Vijay Bhatt, Surabhi Yadav, Pradip K. Jha, Aranya B. Bhattacherjee
{"title":"Optical Properties of SAW-Driven Optomechanical Nanostructure","authors":"Vijay Bhatt, Surabhi Yadav, Pradip K. Jha, Aranya B. Bhattacherjee","doi":"10.1007/s10773-024-05809-2","DOIUrl":"10.1007/s10773-024-05809-2","url":null,"abstract":"<div><p>We theoretically propose a hybrid system that can generate in the presence of surface acoustic wave tunable optical bistability, its switching characteristics as well as an approach to achieve manageable optomechanically induced transparency combining a SAW based optomechanical cavity and quantum dot. The fabrication of the system involves incorporating a planar distributed Bragg reflector of high-quality. In order to produce surface acoustic waves, interdigitated transducers can also be fabricated on the cavity’s surface. Optical nonlinearity present in the system generates the bistability and we study its characteristics. Further, we demonstrate that optomechanically induced transparency occurs when the hybrid optomechanical cavity system, a pump field and probe field are simultaneously introduced, leading to quantum interference between multiple energy-level pathways. Our system has applications in the fields of solid-state quantum systems and optical switches for processing quantum information.</p></div>","PeriodicalId":597,"journal":{"name":"International Journal of Theoretical Physics","volume":"63 10","pages":""},"PeriodicalIF":1.3,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142519001","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":"Quantum Entanglement in the Rabi Model with the Presence of the (A^{2}) Term","authors":"Zakaria Boutakka, Zoubida Sakhi, Mohamed Bennai","doi":"10.1007/s10773-024-05805-6","DOIUrl":"10.1007/s10773-024-05805-6","url":null,"abstract":"<div><p>The quantum Rabi model (QRM) is used to describe the light-matter interaction at the quantum level in Cavity Quantum Electrodynamics (Cavity QED). It consists of a two-level system (atom or qubit) coupled to a single-mode quantum field. Introducing an atom into a cavity alters the electromagnetic mode configuration within it. In the realm of Cavity QED, a notable consequence of this alteration is the emergence of a gauge-dependent diamagnetic term referred to as the <span>(A^{2})</span> contribution. In this study, we comparatively analyze the behaviors of the QRM and the influence of the <span>(A^{2})</span> term in the light-matter quantum Hamiltonian by examining the energy spectrum properties in the strong-coupling regime. We then investigate the ground state of the system, measuring its nonclassical properties via the Wigner distribution function for different photon number distributions in Fock space. Finally, we calculate the quantum entanglement in the ground state using the Von Neumann entropy. Our findings reveal that the <span>(A^{2})</span> term and the number of cavity Fock states, <i>N</i>, significantly impact the amount of the quantum entanglement, highlighting their pivotal role.</p></div>","PeriodicalId":597,"journal":{"name":"International Journal of Theoretical Physics","volume":"63 10","pages":""},"PeriodicalIF":1.3,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142518431","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":"Retraction Note: Nonlinearity, Dispersion, and Dissipation in Water Wave Dynamics: The (mathbb{B}mathbb{L}) Equation Unraveled","authors":"Mostafa M. A. Khater","doi":"10.1007/s10773-024-05813-6","DOIUrl":"10.1007/s10773-024-05813-6","url":null,"abstract":"","PeriodicalId":597,"journal":{"name":"International Journal of Theoretical Physics","volume":"63 10","pages":""},"PeriodicalIF":1.3,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142453134","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":"MOND as a Transformation Between Non-inertial Reference Frames Via Sciama’s Interpretation of Mach’s Principle","authors":"Manuel Uruena Palomo","doi":"10.1007/s10773-024-05808-3","DOIUrl":"10.1007/s10773-024-05808-3","url":null,"abstract":"<div><p>Milgrom’s Modified Newtonian Dynamics (MOND) correction to Newtonian gravity is shown to be equivalent to a more fundamental transformation between a non-inertial local reference frame and the fixed background of the observable universe, complying with Mach’s principle. Both Newton’s gravitational constant and Milgrom’s MOND acceleration parameter or scale constant are substituted for the speed of light and two varying and measurable cosmological parameters under the justification of Schrödinger’s and Sciama’s interpretation of Mach’s principle: causally connected mass and size of the universe. This Machian interpretation, free from fundamental constants and parameters with the exception of the speed of light as the speed of gravity, is based on relative field intensities of the small and large scale of the universe. The Machian MOND approximation is a necessary feature of a phenomenological theory of modified inertia which incorporates Mach’s principle in agreement with galaxy rotation curves.</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":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142452882","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":"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}