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Travelling Wave Solution for Generalised (4+1) Dimensional Fractional Order Fokas Equation Using Residual Power Series method
IF 1.3 4区 物理与天体物理
International Journal of Theoretical Physics Pub Date : 2025-01-23 DOI: 10.1007/s10773-025-05898-7
Ashrita Patra, Tapasi Pasayat
{"title":"Travelling Wave Solution for Generalised (4+1) Dimensional Fractional Order Fokas Equation Using Residual Power Series method","authors":"Ashrita Patra,&nbsp;Tapasi Pasayat","doi":"10.1007/s10773-025-05898-7","DOIUrl":"10.1007/s10773-025-05898-7","url":null,"abstract":"<div><p>In this article, the fractional order (4+1) dimensional Fokas equation has been analyzed by using an efficient approach called Residual power series Method (RPSM). On Fokas equation, the remarkable dependence of modeling the tidal waves and ocean, especially long water waves and tsunami has been noticed. To study the wave groups in water through measurable depth, external or internal waves in oceans and rivers Fokas model can be utilized. To acquire the approximate solitary wave solutions the RPSM has been employed by using Caputo fractional derivative. The acquired results reveal the efficiency and simplicity of the suggested technique which is more conscientious to solve higher dimensional nonlinear ordinary as well as partial differential equations.</p></div>","PeriodicalId":597,"journal":{"name":"International Journal of Theoretical Physics","volume":"64 2","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143108919","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
Finite Size Effect on Classical Ideal Gas Confined in a Potential Akin to the SUSY Partner of a Particle in a Box
IF 1.3 4区 物理与天体物理
International Journal of Theoretical Physics Pub Date : 2025-01-23 DOI: 10.1007/s10773-025-05891-0
Paulami Ghosh, Nabakumar Bera
{"title":"Finite Size Effect on Classical Ideal Gas Confined in a Potential Akin to the SUSY Partner of a Particle in a Box","authors":"Paulami Ghosh,&nbsp;Nabakumar Bera","doi":"10.1007/s10773-025-05891-0","DOIUrl":"10.1007/s10773-025-05891-0","url":null,"abstract":"<div><p>Thermodynamic quantities of a classical gas enclosed in a finite size container are examined. Confinement can have many important effects when there is zero potential within. But the effect may even become more important if the gas experiences a potential. Using a potential which is a variance of the supersymmetric partner of the particle in a box, we have shown that there is a significant change in thermodynamic properties such as internal energy, Helmholtz free energy, entropy and heat capacity. We have shown that like many other potentials, this particular potential also shows variation of specific heat with temperature that passes through a maximum.</p></div>","PeriodicalId":597,"journal":{"name":"International Journal of Theoretical Physics","volume":"64 2","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10773-025-05891-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143108918","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Some New Quantum Codes from Constacyclic BCH Codes
IF 1.3 4区 物理与天体物理
International Journal of Theoretical Physics Pub Date : 2025-01-23 DOI: 10.1007/s10773-025-05895-w
Ping Li, Yancong Wei, Xiaoshan Kai, Jin Li
{"title":"Some New Quantum Codes from Constacyclic BCH Codes","authors":"Ping Li,&nbsp;Yancong Wei,&nbsp;Xiaoshan Kai,&nbsp;Jin Li","doi":"10.1007/s10773-025-05895-w","DOIUrl":"10.1007/s10773-025-05895-w","url":null,"abstract":"<div><p>Let <span>(qge 3)</span> be an odd prime power and <span>(mge 2)</span> be an even integer. In this paper, a kind of narrow-sense constacyclic BCH codes over <span>(mathbb {F}_{q^2})</span> with lengths <span>(n=frac{q^{2m}-1}{2a(q+1)})</span> are studied, where <span>(qequiv a+1 pmod {2a})</span> and <span>(a&lt;q-1)</span>. The maximum designed distances such that narrow-sense constacyclic BCH codes over <span>(mathbb {F}_{q^2})</span> with length <span>(frac{q^{2m}-1}{2a(q+1)})</span> containing their Hermitian dual codes are determined. We obtain some quantum codes with good parameters by such narrow-sense constacyclic BCH codes. The quantum codes that we construct have larger designed distances or dimensions than the ones with the same length in the literature.</p></div>","PeriodicalId":597,"journal":{"name":"International Journal of Theoretical Physics","volume":"64 2","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143108917","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
