{"title":"Emergent quantum entanglement from higher-dimensional geometric projection","authors":"Allan Kardec Barros","doi":"10.1016/j.rinp.2026.108761","DOIUrl":"10.1016/j.rinp.2026.108761","url":null,"abstract":"<div><div>Quantum entanglement is a fundamental feature of quantum mechanics whose underlying physical interpretation remains an active topic of research. In this work, we develop a geometric framework in which physical states are defined on a higher-dimensional manifold, while observable states arise from a coherent projection onto spacetime. We show that this projection acts as a non-injective mapping on the underlying state space, generically transforming separable higher-dimensional states into non-factorizable states in the observable domain. Within this construction, quantum correlations emerge as a consequence of interference along a compact dimension. Under conditions of phase coherence, the standard quantum predictions are recovered. More generally, incomplete phase cancellation leads to a well-defined deviation from the usual correlation structure, introducing an additional angular dependence beyond the relative measurement settings. The framework is fully compatible with the standard quantum formalism at the effective level, while extending it through experimentally testable predictions. Moreover, the presence of such additional angular contributions provides a potential signature of projection-induced effects. These results suggest that quantum entanglement may be interpreted as an emergent phenomenon associated with geometric projection, in which effective nonlocal behavior arises from dimensional reduction.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"89 ","pages":"Article 108761"},"PeriodicalIF":4.6,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149156532","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}
Results in PhysicsPub Date : 2026-10-01Epub Date: 2026-09-29DOI: 10.1016/j.rinp.2026.108762
Arif Setiawansyah, Muhammad Ikhlas Arsul, Rony Abdi Syahputra
{"title":"Molecular modeling of AI-assisted structural modification of β-caryophyllene toward improved binding to xanthine oxidase: DFT and molecular dynamics studies","authors":"Arif Setiawansyah, Muhammad Ikhlas Arsul, Rony Abdi Syahputra","doi":"10.1016/j.rinp.2026.108762","DOIUrl":"10.1016/j.rinp.2026.108762","url":null,"abstract":"<div><div>β-Caryophyllene (BCP) is a naturally occurring sesquiterpene that has been reported to exhibit measurable inhibitory activity against xanthine oxidase (XO); however, its potency remains inferior to that of allopurinol. To overcome this limitation, artificial intelligence-assisted structural modification was employed to optimize the BCP scaffold for enhanced XO inhibition. A series of artificial intelligence (AI)-generated BCP derivatives were systematically evaluated using density functional theory (DFT), molecular docking, molecular dynamics (MD) simulations, and binding free energy calculations. All modified derivatives demonstrated improved binding affinity toward XO compared to native BCP and oxypurinol, indicating the effectiveness of AI-assisted scaffold optimization. Among these, the CD1 and CD4 derivatives exhibited the most favorable interaction profiles. DFT analysis revealed that structural modifications significantly altered electronic descriptors, including HOMO–LUMO energy gaps and charge distribution, favoring stronger intermolecular interactions. MD simulations over 250 ns confirmed stable complex formation for both CD1-XO and CD4-XO systems, characterized by preserved enzyme compactness, reduced active-site flexibility, stable solvent-accessible surface area, but lower persistent hydrogen bonding relative to oxypurinol. Binding free energy calculations further supported these findings, with MM-PBSA energies of −23.4 kcal/mol for CD4 for CD1 and −21.7 kcal/mol for CD1, compared to −16.3 kcal/mol for oxypurinol. Overall, the integrated computational results demonstrate that AI-assisted modification of the BCP scaffold substantially enhances its interaction stability and binding affinity toward xanthine oxidase, highlighting CD4 as the most promising natural product-derived lead for further experimental investigation.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"89 ","pages":"Article 108762"},"PeriodicalIF":4.6,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149156533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}
Results in PhysicsPub Date : 2026-09-01Epub Date: 2026-08-29DOI: 10.1016/j.rinp.2026.108746
D R Harsh, Narender Khatri, Suneet Kumar Awasthi
