{"id":807,"date":"2022-03-20T11:51:35","date_gmt":"2022-03-20T11:51:35","guid":{"rendered":"https:\/\/members.ift.uam-csic.es\/david.cerdeno\/?page_id=807"},"modified":"2025-04-08T09:04:47","modified_gmt":"2025-04-08T09:04:47","slug":"astroparticle-physics","status":"publish","type":"page","link":"https:\/\/members.ift.uam-csic.es\/david.cerdeno\/astroparticle-physics\/","title":{"rendered":"Astroparticle Physics"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"807\" class=\"elementor elementor-807\">\n\t\t\t\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-33026e2 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"33026e2\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-5f0a1458\" data-id=\"5f0a1458\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-5bd6ce66 elementor-widget elementor-widget-text-editor\" data-id=\"5bd6ce66\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.16.0 - 17-10-2023 *\/\n.elementor-widget-text-editor.elementor-drop-cap-view-stacked .elementor-drop-cap{background-color:#69727d;color:#fff}.elementor-widget-text-editor.elementor-drop-cap-view-framed .elementor-drop-cap{color:#69727d;border:3px solid;background-color:transparent}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap{margin-top:8px}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap-letter{width:1em;height:1em}.elementor-widget-text-editor .elementor-drop-cap{float:left;text-align:center;line-height:1;font-size:50px}.elementor-widget-text-editor .elementor-drop-cap-letter{display:inline-block}<\/style>\t\t\t\t<p>This course has been taught in the postgraduate programmes at Madrid Aut\u00f3noma University, Durham University, the University of Valencia (2018), and The Max Planck Institute M\u00fcnchen (2009). It has also been taught (in different formats) in a number of postgraduate schools: Taller de Altas Energ\u00edas (TAE 2014, 2015, 2017, 2018, 2019,\u00a0<a href=\"http:\/\/benasque.org\/2021tae\/\" target=\"_blank\" rel=\"noopener\">2021<\/a>), 1st International School on Particle Physics and Cosmology (<a href=\"http:\/\/www.uimp.es\/agenda-link.html?id_actividad=64B0&amp;anyaca=2019-20\" target=\"_blank\" rel=\"noopener\">UIMP 2019<\/a>), Higgs Centre School of Theoretical Physics (<a href=\"https:\/\/higgs.ph.ed.ac.uk\/workshops\/higgs-centre-school-of-theoretical-physics-2016\/\" target=\"_blank\" rel=\"noopener\">2016<\/a>), STFC HEP School (2015, 2016, 2017).<\/p><p>Some notes for the course (<a href=\"https:\/\/members.ift.uam-csic.es\/david.cerdeno\/wp-content\/uploads\/2022\/03\/DM.pdf\" target=\"_blank\" rel=\"noopener\">pdf<\/a>).<br \/>Exercises (<a href=\"https:\/\/members.ift.uam-csic.es\/david.cerdeno\/wp-content\/uploads\/2025\/04\/Exercises_full.pdf\">pdf<\/a>).<br \/>Extra exercise (<a href=\"https:\/\/members.ift.uam-csic.es\/david.cerdeno\/wp-content\/uploads\/2025\/04\/Exercises2.pdf\">pdf<\/a>).<\/p><p><!-- \/wp:paragraph --><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-00603f6 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"00603f6\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-bae8626\" data-id=\"bae8626\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-18a186b elementor-widget elementor-widget-text-editor\" data-id=\"18a186b\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<h5>1.- Introduction<\/h5>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c75150f elementor-widget elementor-widget-text-editor\" data-id=\"c75150f\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>In this session, we present the observational evidence that points towards the existence of dark matter. We introduce the concept of dark matter halo and think about its properties (<a href=\"https:\/\/members.ift.uam-csic.es\/david.cerdeno\/wp-content\/uploads\/2022\/03\/Astroparticles-2022-1.pdf\" target=\"_blank\" rel=\"noopener\">slides<\/a>).<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-a8b74e9 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"a8b74e9\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-377686b\" data-id=\"377686b\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-59fd147 elementor-widget elementor-widget-text-editor\" data-id=\"59fd147\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<h5>2.- Cosmology 101<\/h5>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-abb5bc2 elementor-widget elementor-widget-text-editor\" data-id=\"abb5bc2\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>A brief reminder of Early Universe Cosmology. Emphasis is put on how to compute the abundance of a given species in equilibrium. The Boltzmann equation that describes the evolution of the number density is derived (<a href=\"https:\/\/members.ift.uam-csic.es\/david.cerdeno\/wp-content\/uploads\/2022\/03\/Astroparticles-2022-2.pdf\" target=\"_blank\" rel=\"noopener\">slides<\/a>).<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-3d0a18a elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"3d0a18a\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-a492d55\" data-id=\"a492d55\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-3890cf0 elementor-widget elementor-widget-text-editor\" data-id=\"3890cf0\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<h5>3.- Dark Matter Production (Freeze-out)<\/h5>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9d687ab elementor-widget elementor-widget-text-editor\" data-id=\"9d687ab\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>We apply the Boltzmann equation to the case of a non-relativistic DM particle that &#8220;freezes-out&#8221;, and define WIMPs (<a href=\"https:\/\/members.ift.uam-csic.es\/david.cerdeno\/wp-content\/uploads\/2022\/03\/Astroparticles_2022-3.pdf\" target=\"_blank\" rel=\"noopener\">slides<\/a>).