{"title":"广义κ(R,T)-函数中的守恒虫洞","authors":"Ksh. Newton Singh , G.R.P. Teruel , S.K. Maurya , Tanmoy Chowdhury , Farook Rahaman","doi":"10.1016/j.jheap.2024.09.009","DOIUrl":null,"url":null,"abstract":"<div><div>We present an exhaustive study of wormhole configurations in <span><math><mi>κ</mi><mo>(</mo><mi>R</mi><mo>,</mo><mi>T</mi><mo>)</mo></math></span> gravity with linear and non-linear functions. The model assumed Morris-Thorne spacetime where the redshift and shape functions linked with the matter contain and geometry of the spacetime through non-covariant conservation equation of the stress-energy tensor. The first solution was explored assuming a constant redshift function that leads to a wormhole (WH) which is asymptotically non-flat. The remaining solutions were explored in two cases. Firstly, assuming a linear equation of state <span><math><mi>p</mi><mo>(</mo><mi>r</mi><mo>)</mo><mo>=</mo><mi>ω</mi><mi>ρ</mi><mo>(</mo><mi>r</mi><mo>)</mo></math></span> along with different forms of <span><math><mi>κ</mi><mo>(</mo><mi>R</mi><mo>,</mo><mi>T</mi><mo>)</mo></math></span>-function. This proved enough to derive a shape function of the form <span><math><mi>b</mi><mo>(</mo><mi>r</mi><mo>)</mo><mo>=</mo><msub><mrow><mi>r</mi></mrow><mrow><mn>0</mn></mrow></msub><msup><mrow><mo>(</mo><mfrac><mrow><msub><mrow><mi>r</mi></mrow><mrow><mn>0</mn></mrow></msub></mrow><mrow><mi>r</mi></mrow></mfrac><mo>)</mo></mrow><mrow><mn>1</mn><mo>/</mo><mi>ω</mi></mrow></msup></math></span>. Secondly, by assuming specific choices of the shape function consistent with the wormhole configuration requirements. All the solutions fulfill flare-out condition, asymptotically flat and supported by phantom energy. Further, the embedding surface and its revolution has been generated using numerical method to see how the length of the throat is affected of the coupling parameters through <span><math><mi>κ</mi><mo>(</mo><mi>R</mi><mo>,</mo><mi>T</mi><mo>)</mo></math></span> function. At the end, we have also calculated the average null energy condition, which is satisfied by all the WH models signifying minimum exotic matter is required to open the WH throats.</div></div>","PeriodicalId":54265,"journal":{"name":"Journal of High Energy Astrophysics","volume":"44 ","pages":"Pages 132-145"},"PeriodicalIF":10.2000,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Conservative wormholes in generalized κ(R,T)- function\",\"authors\":\"Ksh. Newton Singh , G.R.P. Teruel , S.K. Maurya , Tanmoy Chowdhury , Farook Rahaman\",\"doi\":\"10.1016/j.jheap.2024.09.009\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>We present an exhaustive study of wormhole configurations in <span><math><mi>κ</mi><mo>(</mo><mi>R</mi><mo>,</mo><mi>T</mi><mo>)</mo></math></span> gravity with linear and non-linear functions. The model assumed Morris-Thorne spacetime where the redshift and shape functions linked with the matter contain and geometry of the spacetime through non-covariant conservation equation of the stress-energy tensor. The first solution was explored assuming a constant redshift function that leads to a wormhole (WH) which is asymptotically non-flat. The remaining solutions were explored in two cases. Firstly, assuming a linear equation of state <span><math><mi>p</mi><mo>(</mo><mi>r</mi><mo>)</mo><mo>=</mo><mi>ω</mi><mi>ρ</mi><mo>(</mo><mi>r</mi><mo>)</mo></math></span> along with different forms of <span><math><mi>κ</mi><mo>(</mo><mi>R</mi><mo>,</mo><mi>T</mi><mo>)</mo></math></span>-function. This proved enough to derive a shape function of the form <span><math><mi>b</mi><mo>(</mo><mi>r</mi><mo>)</mo><mo>=</mo><msub><mrow><mi>r</mi></mrow><mrow><mn>0</mn></mrow></msub><msup><mrow><mo>(</mo><mfrac><mrow><msub><mrow><mi>r</mi></mrow><mrow><mn>0</mn></mrow></msub></mrow><mrow><mi>r</mi></mrow></mfrac><mo>)</mo></mrow><mrow><mn>1</mn><mo>/</mo><mi>ω</mi></mrow></msup></math></span>. Secondly, by assuming specific choices of the shape function consistent with the wormhole configuration requirements. All the solutions fulfill flare-out condition, asymptotically flat and supported by phantom energy. Further, the embedding surface and its revolution has been generated using numerical method to see how the length of the throat is affected of the coupling parameters through <span><math><mi>κ</mi><mo>(</mo><mi>R</mi><mo>,</mo><mi>T</mi><mo>)</mo></math></span> function. At the end, we have also calculated the average null energy condition, which is satisfied by all the WH models signifying minimum exotic matter is required to open the WH throats.</div></div>\",\"PeriodicalId\":54265,\"journal\":{\"name\":\"Journal of High Energy Astrophysics\",\"volume\":\"44 \",\"pages\":\"Pages 132-145\"},\"PeriodicalIF\":10.2000,\"publicationDate\":\"2024-09-27\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of High Energy Astrophysics\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2214404824000910\",\"RegionNum\":4,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ASTRONOMY & ASTROPHYSICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of High Energy Astrophysics","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2214404824000910","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ASTRONOMY & ASTROPHYSICS","Score":null,"Total":0}
Conservative wormholes in generalized κ(R,T)- function
We present an exhaustive study of wormhole configurations in gravity with linear and non-linear functions. The model assumed Morris-Thorne spacetime where the redshift and shape functions linked with the matter contain and geometry of the spacetime through non-covariant conservation equation of the stress-energy tensor. The first solution was explored assuming a constant redshift function that leads to a wormhole (WH) which is asymptotically non-flat. The remaining solutions were explored in two cases. Firstly, assuming a linear equation of state along with different forms of -function. This proved enough to derive a shape function of the form . Secondly, by assuming specific choices of the shape function consistent with the wormhole configuration requirements. All the solutions fulfill flare-out condition, asymptotically flat and supported by phantom energy. Further, the embedding surface and its revolution has been generated using numerical method to see how the length of the throat is affected of the coupling parameters through function. At the end, we have also calculated the average null energy condition, which is satisfied by all the WH models signifying minimum exotic matter is required to open the WH throats.
期刊介绍:
The journal welcomes manuscripts on theoretical models, simulations, and observations of highly energetic astrophysical objects both in our Galaxy and beyond. Among those, black holes at all scales, neutron stars, pulsars and their nebula, binaries, novae and supernovae, their remnants, active galaxies, and clusters are just a few examples. The journal will consider research across the whole electromagnetic spectrum, as well as research using various messengers, such as gravitational waves or neutrinos. Effects of high-energy phenomena on cosmology and star-formation, results from dedicated surveys expanding the knowledge of extreme environments, and astrophysical implications of dark matter are also welcomed topics.