物理与天体物理最新文献

{"title":"Study and reproducibility of the SRG/eROSITA background with particle rejection on and off","authors":"Emanuele Perinati,&nbsp;Michael J. Freyberg,&nbsp;Christian Pommranz,&nbsp;Muhammed M. Serim,&nbsp;Michael C. H. Yeung,&nbsp;Konrad Dennerl,&nbsp;Susanne Friedrich,&nbsp;Chris Tenzer,&nbsp;Andrea Santangelo","doi":"10.1007/s10686-025-10028-6","DOIUrl":"10.1007/s10686-025-10028-6","url":null,"abstract":"<div><p>For more than six years SRG/eROSITA is the first X-ray telescope in orbit around the second Lagrangian point in the Sun-Earth system. We present an updated study of its instrumental background based on cleaned data and improved simulations, carried out in the framework of the eROSITA Background Working Group. We examine the standard observing mode with minimum ionising particle rejection switched on as well as the non-standard mode with particle rejection switched off, which was set from time to time to monitor the overflow trails and patterns left by energetic particles. We show that, in the first case, Geant4 simulations allow to reproduce quite well the measured residual background; in the second case, the simulations support the analysis and interpretation of the observed trails, though a peculiar feature of a small minority of them, which apparently split from one frame into the next one, is not reflected in the simulations.</p></div>","PeriodicalId":551,"journal":{"name":"Experimental Astronomy","volume":"60 2","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10686-025-10028-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145256088","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}

{"title":"Gluing two discs into a spindle","authors":"Hyojoong Kim,&nbsp;Nakwoo Kim","doi":"10.1007/JHEP10(2025)085","DOIUrl":"10.1007/JHEP10(2025)085","url":null,"abstract":"<p>We construct AdS₅ × Σ solutions of <i>D</i> = 7 gauged supergravity where Σ is a disc, also known as a half-spindle, and uplift them to <i>D</i> = 11 supergravity. By computing the anomaly polynomial of the M5-brane theory compactified on Σ in the large <i>N</i> limit, we obtain the off-shell central charges of the dual <i>D</i> = 4, <span>( mathcal{N} )</span> = 1 superconformal field theory to disc solutions. These off-shell central charges decompose into contributions from the center and the boundary of the disc and are referred to as the gravitational blocks for disc. By suitably gluing the gravitational blocks for two discs along their boundaries, we reproduce the off-shell central charge for a single spindle.</p>","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2025 10","pages":""},"PeriodicalIF":5.5,"publicationDate":"2025-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP10(2025)085.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145256266","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Correction to: String black holes as particle accelerators to arbitrarily high energy","authors":"Parthapratim Pradhan","doi":"10.1007/s10509-025-04506-8","DOIUrl":"10.1007/s10509-025-04506-8","url":null,"abstract":"","PeriodicalId":8644,"journal":{"name":"Astrophysics and Space Science","volume":"370 10","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145256514","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":"Inhomogeneous phase stiffness in two-dimensional s -wave disordered superconductors","authors":"Sudipta Biswas, A. Taraphder, Sudhansu S. Mandal","doi":"10.1103/p64s-p7t3","DOIUrl":"https://doi.org/10.1103/p64s-p7t3","url":null,"abstract":"","PeriodicalId":20082,"journal":{"name":"Physical Review B","volume":"6 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145260635","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Thermoelectric properties of magic angle twisted bilayer graphene–superconductor heterojunction: Effect of valley polarization and trigonal warping","authors":"Kamalesh Bera, Pritam Chatterjee, Priyanka Mohan, Arijit Saha","doi":"10.1103/1t3m-2sjn","DOIUrl":"https://doi.org/10.1103/1t3m-2sjn","url":null,"abstract":"","PeriodicalId":20082,"journal":{"name":"Physical Review B","volume":"37 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145260682","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Symmetry breaking and thermal phase transition of the spin-1 quantum magnet with SU(3) symmetry on the simple cubic lattice","authors":"Nils Caci, Dominik Chudy, Pablo Daniel Mendez Mariscal, Daniel Ueltschi, Stefan Wessel","doi":"10.1103/w7fl-yy4x","DOIUrl":"https://doi.org/10.1103/w7fl-yy4x","url":null,"abstract":"Using a