<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-5c53caf elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"5c53caf\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-0b4d549\" data-id=\"0b4d549\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-82a2f49 elementor-widget elementor-widget-text-editor\" data-id=\"82a2f49\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<h5>4.- Dark Matter Production (WIMP models and Freeze-in)<\/h5>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c88cfaf elementor-widget elementor-widget-text-editor\" data-id=\"c88cfaf\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>We study some specific particle realisations of WIMPs (concentrating on simplified models) and study special cases, such as resonant annihilation and co-annihilations. We then introduce a new paradigm, where dark matter with very small couplings &#8220;freezes-in&#8221; (<a href=\"https:\/\/members.ift.uam-csic.es\/david.cerdeno\/wp-content\/uploads\/2022\/03\/Astroparticles_2022-4.pdf\" target=\"_blank\" rel=\"noopener\">slides<\/a>).<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-61d8040 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"61d8040\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-026afbb\" data-id=\"026afbb\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-a063e11 elementor-widget elementor-widget-text-editor\" data-id=\"a063e11\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<h5><span style=\"font-size: 1.1875rem; color: var( --e-global-color-primary ); font-family: var( --e-global-typography-text-font-family ), Sans-serif;\">5- Axions<\/span><\/h5>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8556e49 elementor-widget elementor-widget-text-editor\" data-id=\"8556e49\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>We review the misalignment mechanism for the production of axions. The cosmological implications are reviewed. We then comment on axion detection.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-5e4fcc6 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"5e4fcc6\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-3877a63\" data-id=\"3877a63\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-ac7a8ee elementor-widget elementor-widget-text-editor\" data-id=\"ac7a8ee\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<h5><span style=\"font-size: 1.1875rem; color: var( --e-global-color-primary ); font-family: var( --e-global-typography-text-font-family ), Sans-serif;\">6- Direct Detection<\/span><\/h5>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6633ee1 elementor-widget elementor-widget-text-editor\" data-id=\"6633ee1\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>We show the basics of direct dark matter detection. We derive the equation for the observed detection rate and comment on uncertainties associated to nuclear physics and astrophysical parameters of the dark matter halo (<a href=\"https:\/\/members.ift.uam-csic.es\/david.cerdeno\/wp-content\/uploads\/2022\/04\/Astroparticles_2022-6.pdf\" target=\"_blank\">slides<\/a>).<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7b6d472 elementor-widget elementor-widget-text-editor\" data-id=\"7b6d472\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-3365eb8 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"3365eb8\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-265812d\" data-id=\"265812d\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-2f7ef5c elementor-widget elementor-widget-text-editor\" data-id=\"2f7ef5c\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<h5>EXERCISES<\/h5>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c2d75df elementor-widget elementor-widget-text-editor\" data-id=\"c2d75df\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>Exercises for the course (solutions available upon request) (<a href=\"https:\/\/members.ift.uam-csic.es\/david.cerdeno\/wp-content\/uploads\/2022\/04\/Exercises_full.pdf\" target=\"_blank\" rel=\"noopener\">pdf<\/a>).&nbsp;<\/p>\n<p>Extra exercise (pdf)<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>This course has been taught in the postgraduate programmes at Madrid Aut\u00f3noma University, Durham University, the University of Valencia (2018), and The Max Planck Institute M\u00fcnchen (2009). It has also been taught (in different formats) in a number of postgraduate schools: Taller de Altas Energ\u00edas (TAE 2014, 2015, 2017, 2018, 2019,\u00a02021), 1st International School on &hellip; <a href=\"https:\/\/members.ift.uam-csic.es\/david.cerdeno\/astroparticle-physics\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Astroparticle Physics&#8221;<\/span><\/a><\/p>\n","protected":false},"author":3,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-807","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/members.ift.uam-csic.es\/david.cerdeno\/wp-json\/wp\/v2\/pages\/807","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/members.ift.uam-csic.es\/david.cerdeno\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/members.ift.uam-csic.es\/david.cerdeno\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/members.ift.uam-csic.es\/david.cerdeno\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/members.ift.uam-csic.es\/david.cerdeno\/wp-json\/wp\/v2\/comments?post=807"}],"version-history":[{"count":51,"href":"https:\/\/members.ift.uam-csic.es\/david.cerdeno\/wp-json\/wp\/v2\/pages\/807\/revisions"}],"predecessor-version":[{"id":972,"href":"https:\/\/members.ift.uam-csic.es\/david.cerdeno\/wp-json\/wp\/v2\/pages\/807\/revisions\/972"}],"wp:attachment":[{"href":"https:\/\/members.ift.uam-csic.es\/david.cerdeno\/wp-json\/wp\/v2\/media?parent=807"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}