{"title":"Comment on “Solitary Wave Solutions in (2+1) Dimensions: The KdV Equation Derived from Ideal Fluid Models”, IJTP (2024) 63:105","authors":"Karczewska Anna, Rozmej Piotr, Kędziora Przemysław","doi":"10.1007/s10773-024-05804-7","DOIUrl":"10.1007/s10773-024-05804-7","url":null,"abstract":"<div><p>We show that the solutions presented in <i>Solitary Wave Solutions in (2+1) Dimensions: The KdV Equation Derived from Ideal Fluid Models</i> by Javid et al. (Int. J. Theor. Phys. <b>63</b>, 105 2024) although mathematically correct have no physical sense. The results of the commented article show the danger of using only mathematics to solve nonlinear wave equations when the physical origin of the solved equations is forgotten.</p></div>","PeriodicalId":597,"journal":{"name":"International Journal of Theoretical Physics","volume":"63 10","pages":""},"PeriodicalIF":1.3,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10773-024-05804-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142452881","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}
{"title":"Is Intersubjectivity Proven? A Reply to Khrennikov and to QBists","authors":"Hervé Zwirn","doi":"10.1007/s10773-024-05806-5","DOIUrl":"10.1007/s10773-024-05806-5","url":null,"abstract":"<div><p>In two recent papers Khrennikov [1, 2] uses what he calls Ozawa’s intersubjectivity theorem [3] to claim that intersubjectivity is necessarily verified in quantum mechanics and to criticize QBism and more generally all interpretations that are perspectival. In agreement with two previous QBist’s papers [4, 5], I explain here why Khrennikov’s proof is not valid but in contrast with one of these papers [5], I criticize the way intersubjectivity is dealt with in QBism.</p></div>","PeriodicalId":597,"journal":{"name":"International Journal of Theoretical Physics","volume":"63 10","pages":""},"PeriodicalIF":1.3,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142447389","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}
{"title":"A Heuristic Philosophical Discourse on Various Applications of Abstract Differential Geometry in Quantum Gravity Research","authors":"Ioannis Raptis","doi":"10.1007/s10773-024-05798-2","DOIUrl":"10.1007/s10773-024-05798-2","url":null,"abstract":"<div><p>In the present paper, we outline and expound the fundamental and novel qualitative-cum-philosophical premises, principles, ideas, concepts, constructions and results that originate from our ongoing research project of applying the new conceptual panoply and the novel technical machinery of Abstract Differential Geometry (ADG) to various persistently outstanding issues in Quantum Gravity (QG) (Mallios and Raptis Int. J. Theor. Phys. <b>40</b>, 1885, 2004, Int. J. Theor. Phys. <b>41</b>, 1857, 2002, Int. J. Theor. Phys. <b>42</b>, 1479, 2003; Raptis Int. J. Theor. Phys. <b>39</b>, 1233, 2000, Int. J. Theor. Phys. <b>39</b>, 1703, 2000, Int. J. Theor. Phys. <b>45</b>, 79, 2006, Int. J. Theor. Phys. <b>46</b>, 688, 2007, Int. J. Theor. Phys. <b>45</b>, 1495, 2006, Int. J. Theor. Phys. <b>46</b>, 1137, 2007, Int. J. Theor. Phys. <b>46</b>, 3009, 2007; Raptis and Zapatrin Int. J. Theor. Phys. <b>39</b>, 1, 2000, Class. Quant. Grav. <b>20</b>, 4187, 2001). This paper may be regarded as a sequel to the paper (Raptis Int. J. Theor. Phys. <b>46</b>, 3009, 2007) in the aftermath of the paper (Raptis 2024), which is currently in press. At the end of the paper, we discuss the potential philosophical repercussions of two possible future research routes that the main stream of our applications of ADG to QG may bifurcate towards in view of three independent, but overlapping, research papers that are currently under development (Raptis 2024a, 2024b, 2024c).</p></div>","PeriodicalId":597,"journal":{"name":"International Journal of Theoretical Physics","volume":"63 10","pages":""},"PeriodicalIF":1.3,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142447388","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}
{"title":"Unify the Effect of Anharmonicity in Double-Wells and Anharmonic Oscillators","authors":"Wei Fan, Huipeng Zhang, Zhuoran Li","doi":"10.1007/s10773-024-05774-w","DOIUrl":"10.1007/s10773-024-05774-w","url":null,"abstract":"<div><p>We study the effect of anharmonicity in quantum anharmonic oscillators, by computing the energy gap between the ground and the 1st excited state using the numerical bootstrap method. Based on perturbative formulae of limiting coupling regimes, we propose a qualitative formula of the energy gap across all coupling values. Except detailed numerical parameter values, the proposed formula has the same functional form as the formula of ground state level splitting of double-well potentials, proposed recently in arXiv:2308.11516. This unifies the effects of anharmonicity in both the anharmonic oscillators and the double-well potentials, although the underlying physical process of them are completely different. We give an explanation of this connection of their anharmonicity from the viewpoint of quantum phase transitions. This connection is justified up to the octic anharmonicities by the numerical bootstrap.</p></div>","PeriodicalId":597,"journal":{"name":"International Journal of Theoretical Physics","volume":"63 10","pages":""},"PeriodicalIF":1.3,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142438727","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}