{"title":"Hybrid machine learning approach for mode classification of SPR driven photonic crystal fiber sensor","authors":"D R Harsh, Narender Khatri, Suneet Kumar Awasthi","doi":"10.1016/j.rinp.2026.108746","DOIUrl":"10.1016/j.rinp.2026.108746","url":null,"abstract":"<div><div>The present simulation work highlights how to apply the hybrid machine learning (HML) approach for the classification of fundamental core (FC) and surface plasmon polariton (SPP) modes of surface plasmon resonance (SPR) driven photonic crystal fibre (PCF) sensor loaded separately with analytes of refractive index (RI) variation from 1.37 to 1.40 in steps 0.01. The simulation results are obtained from COMSOL Multiphysics 6.0 software in addition to Python and MATLAB software. The core region of the sensor is made up of fused silica, which is surrounded by two types of cladding air holes. The plasmonic layer of gold is selected for excitation of surface plasmons, which is an essential requirement for accurate detection of various samples under consideration. The unwanted reflections from the outer surface of the design are protracted by perfectly matched layer (PML). For implementation of ML approach, the simulated data set containing real and imaginary parts of effective refractive indices (<span><math><msub><mrow><mi>n</mi></mrow><mrow><mi>e</mi><mi>f</mi><mi>f</mi></mrow></msub></math></span>) of FC and SPP modes corresponding to both x- and y-polarization cases of the optimized structure loaded with sample of RI 1.38, operating between the wavelength range <span><math><mrow><mn>0.60</mn><mspace></mspace><mi>μ</mi><mi>m</mi></mrow></math></span> to <span><math><mrow><mn>1.0</mn><mspace></mspace><mi>μ</mi><mi>m</mi></mrow></math></span> in steps of 0.005, <span><math><mrow><mi>μ</mi><mi>m</mi></mrow></math></span> is created. This dataset is further utilized by the proposed HML model consisted of central neural network (CNN), XG- Boost and support vector machine (SVM). The stratified 5-fold cross-validation technique is used for training, validation, and testing purposes necessary for mode classification. The performance of the proposed sensor is comprehensively examined with the help of 6 statistical performance metrics (1) accuracy, (2) precision, (3) recall, (4) specificity, (5) F1-Score(F1-S) and (7) Matthews Correlation Coefficient (MCC). The proposed SPR-driven PCF biosensor loaded with analyte of RI 1.39 exhibits the highest sensitivity of 13500 nm/RIU. The implementation of the HML model yields an accuracy of 99.69 ± 0.62%, F1-score of 99.81 ± 0.37% and MCC value of 98.97 ± 2.06%, indicating its excellent mode classification performance. This idea of implementing the HML model for classification of modes of SPR-driven PCF sensor may be further extended in the design and development of future biosensors for sensing of various biological or chemical samples of RI variation from 1.37 to 1.40.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"88 ","pages":"Article 108746"},"PeriodicalIF":4.6,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148950007","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}
Results in PhysicsPub Date : 2026-09-01Epub Date: 2026-08-26DOI: 10.1016/j.rinp.2026.108747
Abdullah Efe Yildiz, Emre Ozan Polat
{"title":"Geometry-Controlled exciton selectivity in monolayer MoS2 using plasmonic hollow nanocavities","authors":"Abdullah Efe Yildiz, Emre Ozan Polat","doi":"10.1016/j.rinp.2026.108747","DOIUrl":"10.1016/j.rinp.2026.108747","url":null,"abstract":"<div><div>Spectral control of closely spaced excitonic transitions is central to valleytronic photonics, nanoscale light sources, and wavelength-encoded sensing. In monolayer molybdenum disulfide (MoS<sub>2</sub>), the A and B excitons are separated by only tens of meV, making selective excitonic emission control both fundamentally important and technologically challenging. Although plasmon-enhanced emission of monolayer MoS<sub>2</sub> has been widely investigated, systematic control of the relative A- and B-excitonic contributions using vertically oriented hollow nanocavities remains relatively underexplored. Here, we numerically investigate plasmon-enhanced excitonic emission from monolayer MoS<sub>2</sub> coupled to vertically oriented hollow gold nanocylindrical cavities through a dielectric spacer. The proposed approach is especially attractive because the exciton selectivity is achieved through purely geometrical and dielectric design, without requiring external fields, chemical doping, or complex active tuning schemes. Using Density Functional Theory and Finite-difference time-domain simulations combined with a photoluminescence-rate framework enable separate evaluation of excitation enhancement, radiative decay modification, nonradiative quenching, and excitonic charge generation. By tuning the cavity aspect ratio, the localized surface plasmon resonance is selectively aligned with either the A- or B-exciton transition, while the spacer thickness and refractive index regulate near-field coupling and the local density of optical states. Under optimized conditions, the excitation rate is enhanced up to 4.34-fold and the radiative decay rate by more than 40-fold, yielding photoluminescence enhancements of 143.85 and 87.27 for the A and B excitons, respectively. The cavity also redistributes the relative excitonic peak intensities, producing exciton-selective peak ratios up to 2.4 times higher than those of bare MoS<sub>2</sub>. These results establish hollow plasmonic nanocavities as geometry-tunable platforms for exciton-selective emission and charge-generation control in atomically thin semiconductors.