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Overview of KAGRA : Data transfer and management

Progress of Theoretical and Experimental Physics 2023年第10期2023卷

作者： Akutsu, T Ando, M Arai, K Arai, Y Araki, S Araya, A Aritomi, N Asada, H Aso, Y Bae, S Bae, Y Baiotti, L Bajpai, R Barton, M A Cannon, K Cao, Z Capocasa, E Chan, M Chen, C Chen, K Chen, Y Chiang, C-Y Chu, H Chu, Y-K Eguchi, S Enomoto, Y Flaminio, R Fujii, Y Fujikawa, Y Fukunaga, M Fukushima, M Gao, D Ge, G Ha, S Hagiwara, A Haino, S Han, W-B Hasegawa, K Hattori, K Hayakawa, H Hayama, K Himemoto, Y Hiranuma, Y Hirata, N Hirose, E Hong, Z Hsieh, B Huang, G-Z Huang, H-Y Huang, P Huang, Y-C Huang, Y Hui, D C Y Ide, S Ikenoue, B Imam, S Inayoshi, K Inoue, Y Ioka, K Ito, K Itoh, Y Izumi, K Jeon, C Jin, H-B Jung, K Jung, P Kaihotsu, K Kajita, T Kakizaki, M Kamiizumi, M Kanda, N Kang, G Kawaguchi, K Kawai, N Kawasaki, T Kim, C Kim, J Kim, J C Kim, W S Kim, Y-M Kimura, N Kita, N Kitazawa, H Kobayashi, Y Kojima, Y Kokeyama, K Komori, K Kong, A K H Kotake, K Kozakai, C Kozu, R Kumar, R Kume, J Kuo, C Kuo, H-S Kuromiya, Y Kuroyanagi, S Kusayanagi, K Kwak, K Lee, H K Lee, H W Lee, R Leonardi, M Li, K L Lin, L C-C Lin, C-Y Lin, F-K Lin, F-L Lin, H L Liu, G C Luo, L-W Majorana, E Marchio, M Michimura, Y Mio, N Miyakawa, O Miyamoto, A Miyazaki, Y Miyo, K Miyoki, S Mori, Y Morisaki, S Moriwaki, Y Nagano, K Nagano, S Nakamura, K Nakano, H Nakano, M Nakashima, R Nakayama, Y Narikawa, T Naticchioni, L Negishi, R Quynh, L Nguyen Ni, W-T Nishizawa, A Nozaki, S Obuchi, Y Ogaki, W Oh, J J Oh, K Oh, S H Ohashi, M Ohashi, T Ohishi, N Ohkawa, M Ohta, H Okutani, Y Okutomi, K Oohara, K Ooi, C Oshino, S Otabe, S Pan, K Pang, H Parisi, A Park, J Arellano, F E Peña Pinto, I Sago, N Saito, S Saito, Y Sakai, K Sakai, Y Sakuno, Y Sasaki, Y Sato, S Sato, T Sawada, T Sekiguchi, T Sekiguchi, Y Shao, L Shibagaki, S Shimizu, R Shimoda, T Shimode, K Shinkai, H Shishido, T Shoda, A Somiya, K Son, E J Sotani, H Sugimoto, R Suresh, J Suzuki, T Tagoshi, H Takahashi, H Takahashi, R Takamori, A Takano, S Takeda, H Takeda, M Tanaka, H Tanaka, K Tanaka, T Tanioka, S Martin, E N Tapia San Telada, S Tomaru, T Tomigami, Y Tomura, T Travasso, F Trozzo, L Tsang, T Ts Gravitational Wave Science Project National Astronomical Observatory of Japan (NAOJ) 2-21-1 Osawa Mitaka City Tokyo 181-8588 Japan Advanced Technology Center National Astronomical Observatory of Japan (NAOJ) 2-21-1 Osawa Mitaka City Tokyo 181-8588 Japan Department of Physics The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-0033 Japan Research Center for the Early Universe (RESCEU) The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-0033 Japan Institute for Cosmic Ray Research (ICRR) KAGRA Observatory The University of Tokyo 5-1-5 Kashiwa-no-Ha Kashiwa City Chiba 277-8582 Japan Accelerator Laboratory High Energy Accelerator Research Organization (KEK) 1-1 Oho Tsukuba City Ibaraki 305-0801 Japan Earthquake Research Institute The University of Tokyo 1-1-1 Yayoi Bunkyo-ku Tokyo 113-0032 Japan Department of Mathematics and Physics Hirosaki University 3 Bunkyo-cho Hirosaki City Aomori 036-8561 Japan Kamioka Branch National Astronomical Observatory of Japan (NAOJ) 238 Higashi-Mozumi Kamioka-cho Hida City Gifu 506-1205 Japan The Graduate University for Advanced Studies (SOKENDAI) 2-21-1 Osawa Mitaka City Tokyo 181-8588 Japan Korea Institute of Science and Technology Information (KISTI) 245 Daehak-ro Yuseong-gu Daejeon 34141 Korea National Institute for Mathematical Sciences 70 Yuseong-daero 1689 Beon-gil Yuseong-gu Daejeon 34047 Korea International College Osaka University 1-1 Machikaneyama-cho Toyonaka City Osaka 560-0043 Japan School of High Energy Accelerator Science The Graduate University for Advanced Studies (SOKENDAI) 1-1 Oho Tsukuba City Ibaraki 305-0801 Japan Department of Astronomy Beijing Normal University No. 19 Xinjiekou Street Beijing 100875 China Department of Applied Physics Fukuoka University 8-19-1 Nanakuma Jonan Fukuoka City Fukuoka 814-0180 Japan Department of Physics Tamkang University No. 151 Yingzhuan Rd. Danshui Dist. New Taipei City 25137 Taiwan Department of Physics and Institute of Astronomy Nation

