{"id":1069,"date":"2018-09-03T17:05:48","date_gmt":"2018-09-03T08:05:48","guid":{"rendered":"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/seminar\/1069\/"},"modified":"2018-12-19T21:43:25","modified_gmt":"2018-12-19T12:43:25","slug":"lifetime_of_a_vacuum","status":"publish","type":"seminar","link":"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/seminar\/1069\/","title":{"rendered":"Lifetime of a vacuum"},"content":{"rendered":"

The fate of the Universe has been an attracting topic in particle physics and cosmology. A possible scenario of such is that our Universe is in a meta-stable vacuum (false vacuum) and it decays into another vacuum (true vacuum). The phase transition between the two vacua begins with a small region falling into the true vacuum. Then, such a bubble of the true vacuum expands with almost the speed of light, destroying the structure of the Universe. Finally, the Universe is completely covered by the bubble(s) and ends. In the standard model of particle physics, our vacuum is likely to be a false vacuum and the rate of having such a bubble is an interesting physical quantity. We have performed a precise calculation of the rate and obtained a lifetime that is much longer than the age of the Universe.<\/p>\n","protected":false},"featured_media":0,"template":"","tags":[],"seminar_category":[58],"acf":{"s_now_accepting":true,"s_date_order":"2018-09-12 17:30:00","s_date_end":null,"s_date_text":"","s_text":"Yutaro Shoji","s_place":"KMI Science Symposia (ES635)","s_place_other":"","s_categoryother":"","s_poster":"","s_poster2":"","s_slide":""},"yoast_head":"\nLifetime of a vacuum - 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\/1069\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Lifetime of a vacuum - KMI - Nagoya University\" \/>\n<meta property=\"og:description\" content=\"The fate of the Universe has been an attracting topic in particle physics and cosmology. A possible scenario of such is that our Universe is in a meta-stable vacuum (false vacuum) and it decays into another vacuum (true vacuum). The phase transition between the two vacua begins with a small region falling into the true vacuum. Then, such a bubble of the true vacuum expands with almost the speed of light, destroying the structure of the Universe. Finally, the Universe …\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/seminar\/1069\/\" \/>\n<meta property=\"og:site_name\" content=\"KMI - Nagoya University\" \/>\n<meta property=\"article:modified_time\" content=\"2018-12-19T12:43:25+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/seminar\/1069\/\",\"url\":\"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/seminar\/1069\/\",\"name\":\"Lifetime of a vacuum - KMI - Nagoya University\",\"isPartOf\":{\"@id\":\"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/#website\"},\"datePublished\":\"2018-09-03T08:05:48+00:00\",\"dateModified\":\"2018-12-19T12:43:25+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/seminar\/1069\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/seminar\/1069\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/seminar\/1069\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Seminars\",\"item\":\"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/seminar\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Lifetime of a vacuum\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/#website\",\"url\":\"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/\",\"name\":\"KMI - Nagoya University\",\"description\":\"Nagoya University: Kobayashi-Maskawa Institute for the Origin of Particles and the Universe (KMI)\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Lifetime of a vacuum - KMI - Nagoya University","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/seminar\/1069\/","og_locale":"en_US","og_type":"article","og_title":"Lifetime of a vacuum - KMI - Nagoya University","og_description":"The fate of the Universe has been an attracting topic in particle physics and cosmology. A possible scenario of such is that our Universe is in a meta-stable vacuum (false vacuum) and it decays into another vacuum (true vacuum). The phase transition between the two vacua begins with a small region falling into the true vacuum. Then, such a bubble of the true vacuum expands with almost the speed of light, destroying the structure of the Universe. 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