Physics of the Dark Universe最新文献

{"title":"Topological electroweak phase transition","authors":"V.K. Oikonomou","doi":"10.1016/j.dark.2025.101908","DOIUrl":"10.1016/j.dark.2025.101908","url":null,"abstract":"<div><div>In this work we shall consider the effects of a non-trivial topology on the effective potential of the Standard Model. Specifically we shall assume that the spacetime topology is <span><math><mrow><msup><mrow><mi>S</mi></mrow><mrow><mn>1</mn></mrow></msup><mo>×</mo><msup><mrow><mi>R</mi></mrow><mrow><mn>3</mn></mrow></msup></mrow></math></span> and we shall calculate the Standard Model effective potential for such a topological spacetime. As we demonstrate, for small values of the compact dimension radius, the electroweak symmetry is unbroken, but for a critical length and beyond, the electroweak symmetry is broken, since the configuration space of the Higgs field contains an additional energetically favorable minimum, compared to the minimum at the origin. The two minima are separated by a barrier, thus a phase transition can occur, via quantum tunneling, which mimics a first order phase transition. This is a non-thermal phase transition, similar possibly to quantum Hall topological phase transitions, hence in the context of this scenario, the electroweak symmetry breaking does not require a high temperature to occur. The present scenario does not rely on the occurrence of the inflationary era, only on the expansion of the Universe, however we briefly discuss the freezing of the superhorizon terms in <span><math><mrow><msup><mrow><mi>S</mi></mrow><mrow><mn>1</mn></mrow></msup><mo>×</mo><msup><mrow><mi>R</mi></mrow><mrow><mn>3</mn></mrow></msup></mrow></math></span> spacetime, if inflation occurred. We also investigate the large scale differences of the gravitational potential due to the non-trivial topology. Finally, we briefly mention the distinct inequivalent topological field configurations that can exist due to the non-trivial topology, which are classified by the first Stieffel class which in the case at hand is <span><math><mrow><msup><mrow><mi>H</mi></mrow><mrow><mn>1</mn></mrow></msup><mrow><mo>(</mo><msup><mrow><mi>S</mi></mrow><mrow><mn>1</mn></mrow></msup><msup><mrow><mo>×</mo><mi>R</mi></mrow><mrow><mn>3</mn></mrow></msup><mo>,</mo><msub><mrow><mi>Z</mi></mrow><mrow><mover><mrow><mn>2</mn></mrow><mrow><mo>˜</mo></mrow></mover></mrow></msub><mo>)</mo></mrow><mo>=</mo><msub><mrow><mi>Z</mi></mrow><mrow><mn>2</mn></mrow></msub></mrow></math></span>, so even and odd elements can exist. We also briefly qualitatively discuss how a topologically induced electroweak phase transition can yield primordial gravitational waves.</div></div>","PeriodicalId":48774,"journal":{"name":"Physics of the Dark Universe","volume":"48 ","pages":"Article 101908"},"PeriodicalIF":5.0,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143824136","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":"Interpreting decisions of lightweight CNN for glitch classification in time frequency images: Enhancing black-hole merger detection in O1 and O2 runs","authors":"Mohan Bhandari ,&nbsp;Aakash Thapa ,&nbsp;Loknath Regmi ,&nbsp;Suman Sharma ,&nbsp;Prakash Paudel ,&nbsp;Sanjeeb Prasad Panday","doi":"10.1016/j.dark.2025.101914","DOIUrl":"10.1016/j.dark.2025.101914","url":null,"abstract":"<div><div>When two or more black holes orbit each other and eventually merge, they emit significant gravitational waves (GWs). These waves, first detected by the Laser Interferometer Gravitational-Wave Observatory (LIGO), are recorded as time-frequency patterns in images. The classification and segmentation of these images are critical for conducting precise and thorough characterization analysis. A robust signal-versus-glitch classifier designed for automation must be capable of handling diverse background noise, new glitch sources, overlapping glitches, and gravitational wave signals. This challenge becomes increasingly complex, particularly in the context of lightweight devices. This study introduce a custom CNN architecture with 1,899,318 trainable parameters, effectively classifying 22 categories in the Gravity Spy dataset (time-frequency domain visualization