KAGRA is a newly built gravitational wave observatory, a laser interferometer with a 3 km arm length, located in Kamioka, Gifu prefecture, Japan. In this article, we describe the KAGRA data management system, i.e., recording of data, transfer from the KAGRA experiment site to computing resources, as well as data distribution to tier sites, including international sites in Taiwan and Korea. The amount of KAGRA data exceeded 1.0 PiB and increased by about 1.5 TB per day during operation in 2020. Our system has succeeded in data management, and has achieved performance that can withstand observations after 2023, that is, a transfer rate of 20 MB s-1or more and file storage of sufficient capacity for petabyte class. We also discuss the sharing of data between the global gravitational-wave detector network with other experiments, namely LIGO and Virgo. The latency, which consists of calculation of calibrated strain data and transfer time within the global network, is very important from the view of multi-messenger astronomy using gravitational waves. Real-time calbrated data delivered from the KAGRA detector site and other detectors to our computing system arrive with about 4–15 seconds of latency. These latencies are sufficiently short compared to the time taken for gravitational wave event search computations. We also established a high-latency exchange of offline calibrated data that was aggregated with a better accuracy compared with real-time data.

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Anisotropic cell growth-regulated surface micropatterns in flower petals

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Theoretical & applied Mechanics Letters 2017年第3期7卷 169-174页

作者： Xiao Huang Yu Hai Wei-Hua Xie Institute of Applied Physics and Computational Mathematics Beijing 10094 China Institute of Biomechanics and Medical Engineering AML Department of Engineering Mechanics Tsinghua University Beijing 100084 China Tsinghua University High School Beijing 100084 China Institute of Telecommunication Satellite China Academy of Space Technology Beijing 100094 China

Flower petals have not only diverse macroscopic morphologies but are rich in microscopic surface patterns, which are crucial to their biological functions. Both experimental measurements and theoretical analysis are conducted to reveal the physical mechanisms underlying the formation of minute wrinkles on flower petals. Three representative flowers, daisy, kalanchoe blossfeldiana, and Eustoma grandiflorurn, are investigated as examples. A surface wrinkling model, incorporating the measured mechanical properties and growth ratio, is used to elucidate the difference in their surface morphologies. The mismatch between the anisotropic epidermal cell growth and the isotropic secretion of surficial wax is found to dictate the surface patterns.

