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On the existence and stability of traversable wormhole solutions with novel shapefunctions in the framework of F(R,L_(m))gravity

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Communications in Theoretical Physics 2024年第5期76卷 114-127页

作者： Sourav Chaudhary Jitendra Kumar S K Maurya Sweeti Kiroriwal Abdul Aziz Department of Mathematics Central University of HaryanaJant-PaliMahendergarhIndia Department of Mathematical and Physical Sciences College of Arts and ScienceUniversity of NizwaP.O.Box 33Nizwa 616Oman

In this work,we have explored wormhole(WH)solutions in F(R,L_(m))gravity by assuming the Morris-Thorne WH metric and F(R,Lm)=R/2+(1+γR)L_(m),whereγis the free model *** determined the WH solutions by utilizing two newly developed shape functions(SF)that satisfy all basic conditions for a WH’s physical *** also observe that the null energy condition(NEC)behaves ***,for both models,we use the volume integral quantifier(VIQ)and Tolman-Oppenheimer-Volkoff(TOV)equation to determine how much exotic matter is needed near the WH throat and the stability of the *** extensive detailed discussions of the matter components have been done via graphical *** obtained WH geometries meet the physically acceptable conditions for a stable wormhole.

关键词： energy conditions wormhole exotic matter F(R L_(m))gravity

Charged Noncommutative wormhole Solutions via Power-Law f(T) Models

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Communications in Theoretical Physics 2016年第10期65卷 411-422页

作者： Shamaila Rani Abdul Jawad M.Bilal Amin Department of Mathematics COMSATS Institute of Information Technology

In this paper,we explore static spherically symmetric charged wormhole solutions in extended teleparallel gravity taking power-law f(T) *** consider noncommutative geometry under Lorentzian *** order to obtain matter components,we develop field equations using effective energy-momentum tensor for non-diagonal *** explore solutions by considering various viable power-law f(T) models,which also include teleparallel gravity *** violation of energy conditions obtain by exotic matter to form wormhole solutions in teleparallel case while,physical acceptable wormhole solutions exist for charged noncommutative wormhole solutions for some cases of power-law *** effective energy-momentum tensor and charge are responsible for the violation of the energy ***,we check the equilibrium condition for these *** equilibrium condition meets for the teleparallel case and some power-law solutions while remaining solutions are either in less equilibrium or in disequilibrium situation.

关键词： f(T) gravity wormhole Lorentzian distribution noncommutative geometry

Non-exotic static spherically symmetric thin-shell wormhole solution in f(Q,T)gravity

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Chinese Physics C 2023年第7期47卷 173-189页

作者： Moreshwar Tayde Sayantan Ghosh P.K.Sahoo Department of Mathematics Birla Institute of Technology and Science-PilaniHyderabad CampusHyderabad-500078India

In this study,we conduct an analysis of traversable wormhole solutions within the framework of linear f(Q,T)=αQ+βT gravity,ensuring that all energy conditions hold for the entire *** solutions presented in this paper are derived through a comprehensive analytical examination of the parameter space associated with the wormhole *** involves considering the exponents governing the redshift and shape functions,as well as the radius of the wormhole throat(r_(0)),the redshift function value at the throat(∅_(0)),and the model parameters(αandβ).Moreover,we establish bounds on these free parameters,which guarantee the satisfaction of the energy conditions throughout spacetime and also provide two ***,we use the Israel junction condition to observe the stability of a thin-shell around the ***,we calculate the null energy condition criteria as well as the potential for the thin-shell and how it varies with the chosen shape function.

关键词： wormhole energy conditions f(Q,T)gravity junction condition thin-shell

Energy Optimised Security against wormhole Attack in IoT-Based Wireless Sensor Networks

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Computers, Materials & Continua 2021年第8期68卷 1967-1981页

作者： Hafsa Shahid Humaira Ashraf Hafsa Javed Mamoona Humayun Nz Jhanjhi Mohammed A.AlZain Department of Computer Science and Software Engineering International Islamic University IslamabadIslamabadPakistan Department of Information Systems College of Computer and Information ScienceJouf UniversityAl-JoufSaudi Arabia School of Computer Science and Engineering(SCE) Taylor’s UniversitySelangorMalaysia Department of Information Technology College of Computers and Information TechnologyTaif UniversityTaif21944Saudi Arabia

An IoT-based wireless sensor network(WSN)comprises many small sensors to collect the data and share it with the central *** sensors are battery-driven and resource-restrained devices that consume most of the energy in sensing or collecting the data and transmitting *** data sharing,security is an important concern in such networks as they are prone to many threats,of which the deadliest is the wormhole *** attacks are launched without acquiring the vital information of the network and they highly compromise the communication,security,and performance of the *** the IoT-based network environment,its mitigation becomes more challenging because of the low resource availability in the sensing *** have performed an extensive literature study of the existing techniques against the wormhole attack and categorised them according to their *** analysis of literature has motivated our *** this paper,we developed the ESWI technique for detecting the wormhole attack while improving the performance and *** algorithm has been designed to be simple and less complicated to avoid the overheads and the drainage of energy in its *** simulation results of our technique show competitive results for the detection rate and packet delivery *** also gives an increased throughput,a decreased end-to-end delay,and a much-reduced consumption of energy.