of glitch behavior), even with the challenging nature of glitches, and showing strong resistance to adversarial attacks. Under 10-fold cross-validation, the proposed model achieves training, validation, and test precisions of 96.02 ± 0.2790%, 96.54 ± 0.2840%, and 97.12 ± 0.5240% respectively. Cohen’s Kappa score is 0.978 ± 0.0038, while the Mann–Whitney and Kruskal–Wallis tests yield 3214.59 ± 1.44 and 0.155 ± 0.003, respectively. The minimum AUC-ROC is 0.98 for only two categories—‘No Glitch’ and ‘None of the Above’ — whereas all other categories have higher values. To enhance interpretability, local interpretable model-agnostic explanations are generated as helping information for the decision-making process, and the model is deployed in a web environment using Flask to evaluate the performance of the CNN model when implemented on lightweight devices.</div></div>","PeriodicalId":48774,"journal":{"name":"Physics of the Dark Universe","volume":"48 ","pages":"Article 101914"},"PeriodicalIF":5.0,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143808375","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":"Tracing cosmic evolution through Weyl-Type f(Q,T) gravity model: Theoretical analysis and observational validation","authors":"Rahul Bhagat ,&nbsp;Francisco Tello-Ortiz ,&nbsp;B. Mishra","doi":"10.1016/j.dark.2025.101913","DOIUrl":"10.1016/j.dark.2025.101913","url":null,"abstract":"<div><div>We investigate the cosmic evolution of the Universe across different cosmological epochs in exponential Weyl-type <span><math><mrow><mi>f</mi><mrow><mo>(</mo><mi>Q</mi><mo>,</mo><mi>T</mi><mo>)</mo></mrow></mrow></math></span> gravity model. The theoretical analysis involves a detailed dynamical system approach, where we define dimensionless variables and derive a system of linear differential equations to identify critical points corresponding to the radiation, matter and de Sitter phase. The findings show the transition from deceleration to acceleration phase, with stable and unstable critical points characterizing different phases of the evolution. In the second phase, we validate the theoretical predictions by using observational data from Cosmic Chronometers (<span><math><mrow><mi>C</mi><mi>C</mi></mrow></math></span>) and Pantheon<span><math><msup><mrow></mrow><mrow><mo>+</mo></mrow></msup></math></span> datasets. We constrain the Hubble parameter and subsequently analyzed the other cosmological and geometrical parameters. In this approach also, the transition from deceleration to acceleration has been confirmed, with the equation of state (EoS) parameter approaching <span><math><mi>Λ</mi></math></span>CDM at late times. The model behavior in both the approaches show the late-time behavior of the Universe. The evolutionary behavior of both the Hubble parameter and distance modulus, reinforcing the reliability of the Weyl-type <span><math><mrow><mi>f</mi><mrow><mo>(</mo><mi>Q</mi><mo>,</mo><mi>T</mi><mo>)</mo></mrow></mrow></math></span> gravity model in describing the expansion history of Universe.</div></div>","PeriodicalId":48774,"journal":{"name":"Physics of the Dark Universe","volume":"48 ","pages":"Article 101913"},"PeriodicalIF":5.0,"publicationDate":"2025-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143786036","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":"New insights on a sign-switching Λ","authors":"Jorge F. Soriano ,&nbsp;Shimon Wohlberg ,&nbsp;Luis A. Anchordoqui","doi":"10.1016/j.dark.2025.101911","DOIUrl":"10.1016/j.dark.2025.101911","url":null,"abstract":"<div><div>The proposal for a sudden sign-switching cosmological constant <span><math><mi>Λ</mi></math></span> in the local universe, emulating a phase transition from anti-de Sitter (AdS) to de Sitter (dS) space, has markedly revamped the fit to observational data and lays out a propitious framework for ameliorating major cosmological tensions, such as the <span><math><msub><mrow><mi>H</mi></mrow><mrow><mn>0</mn></mrow></msub></math></span> and <span><math><msub><mrow><mi>S</mi></mrow><mrow><mn>8</mn></mrow></msub></math></span> tensions. This proposal is widely known as <span><math><msub><mrow><mi>Λ</mi></mrow><mrow><mi>s</mi></mrow></msub></math></span>CDM. We