Nuclear Physics B最新文献

{"title":"Dymnikova-Schwinger GUP-corrected wormholes in f(R,Lm,T) gravity","authors":"A. Errehymy ,&nbsp;B. Turimov ,&nbsp;A. Syzdykova ,&nbsp;K. Myrzakulov ,&nbsp;N. Alessa ,&nbsp;A.-H. Abdel-Aty","doi":"10.1016/j.nuclphysb.2025.117116","DOIUrl":"10.1016/j.nuclphysb.2025.117116","url":null,"abstract":"<div><div>In this paper, we present intriguing traversable and asymptotically flat wormhole solutions within <span><math><mrow><mi>f</mi><mo>(</mo><mi>R</mi><mo>,</mo><msub><mi>L</mi><mi>m</mi></msub><mo>,</mo><mi>T</mi><mo>)</mo></mrow></math></span> gravity. We integrate our model with the gravitational analog of the Schwinger effect, describing the emergence of particle-antiparticle pairs from the vacuum. By introducing a fundamental minimal length via the generalized uncertainty principle, we establish critical constraints on matter distribution and spacetime structure. Our findings reveal how this fundamental length shapes the wormhole geometry, steepening the slope toward the throat and mitigating violations of the weak and null energy conditions. This adjustment allows the supporting matter to avoid phantom behavior at the Planck scale, suggesting a more stable configuration. We also explore the intriguing effects of gravitational lensing, showing that these exotic wormholes repel light rather than capture it. For <span><math><mi>β</mi></math></span> values ranging from 0 to 45, the deflection angle remains negative for all corresponding <span><math><mrow><mi>α</mi><mo>(</mo><msub><mi>r</mi><mrow><mi>t</mi><mi>p</mi></mrow></msub><mo>)</mo></mrow></math></span> values, indicating a repulsive gravitational force that pushes photons away from the throat. Moreover, the forces acting on the wormhole exhibit a delicate balance, demonstrating equal strength in opposing directions–an essential feature of stability. The complexity factor <span><math><msub><mi>Y</mi><mrow><mi>T</mi><mi>F</mi></mrow></msub></math></span> decreases with distance from the throat, indicating that corrections from the generalized uncertainty principle are most significant near the throat and diminish outward. Overall, our work highlights the allure of these wormhole geometries and the pivotal role of quantum effects in their formation, paving new avenues for understanding gravity and spacetime.</div></div>","PeriodicalId":54712,"journal":{"name":"Nuclear Physics B","volume":"1019 ","pages":"Article 117116"},"PeriodicalIF":2.8,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145096508","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}

{"title":"Capturing the Page curve and entanglement dynamics of black holes in quantum computers","authors":"Talal Ahmed Chowdhury ,&nbsp;Kwangmin Yu ,&nbsp;Muhammad Asaduzzaman ,&nbsp;Raza Sabbir Sufian","doi":"10.1016/j.nuclphysb.2025.117112","DOIUrl":"10.1016/j.nuclphysb.2025.117112","url":null,"abstract":"<div><div>Quantum computers are emerging technologies expected to become important tools for exploring various aspects of fundamental physics in the future. Therefore, we pose the question of whether quantum computers can help us to study the Page curve and the black hole information dynamics, which has been a key focus in fundamental physics. In this regard, we rigorously examine the qubit transport model, a toy qubit model of black hole evaporation on IBM’s superconducting quantum computers, to shed light on this question. Specifically, we implement the quantum simulation of the scrambling dynamics in black holes using an efficient random unitary circuit. Furthermore, we employ the swap-based many-body interference protocol and the randomized measurement protocol to measure the entanglement entropy of Hawking radiation qubits in this model. Finally, by incorporating quantum error mitigation techniques into our challenging implementation of entanglement entropy measurement protocols on the IBM quantum hardware, we accurately determine the Rényi entropy in the qubit transport model, thus showcasing the utility of quantum computers for future investigations of complex quantum systems.</div></div>","PeriodicalId":54712,"journal":{"name":"Nuclear Physics B","volume":"1019 ","pages":"Article 117112"},"PeriodicalIF":2.8,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145096511","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}