关键词： Growth Biomechanics Cuticle Micropattern Flower petal

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Extensions of almost-F and F-Suzuki contractions with graph and some applications to fractional calculus

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Fixed Point Theory and Applications 2016年第1期2016卷 1-14页

作者： Budhia, Lokesh Budhia Kumam, Poom Martínez-Moreno, Juan Gopal, Dhananjay Department of Applied Mathematics & Humanities S.V. National Institute of Technology Surat 395007 India Theoretical and Computational Science Center (TaCS) & Department of Mathematics King Mongkut’s University of Technology Thonburi (KMUTT) 126 Pracha Uthit Road Bang Mod Thung Khru 10140 Bangkok Thailand China Medical University No. 91 Hsueh-Shih Road Taichung Taiwan Department of Mathematics University of Jaén Campus Las Lagunillas s/n Jaén 23071 Spain

In this paper, we introduce the two new concepts of an α-type almost-F-contraction and an α-type F Suzuki contraction and prove some fixed point theorems for such mappings in a complete metric space. Some examples and an application to a nonlinear fractional differential equation are given to illustrate the usability of the new theory. © 2016, Budhia et al.

关键词： almost-F-contraction F-Suzuki contraction fixed point nonlinear fractional differential equation

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Publisher Correction: Epithelial cell plasticity drives endoderm formation during gastrulation

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Nature cell biology 2021年第8期23卷 925页

作者： Katharina Scheibner Silvia Schirge Ingo Burtscher Maren Büttner Michael Sterr Dapeng Yang Anika Böttcher Martin Irmler Johannes Beckers Filippo M Cernilogar Gunnar Schotta Fabian J Theis Heiko Lickert Institute of Diabetes and Regeneration Research Helmholtz Diabetes Center Helmholtz Zentrum München Munich Germany. Institute of Stem Cell Research Helmholtz Zentrum München Munich Germany. German Center for Diabetes Research (DZD) Munich Germany. Institute of Computational Biology Helmholtz Zentrum München Munich Germany. Developmental Biology Program Sloan Kettering Institute New York NY USA. Institute of Experimental Genetics Helmholtz Zentrum München Munich Germany. School of Life Sciences Weihenstephan Technische Universität München Freising Germany. Division of Molecular Biology Biomedical Center Faculty of Medicine Ludwig Maximilian University Munich Germany. Department of Mathematics Technische Universität München Munich Germany. Institute of Diabetes and Regeneration Research Helmholtz Diabetes Center Helmholtz Zentrum München Munich Germany. heiko.lickert@helmholtz-muenchen.de. Institute of Stem Cell Research Helmholtz Zentrum München Munich Germany. heiko.lickert@helmholtz-muenchen.de. German Center for Diabetes Research (DZD) Munich Germany. heiko.lickert@helmholtz-muenchen.de. School of Medicine Klinikum Rechts der Isar Technische Universität München Munich Germany. heiko.lickert@helmholtz-muenchen.de.

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Combining endogenous and exogenous variables in a special case of non-parametric time series forecasting model

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Moscow University computational mathematics and Cybernetics 2016年第2期40卷 71-78页

作者： Motrenko, A.P. Rudakov, K.V. Strijov, V.V. Department of Control and Applied Mathematics Moscow Institute of Physics and Technology (State University) Institutskii per. 9 Dolgoprudnyi Moscow oblast 141700 Russian Federation Department of Computational Mathematics and Cybernetics Moscow State University Moscow 119899 Russian Federation Dorodnicyn Computing Center Russian Academy of Sciences ul. Vavilova 40 GSP-1 Moscow 119333 Russian Federation

We address a problem of increasing quality of forecasting time series by taking into account the information about exogenous time series. We aim to improve a non-parametric forecasting algorithm that minimizes the convolution of a histogram of time series with the loss function. We propose to adjust the histogram, using mixtures of conditional histograms as a less sparse alternative to multidimensional histogram and in some cases demonstrate the decrease of loss compared to the basic forecasting algorithm. To the extent of our knowledge, such approach to combining endogenous and exogenous time series is original and has not been proposed yet. The suggested method is illustrated with the data from the Russian Railways. © 2016, Allerton Press, Inc.