investigate the possibility that <span><math><mi>Λ</mi></math></span> does not only flip sign at the transition but has also different curvature radii in the AdS and dS phases. We show that the critical redshift of the transition <span><math><msub><mrow><mi>z</mi></mrow><mrow><mi>c</mi></mrow></msub></math></span> is strongly correlated with the vacuum energy in the AdS phase <span><math><msub><mrow><mi>Ω</mi></mrow><mrow><msub><mrow><mi>Λ</mi></mrow><mrow><mo>−</mo></mrow></msub></mrow></msub></math></span>, and that these two variables do not correlate strongly with the other cosmological parameters. We also show that the cost of adding an additional parameter to the <span><math><msub><mrow><mi>Λ</mi></mrow><mrow><mi>s</mi></mrow></msub></math></span>CDM cosmological model does not improve the goodness of fit. Armed with our findings, we demonstrate that for a proper choice of <span><math><msub><mrow><mi>z</mi></mrow><mrow><mi>c</mi></mrow></msub></math></span>, the vacuum energy in the dS phase may not necessarily be <span><math><mrow><mo>−</mo><msub><mrow><mi>Ω</mi></mrow><mrow><msub><mrow><mi>Λ</mi></mrow><mrow><mo>−</mo></mrow></msub></mrow></msub></mrow></math></span>, for comparable degree of conformity between the model prediction and experimental data.</div></div>","PeriodicalId":48774,"journal":{"name":"Physics of the Dark Universe","volume":"48 ","pages":"Article 101911"},"PeriodicalIF":5.0,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143786113","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":"Dynamical dark energy in the light of DESI 2024 data","authors":"Nandan Roy","doi":"10.1016/j.dark.2025.101912","DOIUrl":"10.1016/j.dark.2025.101912","url":null,"abstract":"<div><div>The latest findings from the DESI (Dark Energy Spectroscopic Instrument) data release 1 (DR1) Adame et al. (2024), combined with data from the cosmic microwave background and supernovae, suggest a preference for dynamical dark energy over the cosmological constant. This study has considered the Chevallier–Polarski–Linder (CPL) parameterization for the dark energy equation of state (EoS) and has indicated a possible phantom barrier crossing in the recent past. Despite CPL being the most commonly used parameterization, recent research has pointed out issues with its prior selection and parameter degeneracies. In this paper, we propose an alternative two-parameter parameterization of the dark energy equation of state (EoS). At higher redshifts, it behaves like the cosmological constant. At redshifts <span><math><mrow><mi>z</mi><mo>&lt;</mo><mn>1</mn></mrow></math></span>, this parameterization closely approximates the CPL form but deviates from it at lower redshifts. Our findings also indicate that the current value of the EoS of dark energy resembles quintessence, with evidence of a recent crossing of the phantom barrier, supporting the conclusions in Adame et al. (2024). Furthermore, our model significantly reduces the Hubble tension to about <span><math><mrow><mn>2</mn><mo>.</mo><mn>8</mn><mi>σ</mi></mrow></math></span> when compared to Hubble Space Telescope and SH0ES data Riess et al. (2022), and to <span><math><mrow><mn>1</mn><mo>.</mo><mn>6</mn><mi>σ</mi></mrow></math></span> with standardized TRGB and Type Ia supernova data Scolnic et al. (2023). Bayesian model selection using Bayes factors and Akaike Information Criteria (ACI), shows a strong preference for our parameterization over the <span><math><mi>Λ</mi></math></span> CDM model, aligned with the DESI2024 results and favoring dynamical dark energy.</div></div>","PeriodicalId":48774,"journal":{"name":"Physics of the Dark Universe","volume":"48 ","pages":"Article 101912"},"PeriodicalIF":5.0,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143783988","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}