关键词： IoT Internet of Things energy wormhole WSN wireless sensor networks

Two Types of Universe and wormhole From the Wave Function of Universe

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Science China Mathematics 1993年第6期36卷 738-743页

作者：沈有根丁浩刚 Shanghai Observatory Academia Sinica Shanghai 200030 PRC Deportment of Physics Peking University Beijing 100871 PRC

From the wave function of universe with a conformal scalar field obtained in this paper, it is found that there are two different types of universe: (ⅰ) baby universe (B) appearing in the region of α∈[0, H_2^(-1)～0.1l_p]where l_p is Plauck length; (ⅱ) parent universe (P) appearing in the region of α>H_1^(-1)～H^(-1)where H^(-1) is Hubble redius. The two universes are connected with each other through quantum tunnelling effect, and transit from one to the other. The wave function of universe in this model draws a rational picture about wormhole, i.e. it induces the interaction between parent and baby universes and leads to the change of spatial topology.

关键词： wave function of universe baby universe parent universe wormhole conformal sealar field

Gravitational Description and Graphics of a wormhole Structure—A Galactic Megamaximon

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Journal of Modern Physics 2019年第11期10卷 1299-1309页

作者： Yu. A. Khlestkov N. Yu. Lukashina M. Yu. Lukashin P. Yu. Lukashin N. S. Trushkin National Research Nuclear University MEPhI Moscow Russia

Using the new exact solution of Einstein and Maxwell equations in the general relativity theory, they studied the internal structure of a geometric object with a nontrivial topology, the wormhole. They showed that the galactic black hole recently discovered by astronomers and astrophysicists as the part of the Event Horizon Telescope project with the radius about 1016 cm and the mass of about 1043 g can be a wormhole almost neutralized in charge with parameters close to critical—megamaximon, the radius of its neck curvature is equal to the so-called critical radius coinciding with half of the gravitational radius.

关键词： Gravitation wormhole Exact Solution Megamaximon

A Secure Routing Method for Detecting False Reports and wormhole Attacks in Wireless Sensor Networks

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Wireless Sensor Network 2013年第3期5卷 33-40页

作者： Hyeon Myeong Choi Su Man Nam Tae Ho Cho College of Information and Communication Engineering Sungkyunkwan University Suwon South Korea

Wireless sensor networks (WSNs) consist of a large number of sensor nodes that monitor the environment and a few base stations that collect the sensor readings. Individual sensor nodes are subject to compromised security because they may be deployed in hostile environments and each sensor node communicates wirelessly. An adversary can inject false reports into the networks via compromised nodes. Furthermore, an adversary can create a wormhole by directly linking two compromised nodes or using out-of-band channels. If these two kinds of attacks occur simultaneously in a network, existing methods cannot defend against them adequately. We thus propose a secure routing method for detecting false report injections and wormhole attacks in wireless sensor networks. The proposed method uses ACK messages for detecting wormholes and is based on a statistical en-route filtering (SEF) scheme for detecting false reports. Simulation results show that the proposed method reduces energy consumption by up to 20% and provide greater network security.

关键词： Wireless Sensor Network Security Statistical En-Route wormhole Secure Routing

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wormhole机制和真空角

山西大学学报(自然科学版) 1989年第4期 411-419页

作者：张鉴祖山西大学物理系中国高等科学技术中心CCAST(世界实验室) 理论物理分中心协联成员

本文在wormhole框架下,利用手征SU(3)XSU(3)非线性σ模型,讨论了宇宙常数∧和牛顿引力常数G对QCD的θ真空角的普遍依赖关系。(1)在树图近似下,使∧和G取极小值的条件自动给出θ=0或π(对应于CP强守恒)。(2)赝标介子谱的讨论排除了θ=π... 详细信息

本文在wormhole框架下,利用手征SU(3)XSU(3)非线性σ模型,讨论了宇宙常数∧和牛顿引力常数G对QCD的θ真空角的普遍依赖关系。(1)在树图近似下,使∧和G取极小值的条件自动给出θ=0或π(对应于CP强守恒)。(2)赝标介子谱的讨论排除了θ=π情形。对于θ=0情形,赝标介子谱满足Gell-Mann-Qkubo质量公式。(3)对于G,还讨论了单圈贡献。

关键词：量子引力 wormhole θ真空手征非线性σ模型

Android应用出现wormhole漏洞

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电脑爱好者 2015年第24期 55-55页

漏洞名称:wormhole漏洞漏洞危害:很多用户的手机上面都安装有百度出品的应用,如百度地图、百度云、百度音乐、百度输入法等。但是在这些应用的内部会有一个名为Moplus SDK的接口,通过它可以推送钓鱼网页,插入任意联系人,发送伪造短信,... 详细信息

漏洞名称:wormhole漏洞漏洞危害:很多用户的手机上面都安装有百度出品的应用,如百度地图、百度云、百度音乐、百度输入法等。但是在这些应用的内部会有一个名为Moplus SDK的接口,通过它可以推送钓鱼网页,插入任意联系人,发送伪造短信,上传本地文件到远程服务器,未经用户授权安装任意应用到Android设备上等。正是由于这个接口拥有如

关键词：本地文件百度地图百度云 Android wormhole