发布求助
文献互助 智能选刊 最新文献

International Journal of Geometric Methods in Modern Physics最新文献

筛选
英文 中文
Non-Hermitian two-dimensional harmonic oscillator in noncommutative phase-space 非交换相空间中的非厄米二维谐振子
3区 物理与天体物理
International Journal of Geometric Methods in Modern Physics Pub Date : 2023-11-10 DOI: 10.1142/s0219887824500853
Emanonfi Elias N'Dolo
{"title":"Non-Hermitian two-dimensional harmonic oscillator in noncommutative phase-space","authors":"Emanonfi Elias N'Dolo","doi":"10.1142/s0219887824500853","DOIUrl":"https://doi.org/10.1142/s0219887824500853","url":null,"abstract":"In this paper, we extend the result of [Andreas Fring et al J. Phys. A 43, 345401 (2010)] in noncommutative phase-space (NCPS). We compute the non-Hermitian Hamiltonian of a harmonic oscillator in NCPS. We construct a new P T-symmetry in noncommutative phase-space and prove that the system does not possess a broken P T-regime. We then compute the eigenvalue spectrum of the non-Hermitian Hamiltonian of the system.","PeriodicalId":50320,"journal":{"name":"International Journal of Geometric Methods in Modern Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135186154","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Backlund Transformations of Multi-Component Boussinesq and Degasperis-Procesi Equations 多分量Boussinesq和Degasperis-Procesi方程的背景变换
3区 物理与天体物理
International Journal of Geometric Methods in Modern Physics Pub Date : 2023-11-09 DOI: 10.1142/s021988782450066x
Lixiang Zhang, Chuanzhong Li, Haifeng Wang
{"title":"Backlund Transformations of Multi-Component Boussinesq and Degasperis-Procesi Equations","authors":"Lixiang Zhang, Chuanzhong Li, Haifeng Wang","doi":"10.1142/s021988782450066x","DOIUrl":"https://doi.org/10.1142/s021988782450066x","url":null,"abstract":"The finding of new integrable coupling systems has become an important area of research in mathematical physics and their study will aid in the classification of multi-component integrable systems. A basic method for generating integrable coupling systems is algebraic expansion, for example, the Frobenius algebra, the Lie algebra, the superalgebra, and so on. In this paper, we introduce a Frobenius Boussinesq equation based on the Frobenius algebra, and then we present a Lax pair of it. It follows that we give a Bäcklund transformation of the Frobenius Boussinesq equation. Furthermore, the lattice equation of the Frobenius Boussinesq equation is presented by using three Bäcklund transformations, and then obtain the exact solutions. Additionally, we obtain the conservation laws of the Frobenius Boussinesq equation via the Bäcklund transformation. Strongly coupled and weakly coupled systems physically represent strong and weak interactions, respectively. In this paper, we introduce a weakly coupled Degasperis–Procesi (DP) equation, and construct a Lax pair of it. In addition, the Bäcklund transformation and superposition principle are applied to investigate the weakly coupled DP equation. We also obtain the conservation laws of the weakly coupled DP equation. Then, we introduce a strongly coupled DP equation, and use the same method to study the strongly coupled DP equation. The exact solutions of these two equations are obtained. Moreover, we introduce a [Formula: see text]-DP equation. Considering the superposition principle, we obtain the solution of an associated [Formula: see text]-DP equation by using Bäcklund transformations. These new multi-component integrable systems can enrich the existing integrable models and possibly describe new nonlinear phenomena.","PeriodicalId":50320,"journal":{"name":"International Journal of Geometric Methods in Modern Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135191983","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Bianchi Type-V Space Time with Tsallis Holographic Dark Energy 比安奇v型时空与Tsallis全息暗能量
3区 物理与天体物理
International Journal of Geometric Methods in Modern Physics Pub Date : 2023-11-08 DOI: 10.1142/s0219887824500634
A. Narasimharao, D. Neelima
{"title":"Bianchi Type-V Space Time with Tsallis Holographic Dark Energy","authors":"A. Narasimharao, D. Neelima","doi":"10.1142/s0219887824500634","DOIUrl":"https://doi.org/10.1142/s0219887824500634","url":null,"abstract":"In this paper, using the framework of Saez–Ballester theory, Bianchi Type-V metric Tsallis holographic dark energy models with interacting and non-interacting elements have been constructed. To obtain solutions for the model, we used correlation between metric potentials and varying deceleration parameters. There is additional discussion of the models’ physical characteristics and behavior.","PeriodicalId":50320,"journal":{"name":"International Journal of Geometric Methods in Modern Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135293372","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Anisotropic Strange Quintessence Stars in Modified f(R, ϕ) Theory of Gravity 修正f(R， φ)引力理论中的各向异性奇异精星