combined analysis from Poisson-Dirichlet and symmetry-breaking calculations as well as quantum Monte Carlo simulations, we examine the ordered phase and the thermal phase transition of the three-dimensional spin-1 quantum magnet on the simple cubic lattice with bilinear and biquadratic interactions and SU(3) internal symmetry. We obtain exact results for the order parameter distribution function that compare well to the quantum Monte Carlo data. Furthermore, based on a detailed finite-size analysis, we provide evidence that the thermal melting transition at the SU(3) point is either weakly first order in this system or, if continuous, it falls beyond the unitarity bounds of conformal field theory.","PeriodicalId":20082,"journal":{"name":"Physical Review B","volume":"33 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145260736","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Nature of the Pc states from compositeness criteria","authors":"Yu-Fei Wang, Chao-Wei Shen, Deborah Rönchen, Ulf-G. Meißner, Bing-Song Zou, Fei Huang","doi":"10.1103/fvjn-8bl9","DOIUrl":"https://doi.org/10.1103/fvjn-8bl9","url":null,"abstract":"Based on a coupled-channel approach, we investigate the structures of four P&lt;/a:mi&gt;c&lt;/a:mi&gt;&lt;/a:msub&gt;&lt;/a:math&gt; states through compositeness criteria. Toward a more precise description of the states, we have obtained refined fit results of the LHCb data on the &lt;c:math xmlns:c=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"&gt;&lt;c:mi&gt;J&lt;/c:mi&gt;&lt;c:mo&gt;/&lt;/c:mo&gt;&lt;c:mi&gt;ψ&lt;/c:mi&gt;&lt;c:mi&gt;p&lt;/c:mi&gt;&lt;/c:math&gt; invariant mass distribution of the &lt;e:math xmlns:e=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"&gt;&lt;e:msubsup&gt;&lt;e:mi mathvariant=\"normal\"&gt;Λ&lt;/e:mi&gt;&lt;e:mi&gt;b&lt;/e:mi&gt;&lt;e:mn&gt;0&lt;/e:mn&gt;&lt;/e:msubsup&gt;&lt;e:mo stretchy=\"false\"&gt;→&lt;/e:mo&gt;&lt;e:mi&gt;J&lt;/e:mi&gt;&lt;e:mo&gt;/&lt;/e:mo&gt;&lt;e:mi&gt;ψ&lt;/e:mi&gt;&lt;e:mi&gt;p&lt;/e:mi&gt;&lt;e:msup&gt;&lt;e:mi&gt;K&lt;/e:mi&gt;&lt;e:mo&gt;−&lt;/e:mo&gt;&lt;/e:msup&gt;&lt;/e:math&gt; decay. Allowing for the fact that each of the four &lt;i:math xmlns:i=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"&gt;&lt;i:msub&gt;&lt;i:mi&gt;P&lt;/i:mi&gt;&lt;i:mi&gt;c&lt;/i:mi&gt;&lt;/i:msub&gt;&lt;/i:math&gt; states couples strongly to a nearby &lt;k:math xmlns:k=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"&gt;&lt;k:mi&gt;S&lt;/k:mi&gt;&lt;/k:math&gt;-wave channel, three criteria on the compositeness/elementariness are adopted in this study: the pole-counting rule, the spectral density function, and the Gamow wave function. Compositeness information is extracted from the scattering amplitudes and the pole parameters (pole positions and residues), without any preconceived assumptions on the nature of the &lt;m:math xmlns:m=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"&gt;&lt;m:msub&gt;&lt;m:mi&gt;P&lt;/m:mi&gt;&lt;m:mi&gt;c&lt;/m:mi&gt;&lt;/m:msub&gt;&lt;/m:math&gt; states and without any dependence on the model parametrization. Consistently within the framework of all the three methods, it has been found that the &lt;o:math xmlns:o=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"&gt;&lt;o:msub&gt;&lt;o:mi&gt;P&lt;/o:mi&gt;&lt;o:mi&gt;c&lt;/o:mi&gt;&lt;/o:msub&gt;&lt;o:mo stretchy=\"false\"&gt;(&lt;/o:mo&gt;&lt;o:mn&gt;4312&lt;/o:mn&gt;&lt;o:mo stretchy=\"false\"&gt;)&lt;/o:mo&gt;&lt;o:mn&gt;1&lt;/o:mn&gt;&lt;o:mo&gt;/&lt;/o:mo&gt;&lt;o:msup&gt;&lt;o:mn&gt;2&lt;/o:mn&gt;&lt;o:mo&gt;−&lt;/o:mo&gt;&lt;/o:msup&gt;&lt;/o:math&gt; is mainly composed by &lt;s:math xmlns:s=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"&gt;&lt;s:mover accent=\"true\"&gt;&lt;s:mi&gt;D&lt;/s:mi&gt;&lt;s:mo stretchy=\"false\"&gt;¯&lt;/s:mo&gt;&lt;/s:mover&gt;&lt;s:msub&gt;&lt;s:mi mathvariant=\"normal\"&gt;Σ&lt;/s:mi&gt;&lt;s:mi&gt;c&lt;/s:mi&gt;&lt;/s:msub&gt;&lt;/s:math&gt;, &lt;x:math xmlns:x=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"&gt;&lt;x:msub&gt;&lt;x:mi&gt;P&lt;/x:mi&gt;&lt;x:mi&gt;c&lt;/x:mi&gt;&lt;/x:msub&gt;&lt;x:mo stretchy=\"false\"&gt;(&lt;/x:mo&gt;&lt;x:mn&gt;4380&lt;/x:mn&gt;&lt;x:mo stretchy=\"false\"&gt;)&lt;/x:mo&gt;&lt;x:mn&gt;3&lt;/x:mn&gt;&lt;x:mo&gt;/&lt;/x:mo&gt;&lt;x:msup&gt;&lt;x:mn&gt;2&lt;/x:mn&gt;&lt;x:mo&gt;−&lt;/x:mo&gt;&lt;/x:msup&gt;&lt;/x:math&gt; by &lt;bb:math xmlns:bb=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"&gt;&lt;bb:mover accent=\"true\"&gt;&lt;bb:mi&gt;D&lt;/bb:mi&gt;&lt;bb:mo stretchy=\"false\"&gt;¯&lt;/bb:mo&gt;&lt;/bb:mover&gt;&lt;bb:msubsup&gt;&lt;bb:mi