{"title":"Dynamical stability analysis of entropy corrected cosmic model through zero-point length","authors":"Abdul Jawad ,&nbsp;Nadeem Azhar ,&nbsp;Ruqia Arif ,&nbsp;Mohammad Mahtab Alam ,&nbsp;Sanjar Shaymatov","doi":"10.1016/j.dark.2025.101898","DOIUrl":"10.1016/j.dark.2025.101898","url":null,"abstract":"<div><div>In this work, we explore a modified entropy expression that incorporates zero-point length correction terms. This approach is inspired by string T-duality, with the zero-point length correction applied to the gravitational potential. The modified form of the Friedmann equations is derived by applying the first law of thermodynamics at the apparent horizon within the framework of the Friedmann–Robertson–Walker (FRW) universe. These modified equations describe the universes evolution with zero-point length corrections embedded in the entropy term. By examining both linear and non-linear interactions, we identify various evolutionary phases of the universe through a detailed analysis of the critical points. Additionally, we investigate the stability and attractor properties of accelerating solutions using eigenvalues and phase space diagrams. Within this framework, different cases of the equation of state parameter such as quintessence, <span><math><mi>Λ</mi></math></span>CDM and phantom regimes, along with dust and radiation are discussed. The evolution plots for these scenarios are analyzed, demonstrating consistency with current observational values of the standard density parameters.</div></div>","PeriodicalId":48774,"journal":{"name":"Physics of the Dark Universe","volume":"48 ","pages":"Article 101898"},"PeriodicalIF":5.0,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143786114","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":"GrayHawk: A public code for calculating the Gray Body Factors of massless fields around spherically symmetric Black Holes","authors":"Marco Calzá","doi":"10.1016/j.dark.2025.101900","DOIUrl":"10.1016/j.dark.2025.101900","url":null,"abstract":"<div><div>We introduce and describe <span>GrayHawk</span>, a publicly available Mathematica-based tool designed for the efficient computation of gray-body factors for spherically symmetric and asymptotically flat black holes. This program provides users with a rapid and reliable means to compute gray-body factors for massless fields with spin <span><math><mrow><mi>s</mi><mo>=</mo><mn>0</mn><mo>,</mo><mn>1</mn><mo>/</mo><mn>2</mn><mo>,</mo><mn>1</mn><mo>,</mo><mn>2</mn></mrow></math></span> in modes specified by the angular quantum number <span><math><mi>l</mi></math></span>, given a black hole metric and the associated parameter values.</div><div><span>GrayHawk</span> is preloaded with seven different black hole metrics, offering immediate applicability to a variety of theoretical models. Additionally, its modular structure allows users to extend its functionality easily by incorporating alternative metrics or configurations. This versatility makes <span>GrayHawk</span> a powerful and adaptable resource for researchers studying black hole physics and Hawking radiation.</div><div>The codes described in this work are publicly available at <span><span>https://github.com/marcocalza89/GrayHawk</span><svg><path></path></svg></span> <figure><img></figure>.</div></div>","PeriodicalId":48774,"journal":{"name":"Physics of the Dark Universe","volume":"48 ","pages":"Article 101900"},"PeriodicalIF":5.0,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143768143","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":"Viscous fluid cosmology: A path to cosmic acceleration","authors":"Z. Yousaf","doi":"10.1016/j.dark.2025.101884","DOIUrl":"10.1016/j.dark.2025.101884","url":null,"abstract":"<div><div>In this study we consider three different cases for bulk viscous fluids, to investigate its coefficients in the background of four dimensional Einstein-Gauss–Bonnet gravity. For this purpose, we assume a bulk viscous matter in a Flat Friedmann-Lemaître-Robertson-Walker metric and derived the associated field equations that govern our system.We approximate the parameter and bulk viscosity coefficient values using set of data taken from BAO, Pantheon and <span><math><mrow><mi>H</mi><mrow><mo>(</mo><mi>z</mi><mo>)</mo></mrow></mrow></math></span>. We then investigate the asymptotic nature of our model using the phase space analysis. Our model successfully captures the progression of the cosmos from a matter-dominated decelerated era to a uniform de-sitter accelerated era for our considered cases. Additionally, we investigate the physical behavior of the parameters involved in state finder, pressure exerted by different components of universe, and the equation of state (EoS). We examine that accelerated expansion era is accurately detected by the effective EoS parameter, <span><math><mrow><mn>4</mn><mi>D</mi></mrow></math></span> Einstein-Gauss–Bonnet parameters and surface pressure component, which exhibit negative behavior in the existence of bulk viscosity.