{"title":"Complexity, cracking and stability of non-rotating relativistic spheres with anisotropic internal stresses","authors":"Megandhren Govender ,&nbsp;Satarupa Barman ,&nbsp;Ranjan Sharma ,&nbsp;B.S. Ratanpal ,&nbsp;Keshlan S. Govinder","doi":"10.1016/j.nuclphysb.2025.117115","DOIUrl":"10.1016/j.nuclphysb.2025.117115","url":null,"abstract":"<div><div>The stability of static fluid spheres with anisotropic internal stresses is studied based on the notion of complexity as defined by Herrera [1]. We show that the gradient of pressure anisotropy is intimately linked to the fluid density. In particular, for vanishing complexity, the stability of the fluid constrains the behaviour of the fluid density. In the more general case of non-constant complexity, we show that stability is enhanced when complexity decreases.</div></div>","PeriodicalId":54712,"journal":{"name":"Nuclear Physics B","volume":"1019 ","pages":"Article 117115"},"PeriodicalIF":2.8,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145096504","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}

{"title":"Breaking of a wave perturbation via singularity formation for photon fluid in fibers with quintic nonlinearity","authors":"Hua-Ying Ren,&nbsp;Rui Guo","doi":"10.1016/j.nuclphysb.2025.117113","DOIUrl":"10.1016/j.nuclphysb.2025.117113","url":null,"abstract":"<div><div>We consider the wave breaking problem that a simple wave structure with a parabolic or cubic initial function contour propagates to the photon fluid with constant velocity and density of the Gerdjikov-Ivanov equation, and the breaking arises by forming a singularity accompanied the occurrence of a dispersive shock wave (DSW). The description of DSW is obtained by applying the Whitham modulation theory. The correspondence between physical variables and Riemann invariants is two-valued, therefore, we derive the structure of Riemann invariants and two corresponding DSWs under a parabolic or cubic initial profile, and the numerical simulation results are consistent with the theoretical solutions. Meanwhile, the laws of motion of DSWs at the small-amplitude and soliton edge are analyzed respectively.</div></div>","PeriodicalId":54712,"journal":{"name":"Nuclear Physics B","volume":"1019 ","pages":"Article 117113"},"PeriodicalIF":2.8,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145096510","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}

{"title":"Non-minimal RT coupling and its impact on inflationary evolution in f(R,T) gravity","authors":"Sohan Kumar Jha ,&nbsp;Anisur Rahaman","doi":"10.1016/j.nuclphysb.2025.117102","DOIUrl":"10.1016/j.nuclphysb.2025.117102","url":null,"abstract":"<div><div>We examine inflationary models in the <span><math><mi>f</mi><mo>(</mo><mi>R</mi><mo>,</mo><mi>T</mi><mo>)</mo></math></span> gravity framework where we have a conformal constant and an <em>RT</em>-mixing term apart from an R term. The RT-mixing term introduces non-minimal coupling between gravity and matter. We consider the exponential SUSY potential <span><math><mi>V</mi><mo>(</mo><mi>ϕ</mi><mo>)</mo><mo>=</mo><msup><mrow><mi>M</mi></mrow><mrow><mn>4</mn></mrow></msup><mrow><mo>(</mo><mn>1</mn><mo>−</mo><msup><mrow><mi>e</mi></mrow><mrow><mo>−</mo><mi>λ</mi><mi>ϕ</mi><mo>/</mo><msub><mrow><mi>M</mi></mrow><mrow><mi>p</mi><mi>l</mi></mrow></msub></mrow></msup><mo>)</mo></mrow></math></span> and a novel potential <span><math><mi>V</mi><mo>(</mo><mi>ϕ</mi><mo>)</mo><mo>=</mo><mi>λ</mi><msubsup><mrow><mi>M</mi></mrow><mrow><mi>p</mi><mi>l</mi></mrow><mrow><mn>4</mn><mo>−</mo><mn>2</mn><mi>α</mi></mrow></msubsup><msup><mrow><mi>ϕ</mi></mrow><mrow><mn>2</mn><mi>α</mi></mrow></msup><msup><mrow><mi>sin</mi></mrow><mrow><mn>2</mn></mrow></msup><mo>⁡</mo><mrow><mo>(</mo><mfrac><mrow><mi>β</mi><msubsup><mrow><mi>M</mi></mrow><mrow><mi>p</mi><mi>l</mi></mrow><mrow><mi>α</mi></mrow></msubsup></mrow><mrow><msup><mrow><mi>ϕ</mi></mrow><mrow><mi>α</mi></mrow></msup></mrow></mfrac><mo>)</mo></mrow></math></span>. With the help of COBE normalization, we constrain values of different parameters and extract the field value at the time of Hubble crossing. The end of inflation is marked by <span><math><msub><mrow><mover><mrow><mi>ϵ</mi></mrow><mrow><mo>˜</mo></mrow></mover></mrow><mrow><mi>v</mi></mrow></msub><mo>(</mo><msub><mrow><mi>ϕ</mi></mrow><mrow><mi>i</mi></mrow></msub><mo>)</mo><mo>=</mo><mn>1</mn></math></span> where <span><math><msub><mrow><mi>ϕ</mi></mrow><mrow><mi>i</mi></mrow></msub></math></span> is the field value at the end of inflation. Equipped with these values, we then move on to calculate values of spectral index <span><math><msub><mrow><mi>n</mi></mrow><mrow><mi>s</mi></mrow></msub></math></span> and tensor-to-scalar ratio <em>r</em>. Our predicted values of <span><math><msub><mrow><mi>n</mi></mrow><mrow><mi>s</mi></mrow></msub></math></span> and <em>r</em> fall within their observed values from the Planck 2018 survey and BICEP/Keck array measurement for both potential, making them plausible candidates for the inflationary model. We also display the variation of the tensor-to-scalar ratio and spectral index with the coefficient of RT-mixing term for fixed values of e-fold number. There, we find the existence of two local maxima of <span><math><msub><mrow><mi>n</mi></mrow><mrow><mi>s</mi></mrow></msub></math></span>, which occur at a negative and a positive value of <em>ξ</em>, the coefficient of <em>RT</em>-mixing term. Our analysis finds a significant impact of <em>ξ</em> on values of observables.</div></div>","PeriodicalId":54712,"journal":{"name":"Nuclear Physics B","volume":"1019 ","pages":"Article 117102"},"PeriodicalIF":2.8,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145049715","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}

