{"id":583,"date":"2016-06-10T13:28:47","date_gmt":"2016-06-10T11:28:47","guid":{"rendered":"http:\/\/blogs.futura-sciences.com\/barrau\/?p=583"},"modified":"2016-06-10T18:50:04","modified_gmt":"2016-06-10T16:50:04","slug":"anniversaire-carlo-rovelli","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/barrau\/2016\/06\/10\/anniversaire-carlo-rovelli\/","title":{"rendered":"Bon anniversaire, Carlo Rovelli !"},"content":{"rendered":"<p>Il y a quelques semaines, eut lieu \u00e0 Marseille une conf\u00e9rence internationale un peu particuli\u00e8re. Il \u00e9tait en effet question \u00e0 la fois de r\u00e9unir les sp\u00e9cialistes de gravitation quantique \u00e0 boucles pour discuter des derni\u00e8res avanc\u00e9es de la th\u00e9orie &#8211; comme il est d\u2019usage dans les congr\u00e8s &#8211; mais aussi de f\u00eater le soixanti\u00e8me anniversaire d\u2019une personnalit\u00e9 hors du commun : Carlo Rovelli.<\/p>\n<figure id=\"attachment_592\" aria-describedby=\"caption-attachment-592\" style=\"width: 749px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-592\" src=\"https:\/\/blogs.futura-sciences.com\/barrau\/wp-content\/uploads\/sites\/12\/2016\/06\/carlo_rovelli.jpg\" alt=\"Carlo Rovelli\" width=\"749\" height=\"1000\" srcset=\"https:\/\/blogs.futura-sciences.com\/barrau\/wp-content\/uploads\/sites\/12\/2016\/06\/carlo_rovelli.jpg 749w, https:\/\/blogs.futura-sciences.com\/barrau\/wp-content\/uploads\/sites\/12\/2016\/06\/carlo_rovelli-337x450.jpg 337w\" sizes=\"auto, (max-width: 749px) 100vw, 749px\" \/><figcaption id=\"caption-attachment-592\" class=\"wp-caption-text\">Carlo Rovelli<\/figcaption><\/figure>\n<div>\n<p>Carlo Rovelli est d\u2019abord un physicien exceptionnel. Il a invent\u00e9 &#8211; avec Lee Smolin &#8211; la gravitation quantique \u00e0 boucle qui est l\u2019une des rares th\u00e9ories prometteuses tentant de concilier la relativit\u00e9 g\u00e9n\u00e9rale avec la physique quantique. Mais il a aussi contribu\u00e9 de fa\u00e7on notable \u00e0 la m\u00e9canique quantique elle-m\u00eame (surtout au niveau de l\u2019interpr\u00e9tation) et \u00e0 la relativit\u00e9 g\u00e9n\u00e9rale. Il a \u00e9galement lanc\u00e9 plusieurs directions de recherche qui se sont av\u00e9r\u00e9es tr\u00e8s fructueuses. Enfin, c\u2019est aussi un philosophe qui pense avec subtilit\u00e9 et lucidit\u00e9 sa discipline et le sens de la science en g\u00e9n\u00e9ral.<\/p>\n<p><!--more--><\/p>\n<figure id=\"attachment_580\" aria-describedby=\"caption-attachment-580\" style=\"width: 474px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-large wp-image-580\" src=\"https:\/\/blogs.futura-sciences.com\/barrau\/wp-content\/uploads\/sites\/12\/2016\/06\/FullSizeRender-1-768x1024.jpg\" alt=\"Aur\u00e9lien Barrau et Carlo Rovelli\" width=\"474\" height=\"632\" srcset=\"https:\/\/blogs.futura-sciences.com\/barrau\/wp-content\/uploads\/sites\/12\/2016\/06\/FullSizeRender-1-768x1024.jpg 768w, https:\/\/blogs.futura-sciences.com\/barrau\/wp-content\/uploads\/sites\/12\/2016\/06\/FullSizeRender-1-338x450.jpg 