</div></div>","PeriodicalId":48774,"journal":{"name":"Physics of the Dark Universe","volume":"48 ","pages":"Article 101884"},"PeriodicalIF":5.0,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143783987","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":"An overview of what current data can (and cannot yet) say about evolving dark energy","authors":"William Giarè ,&nbsp;Tariq Mahassen ,&nbsp;Eleonora Di Valentino ,&nbsp;Supriya Pan","doi":"10.1016/j.dark.2025.101906","DOIUrl":"10.1016/j.dark.2025.101906","url":null,"abstract":"<div><div>Recent measurements of Baryon Acoustic Oscillations (BAO) and distance moduli from Type Ia supernovae suggest a preference for Dynamical Dark Energy (DDE) scenarios characterized by a time-varying equation of state (EoS). This focused review assesses its robustness across independent measurements and surveys. Using the Chevallier-Polarski-Linder (CPL) parametrization to describe the evolution of the DE EoS, we analyze over 35 dataset combinations, incorporating Planck Cosmic Microwave Background (CMB) anisotropies, three independent Type Ia supernova (SN) catalogs (PantheonPlus, Union3, DESY5), BAO measurements from DESI and SDSS, and expansion rate measurements <span><math><mrow><mi>H</mi><mrow><mo>(</mo><mi>z</mi><mo>)</mo></mrow></mrow></math></span> inferred from the relative ages of massive, passively evolving galaxies at early cosmic times known as Cosmic Chronometers (CC). This review has two main objectives: first, to evaluate the statistical significance of the DDE preference across different dataset combinations, which incorporate varying sources of information. Specifically, we consider cases where only low-redshift probes are used in different combinations, others where individual low-redshift probes are analyzed together with CMB data, and finally, scenarios where high- and low-redshift probes are included in all possible independent combinations. Second, we provide a reader-friendly synthesis of what the latest cosmological and astrophysical probes can (and cannot yet) reveal about DDE. Overall, our findings highlight that combinations that <em>simultaneously</em> include PantheonPlus SN and SDSS BAO significantly weaken the preference for DDE. However, intriguing hints supporting DDE emerge in combinations that do not include DESI-BAO measurements: SDSS-BAO combined with SN from Union3 and DESY5 (with and without CMB) support the preference for DDE.</div></div>","PeriodicalId":48774,"journal":{"name":"Physics of the Dark Universe","volume":"48 ","pages":"Article 101906"},"PeriodicalIF":5.0,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143791158","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":"Missing matter in galaxies as a neutrino mixing effect","authors":"Antonio Capolupo ,&nbsp;Salvatore Capozziello ,&nbsp;Gabriele Pisacane ,&nbsp;Aniello Quaranta","doi":"10.1016/j.dark.2025.101894","DOIUrl":"10.1016/j.dark.2025.101894","url":null,"abstract":"<div><div>We show that, in the framework of quantum field theory in curved spacetime, the semiclassical energy–momentum tensor of the neutrino flavor vacuum fulfills the equation of state of dust and cold dark matter. We consider spherically symmetric spacetimes, and we demonstrate that, within the weak field approximation, the flavor vacuum contributes as a Yukawa correction to the Newtonian potential. This corrected potential may account for the flat rotation curves of spiral galaxies. In this perspective, neutrino mixing could contribute to dark matter.</div></div>","PeriodicalId":48774,"journal":{"name":"Physics of the Dark Universe","volume":"48 ","pages":"Article 101894"},"PeriodicalIF":5.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143761262","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}