Some Monogamy Inequalities Based on the (alpha )-logarithmic Concurrence Measure for N-qubit States 基于(alpha ) -对数n量子位态并发测度的一夫一妻制不等式
IF 1.3 4区 物理与天体物理
International Journal of Theoretical Physics Pub Date : 2025-01-22 DOI: 10.1007/s10773-025-05897-8
Yinzhu Wang, Chen Cheng, Lihua Hao, Yanjing Sun, Ruifen Ma
{"title":"Some Monogamy Inequalities Based on the (alpha )-logarithmic Concurrence Measure for N-qubit States","authors":"Yinzhu Wang,&nbsp;Chen Cheng,&nbsp;Lihua Hao,&nbsp;Yanjing Sun,&nbsp;Ruifen Ma","doi":"10.1007/s10773-025-05897-8","DOIUrl":"10.1007/s10773-025-05897-8","url":null,"abstract":"<div><p>Monogamy relation is one of the essential properties of quantum entanglement, which characterizes the distribution of entanglement in a multipartite system. In this paper, we introduce some monogamy inequalities based on the <span>(alpha )</span>-logarithmic concurrence entanglement measure for <i>N</i>-qubit states and we demonstrate that our new monogamy inequality is stronger than existing monogamous relations. Finally, the newly given monogamy inequality is shown to be stricter through some detailed examples.</p></div>","PeriodicalId":597,"journal":{"name":"International Journal of Theoretical Physics","volume":"64 2","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142995623","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
Nanomechanically-Induced Transparency in (mathcal{P}mathcal{T})-Symmetric Optical Cavities (mathcal{P}mathcal{T}) -对称光学腔中纳米机械诱导的透明性
IF 1.3 4区 物理与天体物理
International Journal of Theoretical Physics Pub Date : 2025-01-21 DOI: 10.1007/s10773-025-05892-z
Amjad Sohail, Hazrat Ali, Aamir Shahzad, Tariq Munir, Rizwan Ahmed
{"title":"Nanomechanically-Induced Transparency in (mathcal{P}mathcal{T})-Symmetric Optical Cavities","authors":"Amjad Sohail,&nbsp;Hazrat Ali,&nbsp;Aamir Shahzad,&nbsp;Tariq Munir,&nbsp;Rizwan Ahmed","doi":"10.1007/s10773-025-05892-z","DOIUrl":"10.1007/s10773-025-05892-z","url":null,"abstract":"<div><p>We propose an efficient scheme to analytically discuss the phenomena of nanomechanically induced transparency (NMIT) and transmission rate in a parity-time-symmetric (<span>(mathcal{P}mathcal{T})</span>-symmetric) optonanomechanical system (ONMS). A levitated dielectric nanosphere is trapped near the antinodes closest to the passive cavity’s right mirror, which is further coupled to an active cavity via a hoping factor. We discover that the phenomenon of NMIT may be generated from the output probe field in the presence of an effective optonanomechanical coupling between the cavity field and the nanosphere, whose steady-state position is influenced by the Coulomb interaction between the cavity mirror and the nanosphere. This optonanomechanical coupling strength can be well modified by varying the radius of the nanosphere and the Coulomb interaction. Furthermore, optical absorption and amplification can be adjusted by manipulating the gain-to-loss ratio as well as varying the effective optonanomechanical coupling strength. The transition NMIT behavior in the <span>(mathcal{P}mathcal{T})</span>-symmetric and broken <span>(mathcal{P}mathcal{T})</span>-symmetric domain is among the most intriguing results. Finally, for a fixed gain-to-loss ratio, the transmission spectra can also be studied by varying the steady-state position of the nanosphere. These results show that our scheme may inspire some potential applications for optical signal processing and quantum information processing.</p></div>","PeriodicalId":597,"journal":{"name":"International Journal of Theoretical Physics","volume":"64 2","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142995701","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
Kiselev/CFT Correspondence and Black Hole Thermodynamics Kiselev/CFT对应和黑洞热力学
IF 1.3 4区 物理与天体物理
International Journal of Theoretical Physics Pub Date : 2025-01-20 DOI: 10.1007/s10773-025-05885-y
J. Sadeghi, B. Pourhassan, M. Rostami, Z. Nekouee