{"title":"Quantum quenches with long range interactions","authors":"Marianna Sorba ,&nbsp;Nicolò Defenu ,&nbsp;Gesualdo Delfino","doi":"10.1016/j.nuclphysb.2025.117105","DOIUrl":"10.1016/j.nuclphysb.2025.117105","url":null,"abstract":"<div><div>We extend the theory of quantum quenches to the case of <em>d</em>-dimensional homogeneous systems with long range interactions. This is achieved treating the long range interactions as switched on by the quench and performing the derivation within the basis of asymptotic states of the short range interacting pre-quench theory. In this way we analytically determine the post-quench state and the one-point functions of local observables such as the order parameter. One implication is that, as in the short range case, some oscillations induced by the quench remain undamped at large times under conditions specified by the theory. This explains, in particular, why such undamped oscillations have been numerically observed also in presence of long range interactions.</div></div>","PeriodicalId":54712,"journal":{"name":"Nuclear Physics B","volume":"1019 ","pages":"Article 117105"},"PeriodicalIF":2.8,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145049714","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}

{"title":"Note on post-Minkowskian expansion and Bondi coordinates","authors":"Pujian Mao,&nbsp;Baijun Zeng","doi":"10.1016/j.nuclphysb.2025.117111","DOIUrl":"10.1016/j.nuclphysb.2025.117111","url":null,"abstract":"<div><div>In this note, we transform the linear order (at order <span><math><mi>G</mi></math></span>) metric from a system of pointlike bodies source in the post-Minkowskian expansion to the Bondi coordinates. We show that the Bondi 4-momentum and angular momentum coincide with the relativistic definitions of 4-momentum and angular momentum for the system of pointlike bodies. The angular momentum computed at the null infinity is free of supertranslation ambiguity.</div></div>","PeriodicalId":54712,"journal":{"name":"Nuclear Physics B","volume":"1019 ","pages":"Article 117111"},"PeriodicalIF":2.8,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145057166","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}

