Annals of Physics最新文献_第9页

Yang–Mills extension of the Loop Quantum Gravity-corrected Maxwell equations

IF 3 3区物理与天体物理

Annals of Physics Pub Date : 2025-02-01 DOI: 10.1016/j.aop.2024.169892

G.L.L.W. Levy, J.A. Helayël-Neto

{"title":"Yang–Mills extension of the Loop Quantum Gravity-corrected Maxwell equations","authors":"G.L.L.W. Levy, J.A. Helayël-Neto","doi":"10.1016/j.aop.2024.169892","DOIUrl":"10.1016/j.aop.2024.169892","url":null,"abstract":"<div><div>In this paper, we endeavor to build up a non-Abelian formulation to describe the self-interactions of massless vector bosons in the context of Loop Quantum Gravity (LQG). To accomplish this task, we start off from the modified Maxwell equations with the inclusion of LQG corrections and its corresponding local <span><math><mrow><mi>U</mi><mrow><mo>(</mo><mn>1</mn><mo>)</mo></mrow></mrow></math></span> gauge invariance. LQG effects in the electromagnetic interactions have significant importance, as they might be adopted to describe the flight time of cosmic photons coming from very high-energy explosions in the Universe, such as events of Gamma-Ray Bursts (GRBs). These photons have energy-dependent speeds, indicating that the velocity of light in the vacuum is not constant. To carry out the extension from the Abelian to the non-Abelian scenario, we shall follow the so-called Noether current procedure, which consists in recurrently introducing self-interactions into an initially free action for vector bosons by coupling the latter to the conserved currents of a global symmetry present in the action of departure. In the end of the non-Abelianization process, the initial global symmetry naturally becomes local. Once the Yang–Mills system includes LQG correction terms, it becomes possible to analyze how quantum-gravity induced contributions show up in both the electroweak and the QCD sectors of the Standard Model, providing a set-up for phenomenological investigations that may bring about new elements to discuss Physics beyond the Standard-Model.</div></div>","PeriodicalId":8249,"journal":{"name":"Annals of Physics","volume":"473 ","pages":"Article 169892"},"PeriodicalIF":3.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143099311","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

Inflation in a scalar-vector gravity theory

IF 3 3区物理与天体物理

Annals of Physics Pub Date : 2025-02-01 DOI: 10.1016/j.aop.2024.169876

Manuel Gonzalez-Espinoza , Ramón Herrera

引用次数: 0

New canonical analysis for consistent extension of λR gravity

IF 3 3区物理与天体物理

Annals of Physics Pub Date : 2025-02-01 DOI: 10.1016/j.aop.2024.169916

Alberto Escalante, P. Fernando Ocaña-García

{"title":"New canonical analysis for consistent extension of λR gravity","authors":"Alberto Escalante, P. Fernando Ocaña-García","doi":"10.1016/j.aop.2024.169916","DOIUrl":"10.1016/j.aop.2024.169916","url":null,"abstract":"<div><div>The canonical analysis of the <span><math><mrow><mi>λ</mi><mi>R</mi></mrow></math></span> model extended with the term due to Blas, Pujolas, and Sibiryakov <span><math><mrow><mo>[</mo><mi>B</mi><mi>P</mi><mi>S</mi><mo>]</mo></mrow></math></span> is performed. The analysis is developed for any value of <span><math><mi>λ</mi></math></span>, but particular attention is paid to the point <span><math><mrow><mi>λ</mi><mo>=</mo><mfrac><mrow><mn>1</mn></mrow><mrow><mn>3</mn></mrow></mfrac></mrow></math></span> because of the closeness with linearized General Relativity [GR]. Then, we add the higher-order conformal term, the so-called Cotton-square term, to study the constraint structure of what constitutes an example of kinetic-conformal Horava’s gravity. At the conformal point, an extra second-class constraint appears; this does not arise at other values of <span><math><mi>λ</mi></math></span>. Then, the Dirac brackets are constructed, and we will observe that the <span><math><mrow><mi>λ</mi><mi>R</mi></mrow></math></span>-Cotton-square model shares the same number of degrees of freedom with linearized <span><math><mrow><mi>G</mi><mi>R</mi></mrow></math></span>.</div></div>","PeriodicalId":8249,"journal":{"name":"Annals of Physics","volume":"473 ","pages":"Article 169916"},"PeriodicalIF":3.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143098528","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Quasi-local mass on rigid or round spheres in Kerr spacetime