{"title":"Kiselev/CFT Correspondence and Black Hole Thermodynamics","authors":"J. Sadeghi,&nbsp;B. Pourhassan,&nbsp;M. Rostami,&nbsp;Z. Nekouee","doi":"10.1007/s10773-025-05885-y","DOIUrl":"10.1007/s10773-025-05885-y","url":null,"abstract":"<div><p>In this research, we comprehensively investigate the thermodynamic properties of the Kiselev black hole and its holographic counterpart. Our investigation yields the thermodynamic product relations for the Kiselev black hole in environments permeated by dust and radiation. We establish that similar to Einstein’s gravity scenarios, the product of area (or entropy) in both contexts retains mass independence, suggesting its potential universality. In addition, we deduce bounds for the black hole’s entropy at both the inner and outer horizons. We also unveil an asymmetry between the central charges of the left and right-moving sectors when placed within the framework of universal thermodynamic principles. This asymmetry paves the way for inferring the central charges in the associated conformal field theory (CFT). Contrary to our initial findings, we observe that the central charges for the left and right-moving sectors in the CFT ultimately conform to uniform values.</p></div>","PeriodicalId":597,"journal":{"name":"International Journal of Theoretical Physics","volume":"64 2","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142994918","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 Set of Unitary Irreps of Discrete Heisenberg Group ( HW_{2^{s}}) 离散Heisenberg群的酉逆的完备集 ( HW_{2^{s}})
IF 1.3 4区 物理与天体物理
International Journal of Theoretical Physics Pub Date : 2025-01-18 DOI: 10.1007/s10773-025-05888-9
E. Floratos, I. Tsohantjis
{"title":"Complete Set of Unitary Irreps of Discrete Heisenberg Group ( HW_{2^{s}})","authors":"E. Floratos,&nbsp;I. Tsohantjis","doi":"10.1007/s10773-025-05888-9","DOIUrl":"10.1007/s10773-025-05888-9","url":null,"abstract":"<div><p>Following the method of induced group representations of Wigner-Mackay, the explicit construction of all the unitary irreducible representations of the discrete finite Heisenberg-Weyl group <span>(HW_{2^{s}})</span> over the discrete phase space lattice <span>(mathbb {Z}_{2^{s}}otimes )</span> <span>(mathbb {Z}_{2^{s}})</span> is presented. We explicitly determine their characters and their fusion rules. We discuss possible physical applications for finite quantum mechanics and quantum computation.</p></div>","PeriodicalId":597,"journal":{"name":"International Journal of Theoretical Physics","volume":"64 2","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10773-025-05888-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142995488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Deformed Compact Objects 变形致密物体
IF 1.3 4区 物理与天体物理
International Journal of Theoretical Physics Pub Date : 2025-01-18 DOI: 10.1007/s10773-025-05890-1
J. T. Quartuccio, P. H. R. S. Moraes, J. D. V. Arbañil
{"title":"Deformed Compact Objects","authors":"J. T. Quartuccio,&nbsp;P. H. R. S. Moraes,&nbsp;J. D. V. Arbañil","doi":"10.1007/s10773-025-05890-1","DOIUrl":"10.1007/s10773-025-05890-1","url":null,"abstract":"<div><p>We present solutions for deformed compact astrophysical objects. We begin by presenting the derivation of the Tolman-Oppenheimer-Volkoff equations from a parameterized metric that takes into account the deformation of the star expressed in terms of a parameter <span>(mathcal {D})</span>, which is the ratio between polar and equatorial radii. The stellar structure is solved using the GM1 and MIT bag model equations of state, and the “deformed” Tolman-Oppenheimer-Volkoff equation is numerically integrated for different values of <span>(mathcal {D})</span>. To simplify the analysis, the dimensionality of the problem is reduced to a single radial component, leveraging a direct relationship between <span>(mathcal {D})</span> and the polar and equatorial directions. This approach allows us to demonstrate the influence of deformation in the star’s mass in a consistent manner. We show that larger values of <span>(mathcal {D}&gt;1)</span>, describing prolate objects, yield smaller values of mass and radius, while for smaller values of <span>(mathcal {D}&lt;1)</span>, describing oblate objects, larger values for mass and radius are attained. We also show that from the confrontation of our model theoretical predictions with recent observational data on pulsars, it is possible to constrain the values of the parameter <span>(mathcal {D})</span>. Remarkably, the solutions for the two distinct equations of state, when compared to such observational data, yield the same constraints on the deformation parameter.</p></div>","PeriodicalId":597,"journal":{"name":"International Journal of Theoretical Physics","volume":"64 2","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142995490","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