338w, https:\/\/blogs.futura-sciences.com\/barrau\/wp-content\/uploads\/sites\/12\/2016\/06\/FullSizeRender-1.jpg 1224w\" sizes=\"auto, (max-width: 474px) 100vw, 474px\" \/><figcaption id=\"caption-attachment-580\" class=\"wp-caption-text\">Aur\u00e9lien Barrau et Carlo Rovelli<\/figcaption><\/figure>\n<p>Mais, au-del\u00e0 de tout ceci, Carlo Rovelli est surtout un esprit libre et singulier. Il est de ces hommes rares qui concilient une immense exigence intellectuelle avec une incroyable bienveillance humaine. Il y a toujours, dans le regard de Carlo, une leur d\u2019amour et d\u2019intelligence qui &#8211; m\u00eame quand on s\u2019oppose \u00e0 lui &#8211; \u00ab\u00a0console d\u2019\u00eatre l\u00e0\u00a0\u00bb, pour reprendre les mots de Baudelaire sur Wager.<\/p>\n<figure id=\"attachment_578\" aria-describedby=\"caption-attachment-578\" style=\"width: 474px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-large wp-image-578\" src=\"https:\/\/blogs.futura-sciences.com\/barrau\/wp-content\/uploads\/sites\/12\/2016\/06\/unnamed-768x1024.jpg\" alt=\"Carlo Rovelli (photo A. Barrau)\" width=\"474\" height=\"632\" srcset=\"https:\/\/blogs.futura-sciences.com\/barrau\/wp-content\/uploads\/sites\/12\/2016\/06\/unnamed-768x1024.jpg 768w, https:\/\/blogs.futura-sciences.com\/barrau\/wp-content\/uploads\/sites\/12\/2016\/06\/unnamed-338x450.jpg 338w, https:\/\/blogs.futura-sciences.com\/barrau\/wp-content\/uploads\/sites\/12\/2016\/06\/unnamed.jpg 1224w\" sizes=\"auto, (max-width: 474px) 100vw, 474px\" \/><figcaption id=\"caption-attachment-578\" class=\"wp-caption-text\">Carlo Rovelli (photo A. Barrau)<\/figcaption><\/figure>\n<\/div>\n<div>\u00a0C\u2019est enfin un intellectuel engag\u00e9 (et un vulgarisateur exceptionnel, parce que jamais vulgaire, pr\u00e9cis\u00e9ment) et je crois que son courage est ici aussi exemplaire. Le fait est que les scientifiques qui osent prendre parti au niveau soci\u00e9tal ou s\u2019aventurer vers la litt\u00e9rature et la po\u00e9sie encourent souvent les foudres de certains veilleurs \u2026<\/div>\n<div><\/div>\n<div>\n<figure id=\"attachment_595\" aria-describedby=\"caption-attachment-595\" style=\"width: 474px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-595 size-large\" src=\"https:\/\/blogs.futura-sciences.com\/barrau\/wp-content\/uploads\/sites\/12\/2016\/06\/toto2-768x1024.jpg\" alt=\"toto2\" width=\"474\" height=\"632\" srcset=\"https:\/\/blogs.futura-sciences.com\/barrau\/wp-content\/uploads\/sites\/12\/2016\/06\/toto2-768x1024.jpg 768w, https:\/\/blogs.futura-sciences.com\/barrau\/wp-content\/uploads\/sites\/12\/2016\/06\/toto2-338x450.jpg 338w\" sizes=\"auto, (max-width: 474px) 100vw, 474px\" \/><figcaption id=\"caption-attachment-595\" class=\"wp-caption-text\">Un des livres de r\u00e9f\u00e9rence de Carlo Rovelli<\/figcaption><\/figure>\n<\/div>\n<div><\/div>\n<div>Lors de cette conf\u00e9rence conviviale de nombreux amis de Carlo ont \u00e9voqu\u00e9 des souvenirs communs et le caract\u00e8re d\u00e9terminant qu&#8217;il a jou\u00e9 dans leurs\u00a0parcours scientifiques.