{"id":9194,"date":"2023-09-26T11:05:16","date_gmt":"2023-09-26T09:05:16","guid":{"rendered":"https:\/\/fermi.univ-tlse3.fr\/?post_type=tribe_events&#038;p=9194"},"modified":"2023-09-28T09:00:13","modified_gmt":"2023-09-28T07:00:13","slug":"greens-function-methods-for-charged-and-neutral-excitations-enzo-monino-lcpq-theses-5-10-2023-9h","status":"publish","type":"tribe_events","link":"https:\/\/fermi.univ-tlse3.fr\/fr\/home\/event\/greens-function-methods-for-charged-and-neutral-excitations-enzo-monino-lcpq-theses-5-10-2023-9h\/","title":{"rendered":"Green\u2019s function methods for charged and neutral excitations. &#8211; (Enzo Monino \/ LCPQ \/ Th\u00e8ses). &#8211; 5\/10\/2023, 9H"},"content":{"rendered":"<p><span style=\"font-size: 20px;\"><strong><span style=\"color: #2f4f4f;\">Soutenance de th\u00e8se<\/span><\/strong><\/span><\/p>\n<p><strong><span style=\"font-size: 20px; color: #191970;\">Enzo Monino, <\/span><\/strong>LCPQ, Salle de Conf\u00e9rence FERMI 3R4<\/p>\n<p><strong>R\u00e9sum\u00e9 :<\/strong><br \/>\nLes processus d&rsquo;excitations charg\u00e9es et \u00e9lectroniques sont au c\u0153ur de la chimie, de la physique et de la biologie, jouant un r\u00f4le cl\u00e9 dans des processus omnipr\u00e9sents tels que la photochimie, la catalyse et la technologie des cellules solaires. Cependant, d\u00e9finir une m\u00e9thode efficace qui fournit de mani\u00e8re fiable des \u00e9nergies d&rsquo;\u00e9tats excit\u00e9s et d&rsquo;ionisations pr\u00e9cises reste un d\u00e9fi majeur en chimie th\u00e9orique. Initialement d\u00e9velopp\u00e9es dans le cadre de la physique nucl\u00e9aire puis utilis\u00e9es dans la communaut\u00e9 de la mati\u00e8re condens\u00e9e, l&rsquo;utilisation des m\u00e9thodes de fonctions de Green en chimie quantique s&rsquo;est consid\u00e9rablement d\u00e9velopp\u00e9e ces derni\u00e8res ann\u00e9es. En effet, les m\u00e9thodes de fonction de Green ont suscit\u00e9 un int\u00e9r\u00eat consid\u00e9rable en raison de leur capacit\u00e9 \u00e0 cibler \u00e0 la fois les excitations charg\u00e9es et neutres. Le pilier des m\u00e9thodes de fonction de Green est la fonction de Green \u00e0 un corps. Elle a la capacit\u00e9 de fournir les excitations charg\u00e9es, c&rsquo;est-\u00e0-dire l&rsquo;ajout ou le retrait d&rsquo;un \u00e9lectron dans la mol\u00e9cule, en un seul calcul tel que mesur\u00e9es en spectroscopie de photo\u00e9mission directe ou inverse. Cela \u00e9vite d&rsquo;utiliser les m\u00e9thodes traditionnelles de chimie quantique o\u00f9 l&rsquo;on doit effectuer des calculs s\u00e9par\u00e9s sur les esp\u00e8ces neutres et ionis\u00e9es. D&rsquo;une part, le calcul des excitations charg\u00e9es doit r\u00e9soudre l&rsquo;\u00e9quation de Dyson qui relie la fonction de Green \u00e0 un corps \u00e0 la \u00ab\u00a0self-energy\u00a0\u00bb. D&rsquo;autre part, le calcul des excitations neutres, c&rsquo;est-\u00e0-dire la promotion d&rsquo;un \u00e9lectron \u00e0 un \u00e9tat excit\u00e9 de la mol\u00e9cule, n\u00e9cessite l&rsquo;utilisation de la fonction de Green \u00e0 deux corps \u00e0 travers sa connexion avec le noyau par l&rsquo;\u00e9quation de Bethe-Salpeter. Malheureusement, la self-energy exacte et le noyau exact ne sont pas connus et des approximations doivent \u00eatre faites. Dans cette th\u00e8se, nous explorons les performances de diff\u00e9rentes approximations pour la self-energy et le noyau en comparant avec diverses m\u00e9thodes de chimie quantique bien connues en appliquant ces approximations sur divers syst\u00e8mes atomiques et mol\u00e9culaires. De plus, nous identifions les discontinuit\u00e9s non-physiques que nous rencontrons dans diverses quantit\u00e9s physiques lors de l&rsquo;utilisation d&rsquo;approximations pour la self-energy et proposons un moyen d&rsquo;\u00e9viter de tels probl\u00e8mes. Ensuite, nous \u00e9tudions les liens entre diverses approximations de la fonction de Green. Enfin, diff\u00e9rentes m\u00e9thodes vues dans cette th\u00e8se sont rassembl\u00e9es pour former un logiciel de chimie quantique open source avec un fort accent mis sur l&rsquo;aide aux \u00e9tudiants et aux nouveaux arrivants dans le domaine pour d\u00e9velopper leurs propres id\u00e9es.