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CONDITION: 作品数：1360被引量：2041H指数：15; 导出分析报告; 相关领域：理学更多>>; 相关作者：顾国华宋增民郭强李夏张天骄更多>>; 相关机构：东南大学北京理工大学中国科学院南京信息工程大学更多>>; 相关期刊：更多>>; 相关基金：国家自然科学基金国家重点基础研究发展计划中国博士后科学基金国家高技术研究发展计划更多>>

On the transverse-traceless gauge condition when matter is presented: 《Communications in Theoretical Physics》2025年第3期94-100,共7页Yadong Xue Xiaokai He Zhoujian Cao; supported in part by the National Key Research and Development Program of China Grant No.2021YFC2203001;in part by the NSFC(Grant Nos.11920101003,12021003 and 12005016);supported by‘the Fundamental Research Funds for the Central Universities’of Beijing Normal University;supported by the NSF of Hunan province(Grant No.2023JJ30179)。; The transverse-traceless gauge condition is an important concept in the theory of gravitational waves.It is well known that a vacuum is one of the key conditions to guarantee the existence of the transverse-traceless ...; 关键词：gravitational wave transverse-traceless gauge condition

Traversable wormhole solutions utilizing the Karmarkar condition in f(R,G)gravity: 《Communications in Theoretical Physics》2024年第12期113-126,共14页Tayyaba Naz Adnan Malik M Z Bhatti M Kamran Asif Iffat Fayyaz; National University of Computer and Emerging Sciences(NUCES)for funding support through research reward programme;the Grant No.YS304023912 to support his Postdoctoral Fellowship at Zhejiang Normal University,China。; The main objective of this paper is to reveal the evolving traversable wormhole solutions in the context of modified f(R,G)gravity,which affects the gravitational interaction.These results are derived by applying the ...; 关键词：Wormhole Structures f(R G)gravity karmarkar condition shape function

Comprehensive analysis of relativistic embedded class-I exponential compact spheres in f(R,φ)gravity via Karmarkar condition被引量：1: 《Communications in Theoretical Physics》2023年第10期100-110,共11页Zoya Asghar Adnan Malik M Farasat Shamir Fatemah Mofarreh; the Grant No.YS304023912 to support his Postdoctoral Fellowship at Zhejiang Normal University,China;Princess Nourah bint Abdulrahman University Researchers Supporting Project number(PNURSP2023R27),Princess Nourah bint Abdulrahman University,Riyadh,Saudi Arabia。; In this article,we use the prominent Karmarkar condition to investigate some novel features of astronomical objects in the f(R,φ)gravity;R andφrepresent the Ricci curvature and the scalar field,respectively.It is wo...; 关键词：stellar structures metric potentials f(R φ)theory of gravity Karmarkar condition

A charged star with geometric Karmarkar condition: 《Communications in Theoretical Physics》2023年第8期139-149,共11页Gabino Estevez-Delgado Joaquin Estevez-Delgado Rafael Soto-Espitia Antonio Rendón Romero Jorge Mauricio Paulin-Fuentes; In this paper,we analyse an analytical solution of the Einstein–Maxwell field equations that considers matter with anisotropic pressures in a static and spherically symmetric geometry.We report the manner in which we...; 关键词：general relativity exact solutions anisotropic fluid Karmarkar condition

A family of solutions of the time–space fractional longitudinal wave equation: 《Communications in Theoretical Physics》2023年第7期81-85,共5页Jian-Gen Liu Yi-Ying Feng; supported by the Yue-Qi Scholar of the China University of Mining and Technology(No.102504180004)。; In this article,we have studied a nonlinear time–space fractional longitudinal wave equation in the context of the conformable fractional derivative.Through the soliton ansatz method and a direct integration approach...; 关键词：time-space fractional longitudinal wave equation conformable fractional derivative symmetry condition

Relativistic models of anisotropic superdense star in the regime of Karmarkar's condition: 《Communications in Theoretical Physics》2023年第2期168-179,共12页Bikram Keshari Parida Shreya Majumder Shyam Das Koushik Chakraborty Farook Rahaman; We obtained a new class of solutions for a relativistic anisotropic compact star by utilizing the Karmarkar embedding condition.To obtain the closed-form solution a suitable form of one of the gravitational potentials...; 关键词：anisotropic compact star embedding class one Karmarkar’s condition

Investigation of Ti6Al4V and AA7075 alloy embedded nanofluid flow over longitudinal porous fin in the presence of internal heat generation and convective condition被引量：1: 《Communications in Theoretical Physics》2020年第2期23-29,共7页G Sowmya B J Gireesha S Sindhu B C Prasannakumara; The thermal attributes of porous fin due to radiation and natural convection have been carried out in the presence of nanofluid flow.The geometry of the fin taken for the analysis is rectangular profiled longitudinal ...; 关键词：alloys NANOFLUID POROUS FIN HEAT transfer analysis CONVECTIVE CONDITION internal HEAT generation

Orthonormality of Volkov Solutions and the Suffcient Condition: 《Communications in Theoretical Physics》2019年第10期1179-1186,共8页Hao Wang Ming Zhong Long-Fei Gan; Supported in part by the National Natural Science Foundation of China under Grants Nos.11475258,11205242,and 11675263; We present a simple demonstration on the orthonormality of Volkov solutions with emphasizing on the suffcient condition to the orthonormality. Properly aligning the external electromagnetic wave along the third-axis, ...; 关键词：Volkov SOLUTIONS orthonormality INTENSE FIELD QED

Lorentz Generators for the Maxwell Field and Gauge Fixing: 《Communications in Theoretical Physics》2019年第4期403-409,共7页V.Debierre; We propose a direct derivation of the Lorentz generators for the four-potential of electrodynamics on the basis of Wigner's theorem. The derivation relies on a study of the behaviour of polarisation vectors under k-sp...; 关键词：VECTOR potential LORENTZ generators polarisation VECTORS GAUGE CONDITION

A New Calculation of Rotational Bands in Alpha-Cluster Nuclei: 《Communications in Theoretical Physics》2018年第7期67-70,共4页N.Roshanbakht M.R.Shojaei; One of the cluster behaviors observed in light nuclei such as20 Ne and44 Ti is the presence of an alpha particle rotating around a double magic number core. In this work, a theoretical method is used for investigation...; 关键词：cluster model rotational band nuclear potential Wildermuth condition

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