3区 物理与天体物理
International Journal of Geometric Methods in Modern Physics Pub Date : 2023-11-07 DOI: 10.1142/s0219887824400036
Adnan Malik, Tayyaba Naz, Ayesha Tariq, Z. Yousaf, Ali H. Alkhaldi, M. Umair Shahzad
{"title":"Anisotropic Strange Quintessence Stars in Modified <i>f</i>(<i>R</i>, ϕ) Theory of Gravity","authors":"Adnan Malik, Tayyaba Naz, Ayesha Tariq, Z. Yousaf, Ali H. Alkhaldi, M. Umair Shahzad","doi":"10.1142/s0219887824400036","DOIUrl":"https://doi.org/10.1142/s0219887824400036","url":null,"abstract":"This paper investigated the anisotropic quintessence stars in the [Formula: see text] theory of gravity, where [Formula: see text] is the Ricci scalar and [Formula: see text] is the scalar potential. We investigated the field equations of the [Formula: see text] theory of gravity by using the Krori–Barua technique. We have determined that all the obtained solutions are free from central singularity and potentially stable. The observed values of mass and radius of the different strange stars Her X1, SAXJ1808.4-3658, and 4U1820-30 have been used to calculate the values of unknown constants in the Krori and Barua metric. The physical phenomena of stars, such as energy density, pressure components, anisotropy, sound speeds, equation of state parameters, energy conditions and redshift have been investigated in detail.","PeriodicalId":50320,"journal":{"name":"International Journal of Geometric Methods in Modern Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135432018","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Anisotropies and modified gravity theories in stellar and substellar objects 恒星和亚恒星天体的各向异性和修正引力理论
3区 物理与天体物理
International Journal of Geometric Methods in Modern Physics Pub Date : 2023-11-07 DOI: 10.1142/s0219887824300022
Shaswata Chowdhury
{"title":"Anisotropies and modified gravity theories in stellar and substellar objects","authors":"Shaswata Chowdhury","doi":"10.1142/s0219887824300022","DOIUrl":"https://doi.org/10.1142/s0219887824300022","url":null,"abstract":"In several classes of modified gravity theories, extra degrees of freedom are not completely screened in the interiors of stellar and substellar objects. In such theories, the hydrostatic equilibrium condition inside these objects is altered. Moreover, the interior structures of these objects might have a small pressure anisotropy induced by several physical phenomena, including rotation and magnetic fields. All these effects, both individually and collectively, induce changes in predicted stellar observables. Such changes have an impact on different phases of the stellar life cycle, starting from its birth to its death, covering almost all the branches of the Hertzsprung-Russell diagram. The aim of this work is to systematically review the current literature on the topic. We discuss the main results and constraints obtained on a class of modified gravity theories.","PeriodicalId":50320,"journal":{"name":"International Journal of Geometric Methods in Modern Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135541063","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Gauge CPT: A Review and Use in Constructing New Affine Connections 测量CPT:在构建新的仿射连接中的回顾与应用
3区 物理与天体物理
International Journal of Geometric Methods in Modern Physics Pub Date : 2023-11-07 DOI: 10.1142/s0219887824300034
Kurt Koltko
{"title":"Gauge CPT: A Review and Use in Constructing New Affine Connections","authors":"Kurt Koltko","doi":"10.1142/s0219887824300034","DOIUrl":"https://doi.org/10.1142/s0219887824300034","url":null,"abstract":"","PeriodicalId":50320,"journal":{"name":"International Journal of Geometric Methods in Modern Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135541286","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Cosmography for Various Parametrizations of Dark Energy Equation of State 暗能量状态方程各种参数化的宇宙学
3区 物理与天体物理
International Journal of Geometric Methods in Modern Physics Pub Date : 2023-11-04 DOI: 10.1142/s0219887824500518
Alok Sardar, Tanusree Roy, Ujjal Debnath