<\/p>\n<hr \/>\n<p class=\"western\"><code class=\"western\"><div class=\"leaflet-map WPLeafletMap\" style=\"height:300px; width:70%;\"><\/div><script>\nwindow.WPLeafletMapPlugin = window.WPLeafletMapPlugin || [];\nwindow.WPLeafletMapPlugin.push(function WPLeafletMapShortcode() {\/*<script>*\/\nvar baseUrl = atob('aHR0cHM6Ly97c30udGlsZS5vcGVuc3RyZWV0bWFwLm9yZy97en0ve3h9L3t5fS5wbmc=');\nvar base = (!baseUrl && window.MQ) ?\n    window.MQ.mapLayer() : L.tileLayer(baseUrl,\n        L.Util.extend({}, {\n            detectRetina: 0,\n        },\n        {\"subdomains\":\"abc\",\"noWrap\":false,\"maxZoom\":18}        )\n    );\n    var options = L.Util.extend({}, {\n        layers: [base],\n        attributionControl: false\n    },\n    {\"zoomControl\":true,\"scrollWheelZoom\":true,\"doubleClickZoom\":true,\"fitBounds\":true,\"minZoom\":9,\"maxZoom\":18,\"maxBounds\":null,\"attribution\":\"<a href=\\\"http:\\\/\\\/leafletjs.com\\\" title=\\\"Une biblioth\\u00e8que JS pour des cartes interactives\\\">Leaflet<\\\/a>; 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(- B\u00e2timent 3R4)'));window.WPLeafletMapPlugin.markers.push( marker );\n        });<\/script><\/code><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Soutenance de th\u00e8se Enzo Monino, LCPQ, Salle de Conf\u00e9rence FERMI 3R4 R\u00e9sum\u00e9 : Les processus d&rsquo;excitations charg\u00e9es et \u00e9lectroniques sont au c\u0153ur de la chimie, de la physique et de&hellip;&nbsp;<a href=\"https:\/\/fermi.univ-tlse3.fr\/fr\/home\/event\/greens-function-methods-for-charged-and-neutral-excitations-enzo-monino-lcpq-theses-5-10-2023-9h\/\" rel=\"bookmark\">Lire la suite &raquo;<span class=\"screen-reader-text\">Green\u2019s function methods for charged and neutral excitations. &#8211; (Enzo Monino \/ LCPQ \/ Th\u00e8ses). &#8211; 5\/10\/2023, 9H<\/span><\/a><\/p>\n","protected":false},"author":5,"featured_media":0,"template":"","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","_tribe_events_status":"","_tribe_events_status_reason":"","footnotes":""},"tags":[],"tribe_events_cat":[48,308,310],"class_list":["post-9194","tribe_events","type-tribe_events","status-publish","hentry","tribe_events_cat-events","tribe_events_cat-hdr-thesis","tribe_events_cat-lcpq","cat_events","cat_hdr-thesis","cat_lcpq"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Green\u2019s function methods for charged and neutral excitations. - (Enzo Monino \/ LCPQ \/ Th\u00e8ses). - 5\/10\/2023, 9H - FeRMI<\/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:\/\/fermi.univ-tlse3.fr\/fr\/home\/event\/greens-function-methods-for-charged-and-neutral-excitations-enzo-monino-lcpq-theses-5-10-2023-9h\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Green\u2019s function methods for charged and neutral excitations. - (Enzo Monino \/ LCPQ \/ Th\u00e8ses). - 5\/10\/2023, 9H - FeRMI\" \/>\n<meta property=\"og:description\" content=\"Soutenance de th\u00e8se Enzo Monino, LCPQ, Salle de Conf\u00e9rence FERMI 3R4 R\u00e9sum\u00e9 : Les processus d&rsquo;excitations charg\u00e9es et \u00e9lectroniques sont au c\u0153ur de la chimie, de la physique et de&hellip;&nbsp;Lire la suite &raquo;Green\u2019s function methods for charged and neutral excitations. &#8211; 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