利用 Karmarkar 方法研究带电虫洞结构的命运

IF 1.9 4区 物理与天体物理 Q2 ASTRONOMY & ASTROPHYSICS
Iffat Fayyaz , Tayyaba Naz , Adnan Malik
{"title":"利用 Karmarkar 方法研究带电虫洞结构的命运","authors":"Iffat Fayyaz ,&nbsp;Tayyaba Naz ,&nbsp;Adnan Malik","doi":"10.1016/j.newast.2024.102255","DOIUrl":null,"url":null,"abstract":"<div><p>The purpose of this study is to elaborate on the Morris–Thorne wormhole notion by creating a detailed model of a charged wormhole shape function. The classical embedding theory, which has played a significant role in the general theory of relativity, accomplishes this objective. Here, we assume redshift function along with charge i.e. <span><math><mrow><mi>ψ</mi><mrow><mo>(</mo><mi>r</mi><mo>,</mo><msup><mrow><mi>Q</mi></mrow><mrow><mn>2</mn></mrow></msup><mo>)</mo></mrow><mo>=</mo><mi>L</mi><mi>o</mi><mi>g</mi><mrow><mo>[</mo><mn>1</mn><mo>+</mo><mfrac><mrow><msup><mrow><mi>Q</mi></mrow><mrow><mn>2</mn></mrow></msup></mrow><mrow><msup><mrow><mi>r</mi></mrow><mrow><mn>2</mn></mrow></msup></mrow></mfrac><mo>]</mo></mrow></mrow></math></span> and <span><math><mrow><mi>Q</mi><mrow><mo>(</mo><mi>r</mi><mo>)</mo></mrow><mo>=</mo><mi>ξ</mi><msqrt><mrow><mi>r</mi></mrow></msqrt></mrow></math></span>. For this particular choice, the surface redshift function remains positive and finite everywhere even for the larger range of radial coordinate <span><math><mi>r</mi></math></span>. In wormhole geometry, the violation of Null energy condition have a crucial role which leads to the exotic matter. We examined our solutions through energy bounds (Null, Weak and Strong energy bounds) to check their stable state and its viability. Interestingly, in present work we analyze that the presence of electric charge amplify the results and provides the traversable charged wormhole solutions without exotic matter near the throat in the context of general theory of relativity.</p></div>","PeriodicalId":54727,"journal":{"name":"New Astronomy","volume":null,"pages":null},"PeriodicalIF":1.9000,"publicationDate":"2024-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Fate of charged wormhole structures utilizing Karmarkar approach\",\"authors\":\"Iffat Fayyaz ,&nbsp;Tayyaba Naz ,&nbsp;Adnan Malik\",\"doi\":\"10.1016/j.newast.2024.102255\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The purpose of this study is to elaborate on the Morris–Thorne wormhole notion by creating a detailed model of a charged wormhole shape function. The classical embedding theory, which has played a significant role in the general theory of relativity, accomplishes this objective. Here, we assume redshift function along with charge i.e. <span><math><mrow><mi>ψ</mi><mrow><mo>(</mo><mi>r</mi><mo>,</mo><msup><mrow><mi>Q</mi></mrow><mrow><mn>2</mn></mrow></msup><mo>)</mo></mrow><mo>=</mo><mi>L</mi><mi>o</mi><mi>g</mi><mrow><mo>[</mo><mn>1</mn><mo>+</mo><mfrac><mrow><msup><mrow><mi>Q</mi></mrow><mrow><mn>2</mn></mrow></msup></mrow><mrow><msup><mrow><mi>r</mi></mrow><mrow><mn>2</mn></mrow></msup></mrow></mfrac><mo>]</mo></mrow></mrow></math></span> and <span><math><mrow><mi>Q</mi><mrow><mo>(</mo><mi>r</mi><mo>)</mo></mrow><mo>=</mo><mi>ξ</mi><msqrt><mrow><mi>r</mi></mrow></msqrt></mrow></math></span>. For this particular choice, the surface redshift function remains positive and finite everywhere even for the larger range of radial coordinate <span><math><mi>r</mi></math></span>. In wormhole geometry, the violation of Null energy condition have a crucial role which leads to the exotic matter. We examined our solutions through energy bounds (Null, Weak and Strong energy bounds) to check their stable state and its viability. Interestingly, in present work we analyze that the presence of electric charge amplify the results and provides the traversable charged wormhole solutions without exotic matter near the throat in the context of general theory of relativity.</p></div>\",\"PeriodicalId\":54727,\"journal\":{\"name\":\"New Astronomy\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.9000,\"publicationDate\":\"2024-05-25\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"New Astronomy\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1384107624000691\",\"RegionNum\":4,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ASTRONOMY & ASTROPHYSICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"New Astronomy","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1384107624000691","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ASTRONOMY & ASTROPHYSICS","Score":null,"Total":0}
引用次数: 0

摘要

本研究的目的是通过创建带电虫洞形状函数的详细模型来阐述莫里斯-索恩虫洞概念。在广义相对论中发挥了重要作用的经典嵌入理论可以实现这一目标。在这里,我们假设红移函数和电荷,即ψ(r,Q2)=Log[1+Q2r2]和 Q(r)=ξr。在虫洞几何中,违反无效能量条件是导致奇异物质产生的关键因素。我们通过能量边界(空能量边界、弱能量边界和强能量边界)检验了我们的解决方案,以检查其稳定状态及其可行性。有趣的是,在目前的工作中,我们分析了电荷的存在会放大结果,并在广义相对论的背景下提供了可穿越的带电虫洞解决方案,而在咽喉附近没有奇异物质。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Fate of charged wormhole structures utilizing Karmarkar approach

The purpose of this study is to elaborate on the Morris–Thorne wormhole notion by creating a detailed model of a charged wormhole shape function. The classical embedding theory, which has played a significant role in the general theory of relativity, accomplishes this objective. Here, we assume redshift function along with charge i.e. ψ(r,Q2)=Log[1+Q2r2] and Q(r)=ξr. For this particular choice, the surface redshift function remains positive and finite everywhere even for the larger range of radial coordinate r. In wormhole geometry, the violation of Null energy condition have a crucial role which leads to the exotic matter. We examined our solutions through energy bounds (Null, Weak and Strong energy bounds) to check their stable state and its viability. Interestingly, in present work we analyze that the presence of electric charge amplify the results and provides the traversable charged wormhole solutions without exotic matter near the throat in the context of general theory of relativity.

求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
New Astronomy
New Astronomy 地学天文-天文与天体物理
CiteScore
4.00
自引率
10.00%
发文量
109
审稿时长
13.6 weeks
期刊介绍: New Astronomy publishes articles in all fields of astronomy and astrophysics, with a particular focus on computational astronomy: mathematical and astronomy techniques and methodology, simulations, modelling and numerical results and computational techniques in instrumentation. New Astronomy includes full length research articles and review articles. The journal covers solar, stellar, galactic and extragalactic astronomy and astrophysics. It reports on original research in all wavelength bands, ranging from radio to gamma-ray.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信