{"title":"Cosmography for Various Parametrizations of Dark Energy Equation of State","authors":"Alok Sardar, Tanusree Roy, Ujjal Debnath","doi":"10.1142/s0219887824500518","DOIUrl":"https://doi.org/10.1142/s0219887824500518","url":null,"abstract":"The concept of dark energy (DE) emerged as a result of confirming the accelerated expansion of the universe. Since then, numerous models have been developed to explore the origin and nature of DE. In this study, we investigate several recent cosmological models (Models 1–9) based on the parametrization of the DE equation of state. Our analysis focuses on a homogeneous, isotropic flat universe comprising DE, dark matter (DM), and radiation. We assume the separate conservation of the dark components (DE and DM) and radiation. By employing various parametrizations of [Formula: see text], we derive the corresponding Hubble function [Formula: see text]. To understand the cosmic expansion history of the universe in a model-independent manner, we employ cosmography as an approach. We express important cosmographic parameters such as deceleration, jerk, snap, and lerk parameters in terms of the Hubble rate [Formula: see text] and its derivative up to the fourth order. Additionally, we examine the statefinder parameter and [Formula: see text] diagnostics to distinguish between different types of DE models. Finally, we compare the physical interpretations of these diagnostic parameters with the standard [Formula: see text]CDM model to assess the viability of each model.","PeriodicalId":50320,"journal":{"name":"International Journal of Geometric Methods in Modern Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135728303","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Cosmology of New Tsallis Holographic Dark Energy Based Reconstructed Models in Teleparallel Theories 远平行理论中基于新Tsallis全息暗能量重建模型的宇宙学
3区 物理与天体物理
International Journal of Geometric Methods in Modern Physics Pub Date : 2023-11-04 DOI: 10.1142/s021988782450083x
Saira Waheed
{"title":"Cosmology of New Tsallis Holographic Dark Energy Based Reconstructed Models in Teleparallel Theories","authors":"Saira Waheed","doi":"10.1142/s021988782450083x","DOIUrl":"https://doi.org/10.1142/s021988782450083x","url":null,"abstract":"","PeriodicalId":50320,"journal":{"name":"International Journal of Geometric Methods in Modern Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135775379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 Detection Problem for Fusion Frames 融合帧的量子检测问题
3区 物理与天体物理
International Journal of Geometric Methods in Modern Physics Pub Date : 2023-11-04 DOI: 10.1142/s0219887824500671
A. Rahimi, A. Ghasemzadeh, B. Daraby, Firdous A. Shah
{"title":"Quantum Detection Problem for Fusion Frames","authors":"A. Rahimi, A. Ghasemzadeh, B. Daraby, Firdous A. Shah","doi":"10.1142/s0219887824500671","DOIUrl":"https://doi.org/10.1142/s0219887824500671","url":null,"abstract":"A quantum injective frame is a frame whose measurements for density operators can be used as a distinguishing feature in a quantum system, and the frame quantum detection problem demands a characterization of all such frames. Very recently, the quantum detection problem for continuous as well as discrete frames in both finite and infinite dimensional Hilbert spaces received significant attention. The quantum detection problem pertaining to the characterization of informationally complete positive operator-valued measures (POVM) can be split into two cases: The quantum injectivity or state separability problem and the rang analysis or quantum state estimation problem. Building upon this notion, this note is aimed at the quantum detection problem for fusion frames. The injectivity of a family of vectors and a family of closed subspaces is characterized in terms of some operator equations in Hilbert–Schmidt and trace classes.","PeriodicalId":50320,"journal":{"name":"International Journal of Geometric Methods in Modern Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135728098","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Galactic rotation curves of spiral galaxies and dark matter in f(ℛ,T) gravity theory f(g,T)引力理论中螺旋星系和暗物质的星系旋转曲线
3区 物理与天体物理
International Journal of Geometric Methods in Modern Physics Pub Date : 2023-11-04 DOI: 10.1142/s0219887824500828
Gayatri Mohan, Umananda Dev Goswami
{"title":"Galactic rotation curves of spiral galaxies and dark matter in f(ℛ,T) gravity theory","authors":"Gayatri Mohan, Umananda Dev Goswami","doi":"10.1142/s0219887824500828","DOIUrl":"https://doi.org/10.1142/s0219887824500828","url":null,"abstract":"","PeriodicalId":50320,"journal":{"name":"International Journal of Geometric Methods in Modern Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135775378","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
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：481959085
Book学术官方微信