IF 3 3区物理与天体物理

Annals of Physics Pub Date : 2025-02-01 DOI: 10.1016/j.aop.2024.169905

Jacek Jezierski, Tomasz Smołka

引用次数: 0

Aharonov–Bohm effect in an attractive inverse-square potential

IF 3 3区物理与天体物理

Annals of Physics Pub Date : 2025-02-01 DOI: 10.1016/j.aop.2024.169902

J. Carvalho Veloso, K. Bakke

引用次数: 0

Different horizon cut-offs for Tsallis, Rényi and Sharma-Mittal holographic dark energies in Hořava-Lifshitz gravity

IF 3 3区物理与天体物理

Annals of Physics Pub Date : 2025-02-01 DOI: 10.1016/j.aop.2024.169891

Alok Sardar , Sayani Maity , Ujjal Debnath , Anirudh Pradhan

{"title":"Different horizon cut-offs for Tsallis, Rényi and Sharma-Mittal holographic dark energies in Hořava-Lifshitz gravity","authors":"Alok Sardar , Sayani Maity , Ujjal Debnath , Anirudh Pradhan","doi":"10.1016/j.aop.2024.169891","DOIUrl":"10.1016/j.aop.2024.169891","url":null,"abstract":"<div><div>This study evaluates the cosmic expansion history of the universe using Tsallis, Rényi and Sharma-Mittal holographic dark energy models in a non-flat universe. The modified field equations for logarithmic and power law entropy corrected models have been investigated in Hořava-Lifshitz gravity. We suppose the universe is filled with dark energy and interacting cold dark matter. Considering the Hubble horizon and Granda-Oliveros (GO) as infrared cut-offs, we analyze the cosmological implication of the equation of state parameter, squared sound speed, and <span><math><mrow><msub><mrow><mi>ω</mi></mrow><mrow><mi>d</mi></mrow></msub><mtext>–</mtext><msubsup><mrow><mi>ω</mi></mrow><mrow><mi>d</mi></mrow><mrow><mo>′</mo></mrow></msubsup></mrow></math></span> phase plane graphically during the cosmic evolution. By the equation of state parameters, we see how the universe evolved at different stages in the models we consider. We obtain the thawing or freezing regions by analyzing the phase plane <span><math><mrow><msub><mrow><mi>ω</mi></mrow><mrow><mi>d</mi></mrow></msub><mtext>–</mtext><msubsup><mrow><mi>ω</mi></mrow><mrow><mi>d</mi></mrow><mrow><mo>′</mo></mrow></msubsup></mrow></math></span>. We also demonstrate the classically stable or unstable behavior of the considered models by studying the squared sound speed parameter.</div></div>","PeriodicalId":8249,"journal":{"name":"Annals of Physics","volume":"473 ","pages":"Article 169891"},"PeriodicalIF":3.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143099315","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

Mass oscillations in superconducting junctions for gravitational wave emission and detection

