发布求助
文献互助 智能选刊 最新文献

Modern Physics Letters A最新文献

筛选
英文 中文
Emerging WGC from the Dirac particle around black holes 由黑洞周围的狄拉克粒子形成的WGC
4区 物理与天体物理
Modern Physics Letters A Pub Date : 2023-09-07 DOI: 10.1142/s0217732323501225
Jafar Sadeghi, Mohammad Reza Alipour, Saeed Noori Gashti
{"title":"Emerging WGC from the Dirac particle around black holes","authors":"Jafar Sadeghi, Mohammad Reza Alipour, Saeed Noori Gashti","doi":"10.1142/s0217732323501225","DOIUrl":"https://doi.org/10.1142/s0217732323501225","url":null,"abstract":"In this paper, we study the Dirac particle near the event horizon of the charged Bañados-Teitelboim-Zanelli (BTZ) black hole and Reissner–Nordström (R-N) black holes to obtain its energy spectrum for discussing the weak gravity conjecture (WGC). The corresponding energy has both real and imaginary parts. We encounter the quasi-normal mode. Because the considered black holes have mass [Formula: see text] and charge [Formula: see text], this property allows us to examine the WGC using the energy spectrum with specific conditions. We attempt to investigate the WGC for these black holes by utilizing the Dirac particle energy spectrum obtained near charged black holes. Also, we impose conditions on the energy spectrum of particles for which the WGC holds for charged black holes, i.e. [Formula: see text]. To approve the WGC near the event horizon of black holes, we determine that the Dirac particle has a specified charge viz [Formula: see text] and [Formula: see text] for R-N and charged BTZ black holes, respectively.","PeriodicalId":18752,"journal":{"name":"Modern Physics Letters A","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135097915","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
An SU(15) approach to bifermion classification 双歧杆菌分类的SU(15)方法
4区 物理与天体物理
Modern Physics Letters A Pub Date : 2023-09-07 DOI: 10.1142/s0217732323501249
Claudio Corianò, Paul H. Frampton, Dario Melle, Thomas W. Kephart, Tzu-Chiang Yuan
{"title":"An SU(15) approach to bifermion classification","authors":"Claudio Corianò, Paul H. Frampton, Dario Melle, Thomas W. Kephart, Tzu-Chiang Yuan","doi":"10.1142/s0217732323501249","DOIUrl":"https://doi.org/10.1142/s0217732323501249","url":null,"abstract":"One interesting way to extend the Standard Model is the hypothesis of bifermions which are bosons that couple to pairs of quarks and leptons. We point out that [Formula: see text] grand unification gives a natural way to classify bifermions and discuss leptoquarks, biquarks and bileptons. In fact, [Formula: see text] provides an ideal covering group as it contains all possible bifermions within a single model.","PeriodicalId":18752,"journal":{"name":"Modern Physics Letters A","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135096893","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
Study on the RVB method for calculating the Hawking temperature of black holes 计算黑洞霍金温度的RVB方法研究
4区 物理与天体物理
Modern Physics Letters A Pub Date : 2023-09-07 DOI: 10.1142/s0217732323501250
Junlan Xian, Tangmei He, Jingyi Zhang
{"title":"Study on the RVB method for calculating the Hawking temperature of black holes","authors":"Junlan Xian, Tangmei He, Jingyi Zhang","doi":"10.1142/s0217732323501250","DOIUrl":"https://doi.org/10.1142/s0217732323501250","url":null,"abstract":"In this work, we study the RVB method for calculating the Hawking temperature of different black holes and find that there is an undetermined integral constant in the temperature expression. We use this method to calculate the Hawking temperature of the black hole in Einstein gravity, and massive gravity, Einstein–Gauss–Bonnet gravity, Scalar–Tensor–Vector modified gravity and [Formula: see text] gravity, respectively. By comparing with the temperature obtained by the Hawking temperature formula, we find that regardless of the gravitational theory from which the black hole solution is obtained, after the black hole metric is reduced to two dimensions, if there is no first-order term of [Formula: see text] in [Formula: see text], the integral constant is 0. If there is a first-order term of [Formula: see text] in [Formula: see text], the integral constant is determined by the coefficient in front of the first-order term of [Formula: see text].","PeriodicalId":18752,"journal":{"name":"Modern Physics Letters A","volume":"97 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135097265","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
Quintessence reconstruction through new Tsallis holographic dark energy model 利用新的Tsallis全息暗能量模型重建国粹
4区 物理与天体物理
Modern Physics Letters A Pub Date : 2023-09-07 DOI: 10.1142/s0217732323501201
Umesh Kumar Sharma, Bramha Dutta Pandey, P. Suresh Kumar, None Pankaj