\u00a0Ted Jacobson (qui a montr\u00e9 les liens fort entre relativit\u00e9 g\u00e9n\u00e9rale et thermodynamique) a \u00e9t\u00e9 tr\u00e8s \u00e9mouvant, chantant avec sa guitar une reprise de Forever Young sp\u00e9cialement modifi\u00e9e pour Carlo. Abhay Ashtekar (qui a r\u00e9-\u00e9crit la relativit\u00e9 g\u00e9n\u00e9rale d&#8217;une mani\u00e8re permettant sa quantification) se fit plus comique et bout en train qu&#8217;\u00e0 son habitude ! Et Alain Connes (m\u00e9daille Fields de math\u00e9matiques) montra comment les id\u00e9es qu&#8217;il eut avec Caro Rovelli permettent de repenser en profondeur le sens du temps en physique.<\/div>\n<div><\/div>\n<div>\n<figure id=\"attachment_581\" aria-describedby=\"caption-attachment-581\" style=\"width: 474px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-large wp-image-581\" src=\"https:\/\/blogs.futura-sciences.com\/barrau\/wp-content\/uploads\/sites\/12\/2016\/06\/FullSizeRender-2-533x1024.jpg\" alt=\"Carlo Rovelli et Aur\u00e9lien Barrau\" width=\"474\" height=\"911\" srcset=\"https:\/\/blogs.futura-sciences.com\/barrau\/wp-content\/uploads\/sites\/12\/2016\/06\/FullSizeRender-2-533x1024.jpg 533w, https:\/\/blogs.futura-sciences.com\/barrau\/wp-content\/uploads\/sites\/12\/2016\/06\/FullSizeRender-2-234x450.jpg 234w, https:\/\/blogs.futura-sciences.com\/barrau\/wp-content\/uploads\/sites\/12\/2016\/06\/FullSizeRender-2.jpg 666w\" sizes=\"auto, (max-width: 474px) 100vw, 474px\" \/><figcaption id=\"caption-attachment-581\" class=\"wp-caption-text\">Carlo Rovelli et Aur\u00e9lien Barrau<\/figcaption><\/figure>\n<p>La conf\u00e9rence fut aussi l\u2019occasion d\u2019\u00e9changes purement scientifiques en pr\u00e9sence des plus grands sp\u00e9cialistes du domaine. Elle t\u00e9moigne de la grande vitalit\u00e9 de la communaut\u00e9 de \u00ab\u00a0gravitation quantique \u00e0 boucles\u00a0\u00bb. Il s\u2019agit d\u2019une tentative de conciliation de la physique d\u2019Einstein, d\u2019une part, avec celle de Schr\u00f6dinger, Heisenberg, Dirac, de Broglie, d\u2019autre part, sans ajouter des hypoth\u00e8ses suppl\u00e9mentaires drastiques comme c\u2019est le cas en th\u00e9orie des cordes. L\u2019espace devient, en quelque sorte, compos\u00e9 de petits atomes \u00e9l\u00e9mentaires. Plus pr\u00e9cis\u00e9ment, on nomme l\u2019image r\u00e9sultante un \u00ab\u00a0r\u00e9seau de spin\u00a0\u00bb.<\/p>\n<figure id=\"attachment_582\" aria-describedby=\"caption-attachment-582\" style=\"width: 474px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-large wp-image-582\" src=\"https:\/\/blogs.futura-sciences.com\/barrau\/wp-content\/uploads\/sites\/12\/2016\/06\/Capture-d\u2019\u00e9cran-2016-06-10-\u00e0-11.42.43-723x1024.png\" alt=\"Illustration libre d'une mousse de spin (dessin de Lucile Bienvenu)\" width=\"474\" height=\"671\" srcset=\"https:\/\/blogs.futura-sciences.com\/barrau\/wp-content\/uploads\/sites\/12\/2016\/06\/Capture-d\u2019\u00e9cran-2016-06-10-\u00e0-11.42.43-723x1024.png 