IF 3 3区物理与天体物理

Annals of Physics Pub Date : 2025-02-01 DOI: 10.1016/j.aop.2024.169885

Victor Atanasov , Avadh Saxena

引用次数: 0

Modeling of Hybrid Baryonic-Quark Matter in f(R) Gravity with scalar potential

IF 3 3区物理与天体物理

Annals of Physics Pub Date : 2025-02-01 DOI: 10.1016/j.aop.2024.169896

Adnan Malik , Mariyah Aslam , Shahid Chaudhary , Ayesha Almas , Ghazala Kausar

{"title":"Modeling of Hybrid Baryonic-Quark Matter in f(R) Gravity with scalar potential","authors":"Adnan Malik , Mariyah Aslam , Shahid Chaudhary , Ayesha Almas , Ghazala Kausar","doi":"10.1016/j.aop.2024.169896","DOIUrl":"10.1016/j.aop.2024.169896","url":null,"abstract":"<div><div>This paper investigates the characteristics of static, anisotropic self-gravitating structures composed of baryonic matter coupled with the strange quark matter in the background of <span><math><mrow><mi>f</mi><mrow><mo>(</mo><mi>R</mi><mo>,</mo><mi>ϕ</mi><mo>,</mo><mi>X</mi><mo>)</mo></mrow></mrow></math></span> gravity. To describe the relationship between pressure and matter density for the quark matter configuration, we employ the MIT bag model. In our analysis, we articulated the system of <span><math><mrow><mi>f</mi><mrow><mo>(</mo><mi>R</mi><mo>,</mo><mi>ϕ</mi><mo>,</mo><mi>X</mi><mo>)</mo></mrow></mrow></math></span> field equations by incorporating the MIT bag model alongside a linear equation of state in a specific gravitational model. The Tolman–Kuchowicz metric potentials are used to model these fluids, and the constants are calculated by applying junction conditions, with the Schwarzschild geometry serving as the exterior solution. We thoroughly examined the physical validity of the derived solution by investigating the metric functions, matter components, energy conditions, hydrostatic equilibrium, and stability criteria. For the comprehensive graphical analysis, we fixed numerical values, including the bag constant and other parameters for nine compact star candidates. Consequently, our proposed model meets all important stability criteria and physical conditions, providing the solid basis for exploring the characteristics of hybrid stars.</div></div>","PeriodicalId":8249,"journal":{"name":"Annals of Physics","volume":"473 ","pages":"Article 169896"},"PeriodicalIF":3.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143149607","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 unital Otto heat engines: Using Kirkwood–Dirac quasi-probability for the engine’s coherence to stay alive

IF 3 3区物理与天体物理

Annals of Physics Pub Date : 2025-02-01 DOI: 10.1016/j.aop.2024.169889

Abdelkader El Makouri , Abdallah Slaoui , Rachid Ahl Laamara

{"title":"Quantum unital Otto heat engines: Using Kirkwood–Dirac quasi-probability for the engine’s coherence to stay alive","authors":"Abdelkader El Makouri , Abdallah Slaoui , Rachid Ahl Laamara","doi":"10.1016/j.aop.2024.169889","DOIUrl":"10.1016/j.aop.2024.169889","url":null,"abstract":"<div><div>In this work, we consider <em>quantum unital Otto heat engines</em>. The latter refers to the fact that both the unitaries of the adiabatic strokes and the source of the heat provided to the engine preserve the maximally mixed state. We show how to compute the cumulants of either the dephased or undephased engine. For a qubit, we give the analytical expressions of the averages and variances for arbitrary unitaries and unital channels. We do a detailed comparative study between the dephased and undephased heat engines. More precisely, we focus on the effect of the parameters on the average work and its reliability and efficiency. As a case study of unital channels, we consider a quantum projective measurement. We show on which basis we should projectively measure the qubit, either the dephased or undephased heat engine, to extract higher amounts of work, increase the latter’s reliability, and increase efficiency. Further, we show that non-adiabatic transitions <em>are not always detrimental</em> to thermodynamic quantities. Our results, we believe, are important for heat engines fueled by <em>quantum measurement</em>.</div></div>","PeriodicalId":8249,"journal":{"name":"Annals of Physics","volume":"473 ","pages":"Article 169889"},"PeriodicalIF":3.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143149608","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

Stability and thermodynamic geometry of black hole in generalized entropy framework

IF 3 3区物理与天体物理

Annals of Physics Pub Date : 2025-02-01 DOI: 10.1016/j.aop.2024.169875

Abdul Jawad , Hamza Tariq , Shahid Chaudhary , Qiang Wu

引用次数: 0