关键词： exogenous time series forecasting hist algorithm mixture model time series

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Complex band structure and electronic transmission

arXiv

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arXiv 2017年

作者： Jensen, Anders Strange, Mikkel Smidstrup, Søren Stokbro, Kurt Solomon, Gemma C. Reuter, Matthew G. Nano-Science Center Department of Chemistry University of Copenhagen Copenhagen Ø2100 Denmark Department of Physics Technical University of Denmark Kongens Lyngby2800 Denmark QuantumWise A/S Fruebjergvej 3 Box 4 Copenhagen2100 Denmark Department of Applied Mathematics & Statistics Institute for Advanced Computational Science Stony Brook University Stony BrookNY11794 United States

The function of nano-scale devices critically depends on the choice of materials. For electron transport junctions it is natural to characterize the materials by their conductance length dependence, β. Theoretical estimations of β are made employing two primary theories: complex band structure and DFT-NEGF Landauer transport. Both reveal information on β of individual states;i.e. complex Bloch waves and transmission eigenchannels, respectively. However, it is unclear how the β-values of the two approaches compare. Here, we present calculations of decay constants for the two most conductive states as determined by complex band structure and standard DFT-NEGF transport calculations for two molecular and one semi-conductor junctions. Despite the different nature of the two methods, we find strong agreement of the calculated decay constants for the molecular junctions while the semi-conductor junction shows some discrepancies. The results presented here provide a template for studying the intrinsic, channel resolved length dependence of the junction through complex band structure of the central material in the heterogeneous nano-scale junction. Copyright © 2017, The Authors. All rights reserved.

关键词： Electron transport properties

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On the effect of non-Gaussian lensing deflections on CMB lensing measurements

arXiv

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arXiv 2018年

作者： Böhm, Vanessa Sherwin, Blake D. Liu, Jia Hill, J. Colin Schmittfull, Marcel Namikawa, Toshiya Berkeley Center for Cosmological Physics University of California BerkeleyCA94720 United States Lawrence Berkeley National Laboratory 1 Cyclotron Road BerkeleyCA93720 United States Department of Applied Mathematics and Theoretical Physics University of Cambridge Wilberforce Road CambridgeCB3 0WA United Kingdom Department of Astrophysical Sciences Princeton University PrincetonNJ08544 United States Center for Computational Astrophysics Flatiron Institute 162 5th Avenue 10010 New YorkNY United States Institute for Advanced Study Einstein Drive PrincetonNJ08540 United States Leung Center for Cosmology and Particle Astrophysics National Taiwan University Taipei10617 Taiwan

We investigate the impact of non-Gaussian lensing deflections on measurements of the CMB lensing power spectrum. We find that the false assumption of their Gaussianity significantly biases these measurements in current and future experiments at the percent level. The bias is detected by comparing CMB lensing reconstructions from simulated CMB data lensed with Gaussian deflection fields to reconstructions from simulations lensed with fully non-Gaussian deflection fields. The non-Gaussian deflections are produced by ray-tracing through snapshots of an N-body simulation and capture both the non-Gaussianity induced by non-linear structure formation and by multiple correlated deflections. We find that the amplitude of the measured bias is in agreement with analytical predictions by Böhm et al. 2016. The bias is largest in temperature-based measurements and we do not find evidence for it in measurements from a combination of polarization fields (EB,EB). We argue that the non-Gaussian bias should be even more important for measurements of cross-correlations of CMB lensing with low-redshift tracers of large-scale structure. Copyright © 2018, The Authors. All rights reserved.