{"title":"Quintessence reconstruction through new Tsallis holographic dark energy model","authors":"Umesh Kumar Sharma, Bramha Dutta Pandey, P. Suresh Kumar, None Pankaj","doi":"10.1142/s0217732323501201","DOIUrl":"https://doi.org/10.1142/s0217732323501201","url":null,"abstract":"In statistical theory, the Tsallis entropy is an extended form of the Boltzmann–Gibbs entropy. The dimensionless parameter [Formula: see text] is employed to state the quantitative difference from the standard scenario. The concepts of Tsallis entropy and the future event horizon are employed in formulating the present new Tsallis holographic dark energy (NTHDE) model. The model attempts to explain the properties of dark energy using the foundation of quantum gravity. The differential equation characterizing the evolution of the NTHDE density parameter is obtained. Expressions stating the dynamic behavior such as equation of state (EoS), deceleration and jerk parameters are obtained in terms of the NTHDE density parameter. For [Formula: see text], the quintessence nature of scalar field could completely characterize the NTHDE. A reconstruction of the scalar field’s dynamics and quintessence potential is attempted. We demonstrate that the diagnosis made by statefinder is adaptive enough to distinguish between quintessence and cosmological constant-based dark energy models. Additionally, observational data obtained from CC[Formula: see text] SNIa [Formula: see text] union 2.1 sources are used to evaluate the model’s effectiveness.","PeriodicalId":18752,"journal":{"name":"Modern Physics Letters A","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135098990","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
Impact of f(ℜ,𝒯2) theory on stable Finch–Skea gravastar model f(1，𝒯2)理论对稳定Finch-Skea gravastar模型的影响
4区 物理与天体物理
Modern Physics Letters A Pub Date : 2023-09-07 DOI: 10.1142/s0217732323501237
M. Sharif, Saba Naz
{"title":"Impact of f(ℜ,𝒯2) theory on stable Finch–Skea gravastar model","authors":"M. Sharif, Saba Naz","doi":"10.1142/s0217732323501237","DOIUrl":"https://doi.org/10.1142/s0217732323501237","url":null,"abstract":"This paper examines the structure of a gravitational vacuum star (also known as gravastar) in the background of [Formula: see text] theory. This hypothetical object can be treated as a substitute of a black hole, with three regions: (i) the internal region, (ii) the intrinsic shell and (iii) the outer region. We examine these geometries using Finch–Skea metric for the radial metric component along with the particular [Formula: see text] model. We determine singularity-free solutions for both the inner as well as thin-shell domains. The smooth matching of the interior region with external Schwarzschild spacetime is obtained through Israel matching constraints. Finally, we study various characteristics of gravastar domains including the equation-of-state parameter, proper length, entropy, energy as well as surface redshift. It is found that the compact gravastar structure is a viable alternate to the black hole in the perspective of this gravity.","PeriodicalId":18752,"journal":{"name":"Modern Physics Letters A","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135098991","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
Exact solutions and invariant subspaces to the nonlinear dissipative–dispersive equation 非线性耗散-色散方程的精确解和不变子空间
IF 1.4 4区 物理与天体物理
Modern Physics Letters A Pub Date : 2023-09-06 DOI: 10.1142/s0217732323501110
Lixiang Zhang, Chuanzhong Li
{"title":"Exact solutions and invariant subspaces to the nonlinear dissipative–dispersive equation","authors":"Lixiang Zhang, Chuanzhong Li","doi":"10.1142/s0217732323501110","DOIUrl":"https://doi.org/10.1142/s0217732323501110","url":null,"abstract":"In this paper, we performed Lie symmetry analysis and applied [Formula: see text] expansion method on the nonlinear dissipative–dispersive equation. The purpose of this research is to find the vector fields and transform the nonlinear dissipative–dispersive equation into simpler forms. The Maple software was used to obtain the vector field and similarity reductions for nonlinear dissipative–dispersive equations. In addition, we obtained exact solutions based on the [Formula: see text] expansion method and power series method, including the hyperbolic functions, the trigonometric functions and the rational functions. The method we used is direct, concise, elementary and effective, and can be used for many other nonlinear evolution equations. Furthermore, the invariant subspaces of the nonlinear dissipative–dispersive equation were identified using the refined invariant subspaces method. The invariant subspaces of solutions to linear ordinary differential equations were used to prove that nonlinear dissipative–dispersive equation admits subspaces. The exact solutions were obtained by using generalized separated variables.","PeriodicalId":18752,"journal":{"name":"Modern Physics Letters A","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42506589","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 forgery attacks against OTR structures based on Simon’s algorithm 基于Simon算法的OTR结构量子伪造攻击
IF 1.4 4区 物理与天体物理
Modern Physics Letters A Pub Date : 2023-08-31 DOI: 10.1142/s021773232350092x
Wenjie Liu, Mengting Wang, Zi-Xi Li
{"title":"Quantum forgery attacks against OTR structures based on Simon’s algorithm","authors":"Wenjie Liu, Mengting Wang, Zi-Xi Li","doi":"10.1142/s021773232350092x","DOIUrl":"https://doi.org/10.1142/s021773232350092x","url":null,"abstract":"Classical forgery attacks against Offset Two-round (OTR) structures require some harsh conditions, such as some plaintext and ciphertext pairs need to be known, and the success probability is not too high. To solve these problems, a quantum forgery attack on OTR structure using Simon’s algorithm is proposed. The attacker intercepts the ciphertext-tag pair [Formula: see text] between the sender and receiver, while Simon’s algorithm is used to find the period of the tag generation function in OTR, then we can successfully forge new ciphertext [Formula: see text] ([Formula: see text]) for intercepted tag [Formula: see text]. For a variant of OTR structure (Prøst-OTR-Even-Mansour structure), a universal forgery attack, in which it is easy to generate the correct tag of any given message if the attacker is allowed to change a single block in it, is proposed. It first obtains the secret parameter [Formula: see text] using Simon’s algorithm, then the secret parameter [Formula: see text] is used to find the keys [Formula: see text] and [Formula: see text], so that an attacker can forge the changed messages. It only needs several plaintext blocks to help obtain the keys to forge any messages. Performance analysis shows that the query complexity of our attack is [Formula: see text], and its success probability is very close to 1.","PeriodicalId":18752,"journal":{"name":"Modern Physics Letters A","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48287263","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