723w, https:\/\/blogs.futura-sciences.com\/barrau\/wp-content\/uploads\/sites\/12\/2016\/06\/Capture-d\u2019\u00e9cran-2016-06-10-\u00e0-11.42.43-318x450.png 318w, https:\/\/blogs.futura-sciences.com\/barrau\/wp-content\/uploads\/sites\/12\/2016\/06\/Capture-d\u2019\u00e9cran-2016-06-10-\u00e0-11.42.43-768x1088.png 768w, https:\/\/blogs.futura-sciences.com\/barrau\/wp-content\/uploads\/sites\/12\/2016\/06\/Capture-d\u2019\u00e9cran-2016-06-10-\u00e0-11.42.43.png 898w\" sizes=\"auto, (max-width: 474px) 100vw, 474px\" \/><figcaption id=\"caption-attachment-582\" class=\"wp-caption-text\">Illustration libre d&#8217;une mousse de spin (dessin de Lucile Bienvenu)<\/figcaption><\/figure>\n<p>La th\u00e9orie de la gravitation quantique \u00e0 boucles est loin d\u2019\u00eatre achev\u00e9e. Il y a encore beaucoup de probl\u00e8mes \u00e0 r\u00e9soudre. Mais l\u2019ensemble des expos\u00e9s tent \u00e0 montrer que le corpus se fiabilise et devient coh\u00e9rent. Pour ma part, ainsi que Francesca Vidotto et Abhay Ashtekar, j\u2019ai surtout insist\u00e9 sur les possibles cons\u00e9quences observationnelles de la th\u00e9orie en ce qui concerne les trous noirs et l\u2019univers primordial.<\/p>\n<figure id=\"attachment_579\" aria-describedby=\"caption-attachment-579\" style=\"width: 474px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-large wp-image-579\" src=\"https:\/\/blogs.futura-sciences.com\/barrau\/wp-content\/uploads\/sites\/12\/2016\/06\/FullSizeRender-950x1024.jpg\" alt=\"Francesca Viadotto et Aur\u00e9lien Barrau\" width=\"474\" height=\"511\" srcset=\"https:\/\/blogs.futura-sciences.com\/barrau\/wp-content\/uploads\/sites\/12\/2016\/06\/FullSizeRender-950x1024.jpg 950w, https:\/\/blogs.futura-sciences.com\/barrau\/wp-content\/uploads\/sites\/12\/2016\/06\/FullSizeRender-418x450.jpg 418w, https:\/\/blogs.futura-sciences.com\/barrau\/wp-content\/uploads\/sites\/12\/2016\/06\/FullSizeRender-768x827.jpg 768w, https:\/\/blogs.futura-sciences.com\/barrau\/wp-content\/uploads\/sites\/12\/2016\/06\/FullSizeRender.jpg 1188w\" sizes=\"auto, (max-width: 474px) 100vw, 474px\" \/><figcaption id=\"caption-attachment-579\" class=\"wp-caption-text\">Francesca Viadotto et Aur\u00e9lien Barrau<\/figcaption><\/figure>\n<p>Cette aventure n&#8217;en est qu&#8217;\u00e0 son d\u00e9but\u00a0et Carlo Rovelli est un \u00e9tonnant et r\u00e9jouissant capitaine pour notre \u00e9quipe de pirates et de corsaires. Nous verrons o\u00f9 la mer nous porte &#8230;<\/p>\n<figure id=\"attachment_601\" aria-describedby=\"caption-attachment-601\" style=\"width: 474px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-large wp-image-601\" src=\"https:\/\/blogs.futura-sciences.com\/barrau\/wp-content\/uploads\/sites\/12\/2016\/06\/unnamed-1-1024x768.jpg\" alt=\"Carlo Rovelli au diner de la conf\u00e9rence\" width=\"474\" height=\"356\" srcset=\"https:\/\/blogs.futura-sciences.com\/barrau\/wp-content\/uploads\/sites\/12\/2016\/06\/unnamed-1-1024x768.jpg 1024w, https:\/\/blogs.futura-sciences.com\/barrau\/wp-content\/uploads\/sites\/12\/2016\/06\/unnamed-1-450x338.jpg 