{"title":"Strings and Missing Wormhole Entanglement","authors":"Andrei T. Patrascu","doi":"10.1007/s10773-024-05807-4","DOIUrl":"10.1007/s10773-024-05807-4","url":null,"abstract":"<div><p>I show that holographic calculations of entanglement entropy in the context of AdS bulk space modified by wormhole geometries provide the expected entanglement magnitude. This arises in the context of string theory by means of additional geometric structure that is seen by the string in its bulk evolution. The process can be described as a net entanglement flow towards stringy geometry. I make use of the fact that as opposed to quantum field theory, strings have additional winding mode states around small extra dimensions which modify the area computation given by the standard application of the Ryu-Takayanagi entanglement entropy formula.</p></div>","PeriodicalId":597,"journal":{"name":"International Journal of Theoretical Physics","volume":"63 10","pages":""},"PeriodicalIF":1.3,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142438726","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}
Hao Yuan, Guo-Zhu Pan, Xin-Xia Xue, Mao-sheng Yang, Gang Zhang
{"title":"Optimizing Asymmetric Bidirectional Controlled Quantum Teleportation Via Eight-Qubit Cluster State","authors":"Hao Yuan, Guo-Zhu Pan, Xin-Xia Xue, Mao-sheng Yang, Gang Zhang","doi":"10.1007/s10773-024-05785-7","DOIUrl":"10.1007/s10773-024-05785-7","url":null,"abstract":"<div><p>Utilizing eight-qubit cluster state as quantum channel, an asymmetric bidirectional controlled quantum teleportation scheme [Int. J. Theor. Phys. <b>61</b>, 17 (2022)] is proposed recently. In the scheme, there are two agents Alice and Bob, and a controller Chris. Under the supervision and assistance of Charlie, Alice can teleport an unknown two-qubit entangled state to Bob, and at the same time, Bob can also teleport an unknown three-qubit pure state to Alice. However, a three-qubit GHZ-state measurement and a four-qubit GHZ-state measurement are required in the scheme. In this paper, we have optimized it so that only single-qubit measurements need to be performed to complete the same quantum task.</p></div>","PeriodicalId":597,"journal":{"name":"International Journal of Theoretical Physics","volume":"63 10","pages":""},"PeriodicalIF":1.3,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142438689","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}
{"title":"Interacting Dark Energy and Its Implications for Unified Dark Sector","authors":"Pradosh Keshav MV, Kenath Arun","doi":"10.1007/s10773-024-05794-6","DOIUrl":"10.1007/s10773-024-05794-6","url":null,"abstract":"<div><p>Alternative dark energy models were proposed to address the limitation of the standard concordance model. Though different phenomenological considerations of such models are widely studied, scenarios where they interact with each other remain unexplored. In this context, we study interacting dark energy scenarios (IDEs), incorporating alternative dark energy models. The three models that are considered in this study are time-varying <span>(varvec{Lambda })</span>, Generalized Chaplygin Gas (GCG), and K-essence. Each model includes an interaction rate <span>(varvec{Gamma })</span> to quantify energy density transfer between dark energy and matter. Among them, GCG coupled with an interaction term shows promising agreement with the observed TT power spectrum, particularly for <span>(varvec{ell <70})</span>, when <span>(varvec{Gamma })</span> falls within a specific range. The K-essence model (<span>(varvec{Gamma le 0.1})</span>) is more sensitive to <span>(varvec{Gamma })</span> due to its non-canonical kinetic term, while GCG (<span>(varvec{Gamma ge 1.02})</span>) and the time-varying <span>(varvec{Lambda })</span> (<span>(varvec{Gamma le 0.01})</span>) models are less sensitive, as they involve different parameterizations. We then derive a general condition when the non-canonical scalar field <span>(varvec{phi })</span> (with a kinetic term <span>(varvec{X}^{varvec{n}})</span>) interacts with GCG. This has not been investigated in general form before. We find that current observational constraints on IDEs suggest a unified scalar field with a balanced regime, where it mimics quintessence behavior at <span>(varvec{n<1})</span> and phantom behavior at <span>(varvec{n>1})</span>. We outline a strong need to consider alternative explanations and fewer parameter dependencies while addressing potential interactions in the dark sector.</p></div>","PeriodicalId":597,"journal":{"name":"International Journal of Theoretical Physics","volume":"63 10","pages":""},"PeriodicalIF":1.3,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142438744","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}
