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International Journal of Modern Physics D最新文献

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Charged anisotropic compact stellar models under gravitational Decoupling Scheme 引力解耦方案下的带电各向异性致密恒星模型
4区 物理与天体物理
International Journal of Modern Physics D Pub Date : 2023-09-29 DOI: 10.1142/s0218271823500931
Kiran Pant, Pratibha Fuloria
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引用次数: 0
Foreword 前言
IF 2.2 4区 物理与天体物理
International Journal of Modern Physics D Pub Date : 2023-09-02 DOI: 10.1142/s0218271823020017
Dharam Vir Ahluwalia
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引用次数: 0
A viable f(R) gravity model without oscillations in the effective dark energy 有效暗能量无振荡的可行f(R)引力模型
4区 物理与天体物理
International Journal of Modern Physics D Pub Date : 2023-09-01 DOI: 10.1142/s0218271823500864
A. Oliveros
{"title":"A viable <i>f</i>(<i>R</i>) gravity model without oscillations in the effective dark energy","authors":"A. Oliveros","doi":"10.1142/s0218271823500864","DOIUrl":"https://doi.org/10.1142/s0218271823500864","url":null,"abstract":"In this study, we propose a reparametrization of a specific viable [Formula: see text] gravity model to represent it as a perturbation of the [Formula: see text]CDM model. The [Formula: see text] gravity model under consideration includes two parameters, [Formula: see text] and [Formula: see text], which control how close the proposed model can be to [Formula: see text]CDM, allowing for arbitrary proximity. Furthermore, it is shown that the Hu–Sawicki (HS) model is a limiting case of this reparametrized model. Following the existing literature, we also derive an analytical approximation for the expansion rate [Formula: see text], which shows an excellent agreement between this analytical approximation and the numerical solution over a wide range of redshifts for realistic values of the deviation parameter [Formula: see text]. By appropriately selecting values for the model parameters, we plot the cosmological parameters [Formula: see text], [Formula: see text], [Formula: see text] and [Formula: see text], as well as the statefinder quantities [Formula: see text], [Formula: see text], [Formula: see text] and [Formula: see text]. We find that their present values (at [Formula: see text]) are consistent with the observations from Planck 2018 and the values predicted by the [Formula: see text]CDM model. It is important to note that the examined cosmological and statefinder parameters do not exhibit significant oscillations of effective dark energy, which could lead to singular and unphysical solutions at high redshifts. This anomalous behavior has been avoided here by utilizing the approximate analytical solution for [Formula: see text]. Additionally, we conduct a detailed analysis of the evolution of matter density perturbations within the introduced [Formula: see text] gravity model. The results demonstrate that this viable [Formula: see text] gravity model is practically indistinguishable from the [Formula: see text]CDM model at the background level.","PeriodicalId":50307,"journal":{"name":"International Journal of Modern Physics D","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135349451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Stationary Observers in KERR-DE Sitter spacetimes KERR-DE Sitter时空中的静止观测者
IF 2.2 4区 物理与天体物理
International Journal of Modern Physics D Pub Date : 2023-08-30 DOI: 10.1142/s0218271823500840
M. Petrasek, J. Kovář, Z. Stuchlík
{"title":"Stationary Observers in KERR-DE Sitter spacetimes","authors":"M. Petrasek, J. Kovář, Z. Stuchlík","doi":"10.1142/s0218271823500840","DOIUrl":"https://doi.org/10.1142/s0218271823500840","url":null,"abstract":"","PeriodicalId":50307,"journal":{"name":"International Journal of Modern Physics D","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49031254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Measuring Gravitational shifts with Atomic Clocks 用原子钟测量引力位移
IF 2.2 4区 物理与天体物理
International Journal of Modern Physics D Pub Date : 2023-08-30 DOI: 10.1142/s0218271823420221
S. Agrawal
