{"id":1183,"date":"2018-12-17T13:40:10","date_gmt":"2018-12-17T04:40:10","guid":{"rendered":"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/?post_type=seminar&#038;p=1183"},"modified":"2021-07-30T12:36:19","modified_gmt":"2021-07-30T03:36:19","slug":"dark-matter-in-horndeski-theory","status":"publish","type":"seminar","link":"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/seminar\/1183\/","title":{"rendered":"Dark matter in Horndeski theory"},"content":{"rendered":"<div class=\"content\">\n<div class=\"mainText\">\n<div class=\"entry\">\n<div class=\"title\"><span style=\"font-size: 14pt;\"><strong><span class=\"paren\" id=\"left\">&#8220;<\/span>Dark matter in Horndeski theory<span class=\"paren\" id=\"right\">&#8220;<\/span><\/strong><\/span><\/div>\n<div class=\"person\">\n<div class=\"speaker\">Shi Jiaming (Central China Normal University<span class=\"paren\" id=\"right\">)<\/span><\/div>\n<\/div>\n<div class=\"date\">January 17, 2019 (Thu) 17:00-<\/div>\n<div class=\"place\">KMI Science Symposia (ES635)<\/div>\n<div><\/div>\n<div class=\"abstract\"><strong>Abstract<span class=\"delimiter\">:<\/span><\/strong><\/p>\n<div class=\"page\" title=\"Page 1\">\n<div class=\"layoutArea\">\n<div class=\"column\">\n<p><span>Horndeski theory is the most general scalar-tensor theory which leads to the second-order equations of motion. In this talk, a subclass of the Horndeski theory with shift symmetry is applied to study the galaxy rotation curve and the cosmo- logical evolution with identifying the scalar field with the dark matter, while the cosmological constant explains the dark energy. I show an analytic solution which reproduces the inverse-square-law density distribution of dark matter halo, so that the observed rotation curve can be explained at the galactic scale. I also discuss the dark-matter-like behavior of the scalar field at the cosmological scale and consider the consistent parameter region between the galactic and cosmological scales.<\/span><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"attach\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<div id=\"NAVIGATION\">\n<ul class=\"mainMenu\">\n<li class=\"first\"><\/li>\n<\/ul>\n<\/div>\n","protected":false},"featured_media":0,"template":"","tags":[],"seminar_category":[],"acf":{"s_now_accepting":true,"s_date_order":"2019-01-17 17:00:00","s_date_end":null,"s_date_text":"2019-01-17 5PM","s_text":"Shi Jiaming (Central China Normal University)","s_place":"KMI Science Symposia (ES635)","s_place_other":"","s_categoryother":"","s_poster":"","s_poster2":"","s_slide":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Dark matter in Horndeski theory - KMI - Nagoya University<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/seminar\/1183\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Dark matter in Horndeski theory - KMI - Nagoya University\" \/>\n<meta property=\"og:description\" content=\"&#8220;Dark matter in Horndeski theory&#8220; Shi Jiaming (Central China Normal University) January 17, 2019 (Thu) 17:00- KMI Science Symposia (ES635) Abstract: Horndeski theory is the most general scalar-tensor theory which leads to the second-order equations of motion. 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