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"88 ","pages":"Article 108747"},"PeriodicalIF":4.6,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148950028","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}
Results in PhysicsPub Date : 2026-09-01Epub Date: 2026-09-02DOI: 10.1016/j.rinp.2026.108748
V. Yeylagh Beygi, S. Mahdavifar, F. Mirmasoudi, S. Ahadpour
{"title":"Energy storage limits and criticality in an anisotropic three-spin interaction quantum battery","authors":"V. Yeylagh Beygi, S. Mahdavifar, F. Mirmasoudi, S. Ahadpour","doi":"10.1016/j.rinp.2026.108748","DOIUrl":"10.1016/j.rinp.2026.108748","url":null,"abstract":"<div><div>We investigate the charging dynamics and energy storage performance of a quantum battery defined by an anisotropic spin-1/2 XY chain, extended by the inclusion of anisotropic three-spin interactions. This system possesses a rich ground-state phase diagram featuring non-trivial gapped topological phases separated by quantum critical lines. Utilizing the fermionization technique, we exactly diagonalize the Hamiltonian and analyze the charging process through a quantum quench from an initial state to a final Hamiltonian configuration. We derive an analytical expression for the upper bound of the stored energy. Significantly, we find that the steady-state stored energy is consistently equal to one-half of the corresponding theoretical maximum throughout the parameter regime investigated. Furthermore, we provide analytical approximations for the charging peak and demonstrate that the underlying topological phase transitions leave distinct and detectable signatures in the charging landscape. These results establish a framework for understanding the interplay between ground-state topology, quantum criticality, and nonequilibrium energy-storage dynamics in quantum spin-chain batteries.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"88 ","pages":"Article 108748"},"PeriodicalIF":4.6,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148950027","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}
Results in PhysicsPub Date : 2026-09-01Epub Date: 2026-09-03DOI: 10.1016/j.rinp.2026.108750
Alain Bourdier
{"title":"Relativistic asymmetry of diffraction patterns induced by Lorentz transformation","authors":"Alain Bourdier","doi":"10.1016/j.rinp.2026.108750","DOIUrl":"10.1016/j.rinp.2026.108750","url":null,"abstract":"<div><div>We investigate how the Fraunhofer diffraction pattern produced by a slit is modified under a Lorentz transformation. Starting from the diffraction of a monochromatic wave in the slit rest frame, we analyze the angular redistribution of the diffracted intensity in a second inertial frame moving uniformly perpendicular to the slit axis. Two configurations are considered: normal incidence and oblique incidence of the incoming wave.</div><div>In the laboratory frame, the diffraction pattern exhibits the usual symmetric distribution of minima around the central maximum when expressed in the appropriate angular variable. After transformation to the moving frame, this symmetry is generally lost: the diffraction profile becomes asymmetric with respect to the direction of maximum intensity. We show that this effect arises from relativistic aberration of light and reflects a nonlinear reparametrization of the angular coordinates rather than a modification of the diffraction process itself. In particular, the positions of the diffraction extrema remain well defined under Lorentz transformation, even though their angular spacing becomes distorted in the boosted frame.</div><div>We further show that the sinc-type functional form of the Fraunhofer diffraction pattern is preserved under the Lorentz transformation. The observed asymmetry therefore originates entirely from the relativistic mapping between observation angle and transverse wave-vector component. These results provide a simple illustration of how a familiar wave-optics phenomenon is reshaped by special relativity, and they may be relevant to numerical or experimental studies of radiation patterns in moving optical or plasma systems.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"88 ","pages":"Article 108750"},"PeriodicalIF":4.6,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148950075","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}