{"id":3171,"date":"2024-06-11T08:40:46","date_gmt":"2024-06-10T23:40:46","guid":{"rendered":"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/?post_type=seminar&#038;p=3171"},"modified":"2024-06-25T14:01:33","modified_gmt":"2024-06-25T05:01:33","slug":"going-beyond-the-standard-lcdm-model-by-cosmography-2","status":"publish","type":"seminar","link":"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/seminar\/3171\/","title":{"rendered":"Order of the chiral phase transition for N_f flavors in the chiral limit"},"content":{"rendered":"<p><strong><span style=\"color: #333399\">&#8220;KMI Visitor Seminar&#8221; 26th July (Fri)\u00a0 15\uff1a00 &#8211;<\/span><\/strong><\/p>\n<ul>\n<li>Date: July 26th (Fri) 15:00 &#8211; 16:00<\/li>\n<li>Place: ES635<\/li>\n<li>Speaker: Gergely Fejos (Eotvos Lorand University)<\/li>\n<li>Title: Order of the chiral phase transition for N_f flavors in the chiral limit<\/li>\n<\/ul>\n<h2>Abstract<\/h2>\n<p>Based on the epsilon expansion of the renormalization group flows of the Ginzburg-Landau potential for the chiral phase transition of QCD, it has been widely accepted that it is of first order in the chiral limit for N_f &gt; 2, with the possibility of a second order transition for N_f = 2, given the axial anomaly remains strong enough at the critical point. Recently, several lattice QCD studies hint that the transition can be of second order in the whole range of flavor numbers, after all. In this talk, I reanalyze the renormalization group flows of the Ginzburg-Landau potential using the functional renormalization group technique. Instead of employing the epsilon expansion around d = 4, with the inclusion of all (perturbatively) relevant and marginal interactions directly in d = 3, the method predicts that there exist new fixed points in the whole flavor number range, potentially belonging to conformal systems going through a finite-temperature chiral transition. The results indicate that the chiral transition can be of second order for N_f &gt;= 5, while its nature depends on the strength of the U_A(1) anomaly for N_f = 2,3,4.<\/p>\n","protected":false},"featured_media":0,"template":"","tags":[],"seminar_category":[53],"acf":{"s_now_accepting":true,"s_date_order":"2024-07-26 14:00:00","s_date_end":null,"s_date_text":"15:00 - 16:00","s_text":"Gergely Fejos (Eotvos Lorand University)","s_place":"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>Order of the chiral phase transition for N_f flavors in the chiral limit - 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\/3171\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Order of the chiral phase transition for N_f flavors in the chiral limit - KMI - Nagoya University\" \/>\n<meta property=\"og:description\" content=\"&#8220;KMI Visitor Seminar&#8221; 26th July (Fri)\u00a0 15\uff1a00 &#8211; Date: July 26th (Fri) 15:00 &#8211; 16:00 Place: ES635 Speaker: Gergely Fejos (Eotvos Lorand University) Title: Order of the chiral phase transition for N_f flavors in the chiral limit Abstract Based on the epsilon expansion of the renormalization group flows of the Ginzburg-Landau potential for the chiral phase transition of QCD, it has been widely accepted that it is of first order in the chiral limit for N_f &gt; 2, with the &hellip;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/seminar\/3171\/\" \/>\n<meta property=\"og:site_name\" content=\"KMI - Nagoya University\" \/>\n<meta property=\"article:modified_time\" content=\"2024-06-25T05:01:33+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\/3171\/\",\"url\":\"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/seminar\/3171\/\",\"name\":\"Order of the chiral phase transition for N_f flavors in the chiral limit - KMI - Nagoya University\",\"isPartOf\":{\"@id\":\"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/#website\"},\"datePublished\":\"2024-06-10T23:40:46+00:00\",\"dateModified\":\"2024-06-25T05:01:33+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/seminar\/3171\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/seminar\/3171\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/seminar\/3171\/#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\":\"Order of the chiral phase transition for N_f flavors in the chiral limit\"}]},{\"@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":"Order of the chiral phase transition for N_f flavors in the chiral limit - 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\/3171\/","og_locale":"en_US","og_type":"article","og_title":"Order of the chiral phase transition for N_f flavors in the chiral limit - KMI - Nagoya University","og_description":"&#8220;KMI Visitor Seminar&#8221; 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