Complete symmetry group for the generalized convection-reaction-diffusion equation 广义对流-反应-扩散方程的完全对称群
IF 1.4 4区 物理与天体物理
Modern Physics Letters A Pub Date : 2023-08-31 DOI: 10.1142/s0217732323500979
A. Paliathanasis
{"title":"Complete symmetry group for the generalized convection-reaction-diffusion equation","authors":"A. Paliathanasis","doi":"10.1142/s0217732323500979","DOIUrl":"https://doi.org/10.1142/s0217732323500979","url":null,"abstract":"In this paper, we perform a detailed group classification for a generalized convection-reaction-diffusion equation with three unknown functions. Specifically, we determine all the functional forms for the unknown functions where the given equation admits nontrivial Lie point symmetries. The classification problem provides us with eight families of equations summarized in four categories. The admitted Lie symmetries form the four Lie algebras [Formula: see text], [Formula: see text], [Formula: see text] and [Formula: see text]. For the four families of the classification problem we calculate the one-dimensional optimal system and we derive all the similarity transformations which reduce the partial differential equation into an ordinary differential equation. Applications of the similarity transformations are presented while exact solutions are derived.","PeriodicalId":18752,"journal":{"name":"Modern Physics Letters A","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45284251","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
On the categorical foundations of quantum information theory: Categories and the Cramer-Rao inequality 论量子信息论的范畴基础:范畴和Cramer-Rao不等式
IF 1.4 4区 物理与天体物理
Modern Physics Letters A Pub Date : 2023-08-31 DOI: 10.1142/S0217732323500852
Florio M. Ciaglia, F. Cosmo, Laura Gonz'alez-Bravo, Alberto Ibort, G. Marmo
{"title":"On the categorical foundations of quantum information theory: Categories and the Cramer-Rao inequality","authors":"Florio M. Ciaglia, F. Cosmo, Laura Gonz'alez-Bravo, Alberto Ibort, G. Marmo","doi":"10.1142/S0217732323500852","DOIUrl":"https://doi.org/10.1142/S0217732323500852","url":null,"abstract":"An extension of Cencov’s categorical description of classical inference theory to the domain of quantum systems is presented. It provides a novel categorical foundation to the theory of quantum information that embraces both classical and quantum information theories in a natural way, while also allowing to formalize the notion of quantum environment. A first application of these ideas is provided by extending the notion of statistical manifold to incorporate categories, and investigating a possible, uniparametric Cramer–Rao inequality in this setting.","PeriodicalId":18752,"journal":{"name":"Modern Physics Letters A","volume":"abs/2309.10428 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64025923","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
Dynamical system scenario for accretion discs: Dark energy acting through the spacetime metric 吸积盘的动力系统情景:暗能量通过时空度量作用
IF 1.4 4区 物理与天体物理
Modern Physics Letters A Pub Date : 2023-08-31 DOI: 10.1142/s0217732323501031
Giridhari Deogharia, Ritabrata Biswas
{"title":"Dynamical system scenario for accretion discs: Dark energy acting through the spacetime metric","authors":"Giridhari Deogharia, Ritabrata Biswas","doi":"10.1142/s0217732323501031","DOIUrl":"https://doi.org/10.1142/s0217732323501031","url":null,"abstract":"Studies of accretion toward black holes are found in the literature where dark energy is chosen to act as the accreting agent. Studies of a dynamical system related to such a phase portrait are also available. In this paper, the central engine is opted to be embedded in a dark energy universe. Footprints of the dark energy equation of state are found in the black hole’s metric chosen by us. Using the pseudo Newtonian method, the force complexity due to relativity is replaced with simplified terms. Dynamical system for a viscous accretion is constructed. Each point of this said system is a three-coordinated tuple presenting radial inward speed, sonic speed and specific angular momenta one after the other. A bent curve of center equilibrium is found. Two planes are seen which are, respectively, attractor and repeller. Every case is physically interpreted. For a viscous accretion onto a dark energy embedded black hole, it is followed that the center equilibrium points are forming a closed curve taking the origin on its own plane. Though the orbit of such a center equilibrium curve keeps only a part of it in the space of discussion.","PeriodicalId":18752,"journal":{"name":"Modern Physics Letters A","volume":"1 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64026075","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
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：604180095
Book学术官方微信