Physical Review D最新文献

{"title":"Interpolating between spacelike and timelike entanglement via holography","authors":"Carlos Nunez, Dibakar Roychowdhury","doi":"10.1103/x3zd-llsx","DOIUrl":"https://doi.org/10.1103/x3zd-llsx","url":null,"abstract":"We study entanglement entropy for slablike regions in quantum field theories, using their holographic duals. We focus on the transition between spacelike and timelike separations. By considering boosted subsystems in conformal and confining holographic backgrounds, we identify two classes of extremal surfaces; real ones (Type I) and complex surfaces (Type II). These interpolate between the usual Ryu-Takayanagi prescription and its timelike generalizations. We derive explicit expressions for the entanglement entropy in both conformal and confining cases and discuss their behavior across phase transitions, and null limits. The interpolation between Type I and Type II surfaces reveals an analytic continuation of the extremal surface across the light cone. Our analysis also finds the existence of a Ryu-Takayanagi surface (Type I) even for timelike separations in the confining field theory case.","PeriodicalId":20167,"journal":{"name":"Physical Review D","volume":"8 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145209582","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":"Constraints on QCD-based equation of state of quark stars from neutron star maximum mass, radius, and tidal deformability observations","authors":"João V. Zastrow, Jonas P. Pereira, Rafael C. R. de Lima, Jorge E. Horvath","doi":"10.1103/254t-zjzk","DOIUrl":"https://doi.org/10.1103/254t-zjzk","url":null,"abstract":"","PeriodicalId":20167,"journal":{"name":"Physical Review D","volume":"102 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145209585","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":"Overlapping signals in next-generation gravitational wave observatories: A recipe for selecting the best parameter estimation technique","authors":"Tomasz Baka, Harsh Narola, Justin Janquart, Anuradha Samajdar, Tim Dietrich, Chris Van Den Broeck","doi":"10.1103/8cwp-mxcd","DOIUrl":"https://doi.org/10.1103/8cwp-mxcd","url":null,"abstract":"","PeriodicalId":20167,"journal":{"name":"Physical Review D","volume":"75 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145209584","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":"Phase transition and nuclear symmetry energy from neutron star observations: Constraints in light of PSR J0614-3329","authors":"Shao-Peng Tang, Yong-Jia Huang, Yi-Zhong Fan","doi":"10.1103/bmsk-8n85","DOIUrl":"https://doi.org/10.1103/bmsk-8n85","url":null,"abstract":"","PeriodicalId":20167,"journal":{"name":"Physical Review D","volume":"11 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145209587","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":"String loop origin for dark radiation and superheavy dark matter in type IIB compactifications","authors":"Vasileios Basiouris","doi":"10.1103/cngs-jfjb","DOIUrl":"https://doi.org/10.1103/cngs-jfjb","url":null,"abstract":"In this article, we study the significance of string loop corrections, in a perturbative moduli stabilization scenario, focusing on their role in unraveling the origin of dark radiation in the late cosmological epoch and their correlation to dark matter. More specifically, a detailed analysis is provided in which the mass hierarchy of the normalized fields in the Kähler moduli sector is determined by the scales of the integer fluxes and the quantum corrections. Furthermore, we compute the previously underestimated contributions to the decay rates of moduli to axions, which behave as dark radiation, highlighting their connection to the aforementioned higher-order corrections. Two contrasting reheating scenarios (low scale and high scale) are provided, depending on the decay rate of the longest-lived particle into the Standard Model degrees of freedom through a Giudice-Masiero mechanism, while the effective number of neutrino species Δ</a:mi>N</a:mi>eff</a:mi></a:msub></a:math> remains below the respective bounds. Finally, a nonthermal dark matter scenario is proposed based on the decays of heavy scalar fields, where the main production