关键词： Deflection (structures)

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Constraints on black-hole charges with the 2017 EHT observations of M87

arXiv

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arXiv 2021年

作者： Kocherlakota, Prashant Rezzolla, Luciano Falcke, Heino Fromm, Christian M. Kramer, Michael Mizuno, Yosuke Nathanail, Antonios Olivares, Héctor Younsi, Ziri Akiyama, Kazunori Alberdi, Antxon Alef, Walter Carlos Algaba, Juan Anantua, Richard Asada, Keiichi Azulay, Rebecca Baczko, Anne-Kathrin Ball, David Baloković, Mislav Barrett, John Benson, Bradford A. Bintley, Dan Blackburn, Lindy Blundell, Raymond Boland, Wilfred Bouman, Katherine L. Bower, Geoffrey C. Boyce, Hope Bremer, Michael Brinkerink, Christiaan D. Brissenden, Roger Britzen, Silke Broderick, Avery E. Broguiere, Dominique Bronzwaer, Thomas Byun, Do-Young Carlstrom, John E. Chael, Andrew Chan, Chi-Kwan Chatterjee, Shami Chatterjee, Koushik Chen, Ming-Tang Chen, Yongjun Chesler, Paul M. Cho, Ilje Christian, Pierre Conway, John E. Cordes, James M. Crawford, Thomas M. Crew, Geoffrey B. Cruz-Osorio, Alejandro Cui, Yuzhu Davelaar, Jordy de Laurentis, Mariafelicia Deane, Roger Dempsey, Jessica Desvignes, Gregory Doeleman, Sheperd S. Eatough, Ralph P. Farah, Joseph Fish, Vincent L. Fomalont, Ed Fraga-Encinas, Raquel Friberg, Per Alyson Ford, H. Fuentes, Antonio Galison, Peter Gammie, Charles F. García, Roberto Gentaz, Olivier Georgiev, Boris Goddi, Ciriaco Gold, Roman Gómez, José L. Gómez-Ruiz, Arturo I. Gu, Minfeng Gurwell, Mark Hada, Kazuhiro Haggard, Daryl Hecht, Michael H. Hesper, Ronald Ho, Luis C. Ho, Paul Honma, Mareki Huang, Chih-Wei L. Huang, Lei Hughes, David H. Ikeda, Shiro Inoue, Makoto Issaoun, Sara James, David J. Jannuzi, Buell T. Janssen, Michael Jeter, Britton Jiang, Wu Jimenez-Rosales, Alejandra Johnson, Michael D. Jorstad, Svetlana Jung, Taehyun Karami, Mansour Karuppusamy, Ramesh Kawashima, Tomohisa Keating, Garrett K. Kettenis, Mark Kim, Dong-Jin Kim, Jae-Young Kim, Jongsoo Kim, Junhan Kino, Motoki Yi Koay, Jun Kofuji, Yutaro Koch, Patrick M. Koyama, Shoko Kramer, Carsten Krichbaum, Thomas P. Kuo, Cheng-Yu Lauer, Tod R. Lee, Sang-Sung Levis, Aviad Li, Yan-Rong Li, Zhiyuan Lindqvist, Michael Lico, Rocco Lindahl, Greg Liu, Jun Liu, Kuo Liuzzo, Institut für Theoretische Physik Goethe-Universität Max-von-Laue-Str. 1 Frankfurt60438 Germany Frankfurt Institute for Advanced Studies Ruth-Moufang-Str. 1 Frankfurt60438 Germany School of Mathematics Trinity College Dublin 2 Ireland Radboud University P.O. Box 9010 Nijmegen6500 GL Netherlands Black Hole Initiative at Harvard University 20 Garden Street CambridgeMA02138 United States Center for Astrophysics — Harvard & Smithsonian 60 Garden Street CambridgeMA02138 United States Max-Planck-Institut für Radioastronomie Auf dem Hügel 69 BonnD-53121 Germany Tsung-Dao Lee Institute School of Physics and Astronomy Shanghai Jiao Tong University Shanghai200240 China Institut für Theoretische Physik Goethe-Universität Frankfurt Max-von-Laue-Straße 1 Frankfurt am MainD-60438 Germany Department of Physics National and Kapodistrian University of Athens Panepistimiopolis ZografosGR 15783 Greece Mullard Space Science Laboratory University College London Holmbury St. Mary Dorking SurreyRH5 6NT United Kingdom Massachusetts Institute of Technology Haystack Observatory 99 Millstone Road WestfordMA01886 United States National Astronomical Observatory of Japan 2-21-1 Osawa Mitaka Tokyo181-8588 Japan Instituto de Astrofísica de Andalucía-CSIC Glorieta de la Astronomía s/n GranadaE-18008 Spain Department of Physics Faculty of Science University of Malaya Kuala Lumpur50603 Malaysia Center for Computational Astrophysics Flatiron Institute 162 Fifth Avenue New YorkNY10010 United States Institute of Astronomy and Astrophysics Academia Sinica 11F of Astronomy-Mathematics Building AS/NTU No. 1 Sec. 4 Roosevelt Rd Taipei10617 Taiwan Departament d’Astronomia i Astrofísica Universitat de València C. Dr. Moliner 50 Burjassot ValènciaE-46100 Spain Observatori Astronòmic Universitat de València C. Catedrático José Beltrán 2 PaternaValènciaE-46980 Spain Steward Observatory and Department of Astronomy University of Arizona 933 N. Cherry Ave. Tucson

