indexed | 2024-03-10T04:04:38Z |
| publishDate | 2021-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Galaxies |
| spelling | doaj.art-c40c39a9ab1f4aa0bfe6e199b9714e942023-11-23T08:25:41ZengMDPI AGGalaxies2075-44342021-09-01947010.3390/galaxies9040070Stable Up-Down Quark Matter Nuggets, Quark Star Crusts, and a New Family of White DwarfsLang Wang0Jian Hu1Cheng-Jun Xia2Jian-Feng Xu3Guang-Xiong Peng4Ren-Xin Xu5School of Information Science and Engineering, NingboTech University, Ningbo 315100, ChinaSchool of Information Science and Engineering, NingboTech University, Ningbo 315100, ChinaSchool of Information Science and Engineering, NingboTech University, Ningbo 315100, ChinaSchool of Physics & Electrical Engineering, AnYang Normal University, AnYang 455000, ChinaSchool of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, ChinaSchool of Physics, Peking University, Beijing 100871, ChinaThe possible existence of stable up-down quark matter (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>u</mi><mi>d</mi></mrow></semantics></math></inline-formula>QM) was recently proposed, and it was shown that the properties of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>u</mi><mi>d</mi></mrow></semantics></math></inline-formula>QM stars are consistent with various pulsar observations. In this work we investigate the stability of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>u</mi><mi>d</mi></mrow></semantics></math></inline-formula>QM 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 <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>u</mi><mi>d</mi></mrow></semantics></math></inline-formula>QM nuggets exists in quark stars. A new family of white dwarfs comprised entirely of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>u</mi><mi>d</mi></mrow></semantics></math></inline-formula>QM nuggets and electrons were also obtained, where the maximum mass approaches to the Chandrasekhar limit.https://www.mdpi.com/2075-4434/9/4/70quark matterup-down quark nuggetsquark star crustswhite dwarfs |
| spellingShingle | Lang Wang Jian Hu Cheng-Jun Xia Jian-Feng Xu Guang-Xiong Peng Ren-Xin Xu Stable Up-Down Quark Matter Nuggets, Quark Star Crusts, and a New Family of White Dwarfs Galaxies quark matter up-down quark nuggets quark star crusts white dwarfs |
| title | Stable Up-Down Quark Matter Nuggets, Quark Star Crusts, and a New Family of White Dwarfs |
| title_full | Stable Up-Down Quark Matter Nuggets, Quark Star Crusts, and a New Family of White Dwarfs |
| title_fullStr | Stable Up-Down Quark Matter Nuggets, Quark Star Crusts, and a New Family of White Dwarfs |
| title_full_unstemmed | Stable Up-Down Quark Matter Nuggets, Quark Star Crusts, and a New Family of White Dwarfs |
| title_short | Stable Up-Down Quark Matter Nuggets, Quark Star Crusts, and a New Family of White Dwarfs |
| title_sort | stable up down quark matter nuggets quark star crusts and a new family of white dwarfs |
| topic | quark matter up-down quark nuggets quark star crusts white dwarfs |
| url | https://www.mdpi.com/2075-4434/9/4/70 |
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