{"title":"Creation of domain-wall Skyrmions in chiral magnets","authors":"Sven Bjarke Gudnason ,&nbsp;Yuki Amari ,&nbsp;Muneto Nitta","doi":"10.1016/j.nuclphysb.2025.117106","DOIUrl":"10.1016/j.nuclphysb.2025.117106","url":null,"abstract":"<div><div>We study the capture of a magnetic Skyrmion into a domain wall (DW) structure in chiral magnets and find that in the respective ground states of the DW and the Skyrmion, they repel each other. This means that an isolated magnetic Skyrmion cannot <em>a priori</em> enter the DW and become a DW-Skyrmion. However, rotating the DW's phase away from the stable phase may cause the successful capture and hence creation of a stable bound state of a magnetic Skyrmion and a DW: the DW-Skyrmion. At certain distances, the DW may also destroy the magnetic Skyrmion by inducing shrinkage of the latter. This happens as the isolated magnetic Skyrmion has negative DMI energy, whereas the DW-Skyrmion has positive DMI energy; in a finite range from the DW, the magnetic Skyrmion can be pushed to have vanishing DMI energy, for which it collapses to a point. <em>En passant</em>, we find the possibility of pair creation of a Skyrmion anti-DW-Skyrmion pair and a creation of more than one DW-Skyrmions by a Kibble-like mechanism.</div></div>","PeriodicalId":54712,"journal":{"name":"Nuclear Physics B","volume":"1019 ","pages":"Article 117106"},"PeriodicalIF":2.8,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145061135","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}

{"title":"Neutrino magnetic moments: effective versus fundamental parameters","authors":"Christoph A. Ternes ,&nbsp;Mariam Tórtola","doi":"10.1016/j.nuclphysb.2025.117107","DOIUrl":"10.1016/j.nuclphysb.2025.117107","url":null,"abstract":"<div><div>The search for neutrino magnetic moments offers a valuable window into physics beyond the Standard Model. However, a common misconception arises in the interpretation of experimental results: the assumption that the so-called effective neutrino magnetic moment is a universal, experiment-independent quantity. In reality, this effective parameter depends on the specific characteristics of each experiment, including the neutrino source, flavor composition or energy spectrum. As a result, the effective magnetic moment derived from solar neutrino data differs fundamentally from that obtained in reactor or accelerator-based experiments. Treating these quantities as directly comparable can lead to misleading conclusions. In this work, we clarify the proper definition of the effective neutrino magnetic moment in various experimental contexts and discuss the implications of this misconception for global analyses and theoretical interpretations.</div></div>","PeriodicalId":54712,"journal":{"name":"Nuclear Physics B","volume":"1019 ","pages":"Article 117107"},"PeriodicalIF":2.8,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145096449","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}

{"title":"Observational constraints on inflationary parameters in exponential f(T) gravity with well-known potentials","authors":"Abdul Jawad ,&nbsp;Nelson Videla ,&nbsp;Abdul Malik Sultan ,&nbsp;N. Myrzakulov ,&nbsp;Ayesha Aslam ,&nbsp;Sanjar Shaymatov","doi":"10.1016/j.nuclphysb.2025.117101","DOIUrl":"10.1016/j.nuclphysb.2025.117101","url":null,"abstract":"<div><div>In this paper, we investigate the viability of an exponential <span><math><mi>f</mi><mo>(</mo><mi>T</mi><mo>)</mo></math></span> gravity for describing cosmic inflation with a canonical scalar field. In order to obtain concrete results, we use four well-known potentials such as general hilltop inflation potential, valley hybrid inflation potential, shaft potential and minimal inflation potential. For each considered potential, we evaluate the several inflationary parameters at background and perturbative levels. Then, we perform a Markov Chain Monte Carlo (MCMC) analysis to estimate the parameters of each potential model by exploring its parameter space. In addition, we plot the corresponding trajectories in the <span><math><mi>r</mi><mo>−</mo><msub><mrow><mi>n</mi></mrow><mrow><mi>s</mi></mrow></msub></math></span> and <span><math><msub><mrow><mi>α</mi></mrow><mrow><mi>s</mi></mrow></msub><mo>−</mo><msub><mrow><mi>n</mi></mrow><mrow><mi>s</mi></mrow></msub></math></span> planes. In this sense, we make the comparison with the two-marginalized joint confidence at 68% and 95% C.L. from the latest BICEP/Keck results. The results mostly show small values for the tensor -to-scalar ratio and acceptable values for the scalar spectral index, which are within the current observational bounds.</div></div>","PeriodicalId":54712,"journal":{"name":"Nuclear Physics B","volume":"1019 ","pages":"Article 117101"},"PeriodicalIF":2.8,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145049713","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}