Traversable wormhole solutions utilizing the Karmarkar condition in f(R,G)gravity  

作　　者：Tayyaba Naz Adnan Malik M Z Bhatti M Kamran Asif Iffat Fayyaz 

机构地区：[1]National University of Computer and Emerging Sciences,Lahore Campus,Pakistan [2]School of Mathematical Sciences,Zhejiang Normal University,Jinhua,Zhejiang,China [3]Department of Mathematics,University of Management and Technology,Sialkot Campus,Lahore,Pakistan [4]Department of Mathematics,University of the Punjab,Quaid-i-Azam Campus,Lahore-54590,Pakistan

出　　处：《Communications in Theoretical Physics》2024年第12期113-126,共14页理论物理通讯(英文版)

基　　金：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。

摘　　要：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 Karmarkar condition,which creates wormhole geometry that meets the necessary conditions and connects two asymptotically flat areas of spacetime.The proposed study's main goal is to construct the wormhole structures by splitting the f(R,G)gravity model into two forms Firstly,we split the model into an exponential-like f(R)gravity model and a power law f(G)gravity model,and secondly,we consider the Starobinsky f(R)gravity model along with a power law f(G)gravity model.Besides,we address the feasibility of shape functions and the structural analysis of wormhole structures for specific models.These models are then confined to be compatible with current experimental evidence.Further,the energy conditions of the wormhole are geometrically probed,and it is proven that they adhere to the null energy conditions in areas close to the throat.Moreover,the fascinating aspect of this study involves conducting an examination and comparison of evolving wormhole geometries in the vicinity of the throat in our chosen models,utilizing two-and three-dimensional graphical representations.We observe that our shape function acquired through the Karmarkar technique yields validated wormhole configurations with even less exotic matter,correlating to the proper choice of f(R,G)gravity models and acceptable free parameter values.In summary,we conclude that our findings meet all the criteria for the existence of wormholes,affirming the viability and consistency of our study.

关 键 词：Wormhole Structures f(R G)gravity karmarkar condition shape function 

分 类 号：P131[天文地球—天体力学]