Bidirectional Quantum Teleportation in Presence of Dephasing 消相存在下的双向量子隐形传态
IF 1.3 4区 物理与天体物理
International Journal of Theoretical Physics Pub Date : 2025-01-16 DOI: 10.1007/s10773-025-05889-8
Javid Ahmad Malik, Muzaffar Qadir Lone, Prince A Ganai
{"title":"Bidirectional Quantum Teleportation in Presence of Dephasing","authors":"Javid Ahmad Malik,&nbsp;Muzaffar Qadir Lone,&nbsp;Prince A Ganai","doi":"10.1007/s10773-025-05889-8","DOIUrl":"10.1007/s10773-025-05889-8","url":null,"abstract":"<div><p>Perfect quantum teleportation relies on a maximally entangled channel shared between two users. However, inherent decoherence effects make this idea difficult to achieve in practice. Specifically, dephasing causes phase randomization, leading to information loss and reduced fidelity in quantum teleportation. This study examines the impact of dephasing on bidirectional quantum teleportation (BQT) by analyzing the average fidelity of BQT under different environmental conditions. Results show that the average fidelity remains above the classical limit of <span>(frac{2}{3})</span> for various bath spectral densities like (sub-ohmic (<span>(s &lt; 1 )</span> ), ohmic ( <span>(s = 1 )</span>), and super-ohmic (<span>(s &gt; 1 )</span>) ), as well as over a range of cutoff frequencies (<span>(omega _{c})</span>). In the sub-ohmic case, enhanced fidelity of BQT is observed. The dephasing effects on <span>( N leftrightarrow N )</span> qubit BQT are also explored, with our analysis uniquely demonstrating that the intrinsic efficiency (<span>( eta )</span>) can reach a maximum value of <span>( 50% )</span> while minimizing resource consumption and complexity.</p></div>","PeriodicalId":597,"journal":{"name":"International Journal of Theoretical Physics","volume":"64 2","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142995095","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
Ulam–Hyers–Mittag–Leffler Stability for a Class of Nonlinear Fractional Reaction–Diffusion Equations with Delay 一类非线性分数阶反应扩散方程的Ulam-Hyers-Mittag-Leffler稳定性
IF 1.3 4区 物理与天体物理
International Journal of Theoretical Physics Pub Date : 2025-01-15 DOI: 10.1007/s10773-025-05884-z
Rahim Shah, Natasha Irshad
{"title":"Ulam–Hyers–Mittag–Leffler Stability for a Class of Nonlinear Fractional Reaction–Diffusion Equations with Delay","authors":"Rahim Shah,&nbsp;Natasha Irshad","doi":"10.1007/s10773-025-05884-z","DOIUrl":"10.1007/s10773-025-05884-z","url":null,"abstract":"<div><p>In this paper, we introduce and analyze two new results on the Mittag–Leffler–Ulam–Hyers stability for a class of nonlinear fractional reaction–diffusion equations with delay. We demonstrate that these equations exhibit Ulam–Hyers–Mittag–Leffler stability on a compact interval with respect to the Chebyshev and Bielecki norms, using fixed–point method. These results extend and encompass many previous findings while offering notable improvements. To illustrate the practical applications of our results, we provide three examples. Despite extensive literature on the Lyapunov, Ulam, and Mittag–Leffler stability of fractional equations with and without delays, there is limited research on the Mittag–Leffler–Ulam–Hyers stability of fractional equations with delay. Hence, a key aim of this work is to address this gap by exploring a class of nonlinear fractional reaction–diffusion equations with delay and establishing new results on their Mittag–Leffler–Ulam–Hyers stability.</p></div>","PeriodicalId":597,"journal":{"name":"International Journal of Theoretical Physics","volume":"64 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10773-025-05884-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142976524","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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