mechanisms are investigated, leading to a dark matter candidate mass ranging from a few GeV up to <d:math xmlns:d=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><d:msup><d:mn>10</d:mn><d:mn>12</d:mn></d:msup><d:mtext> </d:mtext><d:mtext> </d:mtext><d:mi>GeV</d:mi></d:math>.","PeriodicalId":20167,"journal":{"name":"Physical Review D","volume":"18 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145202943","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":"Generative flow networks in covariant loop quantum gravity","authors":"Joseph Bunao, Pietropaolo Frisoni, Athanasios Kogios, Jared Wogan","doi":"10.1103/pvqh-3t24","DOIUrl":"https://doi.org/10.1103/pvqh-3t24","url":null,"abstract":"","PeriodicalId":20167,"journal":{"name":"Physical Review D","volume":"69 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145209591","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":"Deep learning optimal molecular scintillators for dark matter direct detection","authors":"Cameron Cook, Carlos Blanco, Juri Smirnov","doi":"10.1103/89gh-lwcd","DOIUrl":"https://doi.org/10.1103/89gh-lwcd","url":null,"abstract":"Direct searches for sub-GeV dark matter are limited by the intrinsic quantum properties of the target material. In this proof-of-concept study, we argue that this problem is particularly well suited for machine learning. We demonstrate that a simple neural architecture consisting of a variational autoencoder and a multilayer perceptron can efficiently generate unique molecules with desired properties. In specific, the energy threshold and signal (quantum) efficiency determine the minimum mass and cross section to which a detector can be sensitive. Organic molecules present a particularly interesting class of materials with intrinsically anisotropic electronic responses and O</a:mi>(</a:mo>few</a:mi>)</a:mo></a:mtext></a:mtext>eV</a:mi></a:mrow></a:math> excitation energies. However, the space of possible organic compounds is intractably large, which makes traditional database screening challenging. We adopt excitation energies and proxy transition matrix elements as target properties learned by our network. Our model is able to generate molecules that are not in even the most expansive quantum chemistry databases and predict their relevant properties for high-throughput and efficient screening. Following a massive generation of novel molecules, we use clustering analysis to identify some of the most promising molecular structures that optimize the desired molecular properties for dark matter detection.","PeriodicalId":20167,"journal":{"name":"Physical Review D","volume":"5 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145202942","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":"Black hole-accretion disk collision in general relativity: Axisymmetric simulations","authors":"Alan Tsz-Lok Lam, Masaru Shibata, Kyohei Kawaguchi, Joaquin Pelle","doi":"10.1103/m2tv-l3z8","DOIUrl":"https://doi.org/10.1103/m2tv-l3z8","url":null,"abstract":"Motivated by recent discoveries of X-ray quasiperiodic eruptions, we revisit the collision of a black hole and an accretion disk. Assuming that they are orbiting a supermassive black hole in orthogonal orbits, we perform a general relativistic simulation of the collision, varying the relative velocity V</a:mi>0</a:mn></a:msub></a:math> from <c:math xmlns:c=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><c:mn>0.032</c:mn><c:mi>c</c:mi></c:math> to <e:math xmlns:e=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><e:mn>0.2</e:mn><e:mi>c</e:mi></e:math> (where <g:math xmlns:g=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><g:mi>c</g:mi></g:math> is the speed of light) with a variety of disk thickness and a realistic local density profile for the disk. Our findings indicate that the mass of the outflow matter from the disk, <i:math xmlns:i=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><i:msub><i:mi>m</i:mi><i:mrow><i:mi>ej</i:mi></i:mrow></i:msub></i:math>, is slightly less than the expected value. Meanwhile, the typical energy associated with this outflow <k:math xmlns:k=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><k:msub><k:mi>E</k:mi><k:mrow><k:mi>ej</k:mi></k:mrow></k:msub></k:math> is <m:math xmlns:m=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><m:mo>∼</m:mo><m:msub><m:mi>m</m:mi><m:mrow><m:mi>ej</m:mi></m:mrow></m:msub><m:msubsup><m:mi>V</m:mi><m:mn>0</m:mn><m:mn>2</m:mn></m:msubsup></m:math>. Thus, the predicted peak luminosity from disk flares is approximately equal to the Eddington luminosity of the black hole, whereas the peak time and duration of the flares, which are <o:math xmlns:o=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><o:mo>∝</o:mo><o:msubsup><o:mi>m</o:mi><o:mrow><o:mi>ej</o:mi></o:mrow><o:mrow><o:mn>1</o:mn><o:mo>/</o:mo><o:mn>2</o:mn></o:mrow></o:msubsup></o:math>, are shorter than that previously believed. We also demonstrate that the property of the outflow matter induced by the incoming and outgoing stages of the black hole collision is appreciably different. We find that a high mass accretion rate onto the black hole from the disk persists for a timescale of <q:math xmlns:q=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><q:mo>∼</q:mo><q:msup><q:mn>10</q:mn><q:mn>6</q:mn></q:msup></q:math> Schwarzschild time of the black hole after the collision for <s:math xmlns:s=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><s:msub><s:mi>V</s:mi><s:mn>0</s:mn></s:msub><s:mo>/</s:mo><s:mi>c</s:mi><s:mo>≲</s:mo><s:mn>0.1</s:mn></s:math>, making this long-term accretion onto the black hole the dominant emission process for black hole-disk collision events. Implications of these results are discussed.","PeriodicalId":20167,"journal":{"name":"Physical Review D","volume":"98 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145209592","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":"J/ψ polarization and pT distribution in cc¯ associated hadroproduction at O(αs5)","authors":"Qi-Ming Feng, Cong-Feng Qiao","doi":"10.1103/htrt-26ws","DOIUrl":"https://doi.org/10.1103/htrt-26ws","url":null,"abstract":"The quarkonium production in association with a heavy-quark pair of the same flavor was found to play an important role in various production schemes and provide a distinctive signature that could be studied in experiment. Within the nonrelativistic QCD framework, we perform the first complete calculation of the hadroproduction process g</a:mi>g</a:mi>→</a:mo>J</a:mi>/</a:mo>ψ</a:mi>+</a:mo>c</a:mi>c</a:mi>¯</a:mo></a:mover></a:math> at the next-to-leading order (NLO) in the expansion of strong coupling constant <f:math xmlns:f=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><f:msub><f:mi>α</f:mi><f:mi>s</f:mi></f:msub></f:math>. The result tells us that the NLO corrections substantially enhance the color-singlet yield and alter the predicted polarization patterns and, hence, lead to a better agreement with experimental data across the <h:math xmlns:h=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><h:msub><h:mi>p</h:mi><h:mi>T</h:mi></h:msub></h:math> spectrum. In contrast to charm-quark fragmentation, the fixed-order <j:math xmlns:j=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><j:mi>J</j:mi><j:mo>/</j:mo><j:mi>ψ</j:mi></j:math> and <l:math xmlns:l=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><l:mi>c</l:mi><l:mover accent=\"true\"><l:mi>c</l:mi><l:mo stretchy=\"false\">¯</l:mo></l:mover></l:math> associated production channel displays a markedly different kinematic behavior. While the inclusion of this process greatly reduces the discrepancy between color-singlet theoretical prediction and experimental measurement, a residual gap of approximately 1 order of magnitude still remains.","PeriodicalId":20167,"journal":{"name":"Physical Review D","volume":"34 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145209590","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":"Core collapse in resonant self-interacting dark matter across two decades in halo mass","authors":"Vinh Tran, Xuejian Shen, Daniel Gilman, Mark Vogelsberger, Stephanie O’Neil, Donghua Xiong, Jiayi Hu, Ziang Wu","doi":"10.1103/2p8b-qcys","DOIUrl":"https://doi.org/10.1103/2p8b-qcys","url":null,"abstract":"","PeriodicalId":20167,"journal":{"name":"Physical Review D","volume":"75 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145209595","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}