mathvariant=\"normal\"&gt;Σ&lt;/bb:mi&gt;&lt;bb:mi&gt;c&lt;/bb:mi&gt;&lt;bb:mo&gt;*&lt;/bb:mo&gt;&lt;/bb:msubsup&gt;&lt;/bb:math&gt;, while the &lt;gb:math xmlns:gb=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"&gt;&lt;gb:msub&gt;&lt;gb:mi&gt;P&lt;/gb:mi&gt;&lt;gb:mi&gt;c&lt;/gb:mi&gt;&lt;/gb:msub&gt;&lt;gb:mo stretchy=\"false\"&gt;(&lt;/gb:mo&gt;&lt;gb:mn&gt;4440&lt;/gb:mn&gt;&lt;gb:mo stretchy=\"false\"&gt;)&lt;/gb:mo&gt;&lt;gb:mn&gt;1&lt;/gb:mn&gt;&lt;gb:mo&gt;/&lt;/gb:mo&gt;&lt;gb:msup&gt;&lt;gb:mn","PeriodicalId":20167,"journal":{"name":"Physical Review D","volume":"20 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145260764","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Revisiting a family of five-dimensional charged, rotating black holes","authors":"Marcos R. A. Arcodía, Gaston Giribet, Juan Laurnagaray","doi":"10.1103/zsds-3262","DOIUrl":"https://doi.org/10.1103/zsds-3262","url":null,"abstract":"In the absence of a higher-dimensional analog to the Kerr-Newman black hole, five-dimensional Einstein-Maxwell theory with a Chern-Simons term has become a natural setting for studying charged, stationary solutions. A prominent example is the Chong-Cvetič-Lü-Pope (CCLP) solution, which describes a nonextremal black hole with electric charge and two independent angular momenta. This solution has been widely studied, and generalizations have been proposed. In this paper, we revisit a large family of five-dimensional black hole solutions to Einstein-Maxwell-Chern-Simons (EMCS) field equations, which admits to be written in terms of a generalized Plebański-Demiański ansatz and includes the CCLP and the Kerr-NUT-anti–de Sitter solutions as particular cases. We show that the complete family can be brought to the CCLP form by means of a suitable coordinate transformation and a complex redefinition of parameters. Then, we compute the conserved charges associated to the CCLP form of the metric by analyzing the near-horizon asymptotic symmetries. We show that the zero mode of the near-horizon charges exactly match the result of the Komar integrals.","PeriodicalId":20167,"journal":{"name":"Physical Review D","volume":"1 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145260804","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Hydrogen Molecular Dissociation Driven by Quantum Light","authors":"Xiaoxiao Long, Peizeng Li, Yunquan Liu","doi":"10.1103/4g87-d9j3","DOIUrl":"https://doi.org/10.1103/4g87-d9j3","url":null,"abstract":"","PeriodicalId":20069,"journal":{"name":"Physical review letters","volume":"1 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145260837","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Analysis of the influence of axial mass eccentricity on polar axis offset characteristics in superconducting rotors of magnetic levitation system","authors":"Quansheng Sun ,&nbsp;Chunyan Cui ,&nbsp;Xinning Hu ,&nbsp;Xian Yi ,&nbsp;Yuan Zhang ,&nbsp;Feifei Niu ,&nbsp;Qiuliang Wang","doi":"10.1016/j.physc.2025.1354790","DOIUrl":"10.1016/j.physc.2025.1354790","url":null,"abstract":"<div><div>The superconducting rotor magnetic levitation system has great potential in high-precision angular velocity sensing, but its accuracy and stability are limited by the coupling of multiple physical fields. To address the unresolved synergistic interaction between axial mass eccentricity and aspheric factors, this study systematically quantifies how material heterogeneity affects axial mass eccentricity. On this basis, a multi-field coupling dynamic model of superconducting rotor is established, and the dynamic characteristics of polar axis offset under the single action of axial mass eccentricity and its synergistic effect with aspheric factors such as centrifugal deformation are deeply analyzed, and quantitatively characterizes the nonlinear increase in drift velocity arising from their coupling. The results show that axial mass eccentricity is the core interference source of polar axis drift. The proposed quantitative models of material-induced eccentricity and its coupling with deformation offer a new theoretical foundation for drift prediction, compensation control, and structural optimization of high-precision superconducting rotors.</div></div>","PeriodicalId":20159,"journal":{"name":"Physica C-superconductivity and Its Applications","volume":"638 ","pages":"Article 1354790"},"PeriodicalIF":1.0,"publicationDate":"2025-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145269172","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}