450w, https:\/\/blogs.futura-sciences.com\/barrau\/wp-content\/uploads\/sites\/12\/2016\/06\/unnamed-1-768x576.jpg 768w, https:\/\/blogs.futura-sciences.com\/barrau\/wp-content\/uploads\/sites\/12\/2016\/06\/unnamed-1.jpg 1632w\" sizes=\"auto, (max-width: 474px) 100vw, 474px\" \/><figcaption id=\"caption-attachment-601\" class=\"wp-caption-text\">Carlo Rovelli au diner de la conf\u00e9rence<\/figcaption><\/figure>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-587\" src=\"https:\/\/blogs.futura-sciences.com\/barrau\/wp-content\/uploads\/sites\/12\/2016\/06\/Capture-d\u2019\u00e9cran-2016-06-10-\u00e0-11.53.42.png\" alt=\"Capture d\u2019\u00e9cran 2016-06-10 \u00e0 11.53.42\" width=\"896\" height=\"572\" srcset=\"https:\/\/blogs.futura-sciences.com\/barrau\/wp-content\/uploads\/sites\/12\/2016\/06\/Capture-d\u2019\u00e9cran-2016-06-10-\u00e0-11.53.42.png 896w, https:\/\/blogs.futura-sciences.com\/barrau\/wp-content\/uploads\/sites\/12\/2016\/06\/Capture-d\u2019\u00e9cran-2016-06-10-\u00e0-11.53.42-450x287.png 450w, https:\/\/blogs.futura-sciences.com\/barrau\/wp-content\/uploads\/sites\/12\/2016\/06\/Capture-d\u2019\u00e9cran-2016-06-10-\u00e0-11.53.42-768x490.png 768w\" sizes=\"auto, (max-width: 896px) 100vw, 896px\" \/><\/p>\n<\/div>\n<!-- AddThis Advanced Settings generic via filter on the_content --><!-- AddThis Share Buttons generic via filter on the_content -->","protected":false},"excerpt":{"rendered":"<p>Il y a quelques semaines, eut lieu \u00e0 Marseille une conf\u00e9rence internationale un peu particuli\u00e8re. Il \u00e9tait en effet question \u00e0 la fois de r\u00e9unir les sp\u00e9cialistes de gravitation quantique \u00e0 boucles pour discuter des derni\u00e8res avanc\u00e9es de la th\u00e9orie &#8211; comme il est d\u2019usage dans les congr\u00e8s &#8211; mais aussi de f\u00eater le soixanti\u00e8me &hellip; <a href=\"https:\/\/blogs.futura-sciences.com\/barrau\/2016\/06\/10\/anniversaire-carlo-rovelli\/\" class=\"more-link\">Continuer la lecture de <span class=\"screen-reader-text\">Bon anniversaire, Carlo Rovelli !<\/span>  <span class=\"meta-nav\">&rarr;<\/span><\/a><!-- AddThis Advanced Settings generic via filter on get_the_excerpt --><!-- AddThis Share Buttons generic via filter on get_the_excerpt --><\/p>\n","protected":false},"author":10,"featured_media":590,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[5],"tags":[82,83],"class_list":["post-583","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-science","tag-carlo-rovelli","tag-gravitation-quantique-a-boucles"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Bon anniversaire, Carlo Rovelli !, par Aur\u00e9lien BARRAU<\/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:\/\/blogs.futura-sciences.com\/barrau\/2016\/06\/10\/anniversaire-carlo-rovelli\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Bon anniversaire, Carlo Rovelli !, par Aur\u00e9lien BARRAU\" \/>\n<meta property=\"og:description\" content=\"Il y a quelques semaines, eut lieu \u00e0 Marseille une conf\u00e9rence internationale un peu particuli\u00e8re. 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