{"title":"The Role of MOND Theory in Cosmological Paradigms Under q-Statistics","authors":"M. Senay","doi":"10.1007/s10773-024-05801-w","DOIUrl":"10.1007/s10773-024-05801-w","url":null,"abstract":"<div><p>This study is about the consequences of fermionic <i>q</i>-deformation on Friedmann equations and its effects on cosmology within the framework of Verlinde’s entropic gravity proposal. We begin by examining the thermodynamic properties of <i>q</i>-deformed fermion gas model in two-dimensional space. We then extend our research to derive modified Friedmann equations using the Friedmann-Robertson-Walker (FRW) metric to study cosmological dynamics using <i>q</i>-deformed MOND theory. The study describes the effective energy density, pressure, and equation of state of dark energy within this modified framework. Finally, by providing an analytical expression for the effective density parameter of dark energy, we provide valuable insights into the interaction between quantum deformation and cosmological events.</p></div>","PeriodicalId":597,"journal":{"name":"International Journal of Theoretical Physics","volume":"63 10","pages":""},"PeriodicalIF":1.3,"publicationDate":"2024-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142411490","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}
{"title":"Applications of Geometric Coherence with Respect to Mutually Unbiased Bases","authors":"Yue Sun, Ming-Jing Zhao, Peng-Tong Li","doi":"10.1007/s10773-024-05799-1","DOIUrl":"10.1007/s10773-024-05799-1","url":null,"abstract":"<div><p>Quantum coherence plays a vital role in quantum mechanics and quantum information processing. It can be regarded as an important quantum resource. Quantification of coherence is the core of coherence theory. Geometric coherence as a measure of coherence can effectively quantify quantum coherence. In this work, we drive complementarity relations for geometric coherence with respect to mutually unbiased bases. Then, based on these complementarity relations, we establish the relationship between geometric coherence and quantum steering.</p></div>","PeriodicalId":597,"journal":{"name":"International Journal of Theoretical Physics","volume":"63 10","pages":""},"PeriodicalIF":1.3,"publicationDate":"2024-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142411497","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}
{"title":"A Study on Qubit Information Masking","authors":"Si-Ming Zhang, Jin-Ze Li, Ming-Hao Wang, Bin Zhou","doi":"10.1007/s10773-024-05802-9","DOIUrl":"10.1007/s10773-024-05802-9","url":null,"abstract":"<div><p>Quantum information masking, a technique that encodes quantum information into the correlations within a composite system while ensuring that individual subsystems carry no discernible information about the input states, plays a pivotal role in various quantum information processing tasks including quantum bit commitment, quantum secret sharing, quantum error correction, and quantum communication. In this paper, we specifically study the masking of qubit information. Our results demonstrate that when the first qubit of a multi-qubit system is tasked with masking an arbitrary qubit state, the residual qubits are incapable of masking any qubit state. Intriguingly, under these conditions, a recovery operation exists that can perfectly restore the input qubits from the residual qubits, suggesting a complete transfer of the input information to these qubits. Moreover, we uncover that the correlation between the first qubit and the residual qubits might redundantly contain partial information of input qubits. This phenomenon of information redundancy offers a novel viewpoint for comprehending quantum error-correcting codes and contributes to a deeper understanding of quantum information theory. This study elucidates fundamental aspects of quantum information theory and may have potential applications in quantum information processing.</p></div>","PeriodicalId":597,"journal":{"name":"International Journal of Theoretical Physics","volume":"63 10","pages":""},"PeriodicalIF":1.3,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142411393","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}