{"title":"Measuring Gravitational shifts with Atomic Clocks","authors":"S. Agrawal","doi":"10.1142/s0218271823420221","DOIUrl":"https://doi.org/10.1142/s0218271823420221","url":null,"abstract":"","PeriodicalId":50307,"journal":{"name":"International Journal of Modern Physics D","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41975979","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Gravity-induced entanglement as a probe of spacetime curvature 作为时空曲率探测器的引力诱导纠缠
IF 2.2 4区 物理与天体物理
International Journal of Modern Physics D Pub Date : 2023-08-25 DOI: 10.1142/s0218271823420208
Suddhasattwa Brahma, Abhinove Nagarajan Seenivasan
{"title":"Gravity-induced entanglement as a probe of spacetime curvature","authors":"Suddhasattwa Brahma, Abhinove Nagarajan Seenivasan","doi":"10.1142/s0218271823420208","DOIUrl":"https://doi.org/10.1142/s0218271823420208","url":null,"abstract":"","PeriodicalId":50307,"journal":{"name":"International Journal of Modern Physics D","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2023-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41847574","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Expansion free Spherical Anisotropic Solutions 无膨胀球面各向异性解
IF 2.2 4区 物理与天体物理
International Journal of Modern Physics D Pub Date : 2023-08-10 DOI: 10.1142/s0218271823500827
M. Z. Bhatti, Z. Yousaf, I. Sabir
{"title":"Expansion free Spherical Anisotropic Solutions","authors":"M. Z. Bhatti, Z. Yousaf, I. Sabir","doi":"10.1142/s0218271823500827","DOIUrl":"https://doi.org/10.1142/s0218271823500827","url":null,"abstract":"","PeriodicalId":50307,"journal":{"name":"International Journal of Modern Physics D","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2023-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43093797","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Physical quark star model with generalized logarithmic anisotropy 具有广义对数各向异性的物理夸克星模型
IF 2.2 4区 物理与天体物理
International Journal of Modern Physics D Pub Date : 2023-08-10 DOI: 10.1142/s0218271823500815
J. M. Mkenyeleye, M. Juma, J. Sunzu
{"title":"Physical quark star model with generalized logarithmic anisotropy","authors":"J. M. Mkenyeleye, M. Juma, J. Sunzu","doi":"10.1142/s0218271823500815","DOIUrl":"https://doi.org/10.1142/s0218271823500815","url":null,"abstract":"","PeriodicalId":50307,"journal":{"name":"International Journal of Modern Physics D","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2023-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48812385","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Quantum absorption properties of Kerr-Newman de Sitter black hole Kerr-Newman de Sitter黑洞的量子吸收特性
IF 2.2 4区 物理与天体物理
International Journal of Modern Physics D Pub Date : 2023-08-04 DOI: 10.1142/s0218271823500785
Chiging Lasa Polo, H. S. Singh
{"title":"Quantum absorption properties of Kerr-Newman de Sitter black hole","authors":"Chiging Lasa Polo, H. S. Singh","doi":"10.1142/s0218271823500785","DOIUrl":"https://doi.org/10.1142/s0218271823500785","url":null,"abstract":"","PeriodicalId":50307,"journal":{"name":"International Journal of Modern Physics D","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2023-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45599456","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Isotropization of symmetric teleparallel gravity with observational constraints 具有观测约束的对称远距引力的各向同性
IF 2.2 4区 物理与天体物理
International Journal of Modern Physics D Pub Date : 2023-08-04 DOI: 10.1142/s0218271823500773
S. Shekh, A. Husain, A. Dixit, S. Samdurkar
{"title":"Isotropization of symmetric teleparallel gravity with observational constraints","authors":"S. Shekh, A. Husain, A. Dixit, S. Samdurkar","doi":"10.1142/s0218271823500773","DOIUrl":"https://doi.org/10.1142/s0218271823500773","url":null,"abstract":"","PeriodicalId":50307,"journal":{"name":"International Journal of Modern Physics D","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2023-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41854857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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