Our understanding of strong gravity near supermassive compact objects has recently improved thanks to the measurements made by the Event Horizon Telescope (EHT). We use here the M87* shadow size to infer constraints on the physical charges of a large variety of nonrotating or rotating black holes. For example, we show that the quality of the measurements is already sufficient to rule out that M87* is a highly charged dilaton black hole. Similarly, when considering black holes with two physical and independent charges, we are able to exclude considerable regions of the space of parameters for the doubly-charged dilaton and the Sen black holes. Copyright © 2021, The Authors. All rights reserved.

关键词： Gravitation

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WannierTools: An open-source software package for novel topological materials

arXiv

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arXiv 2017年

作者： Wu, QuanSheng Zhang, ShengNan Song, Hai-Feng Troyer, Matthias Soluyanov, Alexey A. Theoretische Physik and Station Q Zurich ETH Zurich Zurich8093 Switzerland Institute of Physics Chinese Academy of Sciences Beijing100190 China Institute of Applied Physics and Computational Mathematics Beijing100094 China Department of Physics St. Petersburg State University St. Petersburg199034 Russia

We present an open-source software package WannierTools, a tool for investigation of novel topological materials. This code works in the tight-binding framework, which can be generated by another software package Wannier90 [1]. It can help to classify the topological phase of a given materials by calculating the Wilson loop, and can get the surface state spectrum which is detected by angle resolved photoemission (ARPES) and in scanning tunneling microscopy (STM) experiments. It also identifies positions of Weyl/Dirac points and nodal line structures, calculates the Berry phase around a closed momentum loop and Berry curvature in a part of the Brillouin zone(BZ). Copyright © 2017, The Authors. All rights reserved.

关键词： Scanning tunneling microscopy

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Topological crystalline antiferromagnetic state in tetragonal FeS

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Physical Review B 2017年第16期96卷 165102-165102页

作者： Ningning Hao Fawei Zheng Ping Zhang Shun-Qing Shen Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions High Magnetic Field Laboratory Chinese Academy of Sciences Hefei 230031 Anhui China Collaborative Innovation Center of Advanced Microstructures Nanjing University Jiangsu Province 210093 China Institute of Applied Physics and Computational Mathematics Beijing 100088 China Beijing Computational Science Research Center Beijing 100193 China Department of Physics The University of Hong Kong Pokfulam Road Hong Kong China

Integration between magnetism and topology is an exotic phenomenon in condensed-matter physics. Here, we propose an exotic phase named topological crystalline antiferromagnetic state, in which antiferromagnetism intrinsically integrates with nontrivial topology, and we suggest such a state can be realized in tetragonal FeS. A combination of first-principles calculations and symmetry analyses shows that the topological crystalline antiferromagnetic state arises from band reconstruction induced by pair checkerboard antiferromagnetic order together with band-gap opening induced by intrinsic spin-orbit coupling in tetragonal FeS. The topological crystalline antiferromagnetic state is protected by the product of fractional translation symmetry, mirror symmetry, and time-reversal symmetry, and presents some unique features. In contrast to strong topological insulators, the topological robustness is surface dependent. These findings indicate that nontrivial topological states could emerge in pure antiferromagnetic materials, which sheds new light on potential applications of topological properties in fast-developing antiferromagnetic spintronics.

关键词： Antiferromagnetism Superconductivity Topological materials Chalcogenides First-principles calculations

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