{"id":12997,"date":"2022-07-29T15:01:04","date_gmt":"2022-07-29T19:01:04","guid":{"rendered":"https:\/\/www.math.columbia.edu\/~woit\/wordpress\/?p=12997"},"modified":"2022-07-29T15:22:38","modified_gmt":"2022-07-29T19:22:38","slug":"before-the-big-bang-the-origin-of-the-universe-from-the-multiverse","status":"publish","type":"post","link":"https:\/\/www.math.columbia.edu\/~woit\/wordpress\/?p=12997","title":{"rendered":"Before the Big Bang: The Origin of the Universe from the Multiverse"},"content":{"rendered":"<p>There&#8217;s a new book out this month, <a href=\"https:\/\/www.penguin.co.uk\/books\/438439\/before-the-big-bang-by-mersini-houghton-laura\/9781847925510\">Before the Big Bang: The Origin of the Universe from the Multiverse<\/a>, about which we&#8217;re told:<\/p>\n<blockquote><p>One of the world&#8217;s most celebrated cosmologists presents her breakthrough explanation of our origins in the multiverse.<\/p>\n<p>In recent years, Laura Mersini-Houghton&#8217;s ground-breaking theory, spectacularly vindicated with observational evidence, has turned the multiverse from philosophical speculation to one of the most compelling and credible explanations of our universe&#8217;s origins.<\/p><\/blockquote>\n<p>I spent a few minutes today looking through the book in the bookstore, trying to figure out where to find the details of the &#8220;spectacularly vindicated with observational evidence.&#8221;  I didn&#8217;t see any references in the book, just a claim that in 2018 the author collaborated with Eleonora Di Valentino on showing vindication by observation.  Presumably this is a reference to <a href=\"https:\/\/arxiv.org\/abs\/1612.09588\">these<\/a> <a href=\"https:\/\/arxiv.org\/abs\/1612.08334\">three<\/a> <a href=\"https:\/\/arxiv.org\/abs\/1807.10833\">papers<\/a>, but who knows.  I don&#8217;t see anything like that in a quick look at the papers. <\/p>\n<p>For many years I&#8217;ve spent a significant amount of time reading books and papers purporting to offer scientific evidence for a multiverse, trying to carefully understand the author&#8217;s arguments and write about them here (one example involved earlier claims by this author, see <a href=\"https:\/\/www.math.columbia.edu\/~woit\/wordpress\/?p=5966\">here<\/a>).  Few physicists though seem to care that bogus claims and pseudo-science about the multiverse have overrun their field and become its public face. I&#8217;ve come to the conclusion that best to not waste more time on this.<\/p>\n<p><strong>Update<\/strong>:  Will Kinney reminds me that he wrote a paper about this, see <a href=\"https:\/\/arxiv.org\/abs\/1606.00672\">here<\/a>, as well as <a href=\"https:\/\/www.math.columbia.edu\/~woit\/wordpress\/?p=8918\">here<\/a> and <a href=\"http:\/\/www.math.columbia.edu\/~woit\/wordpress\/?p=8587\">here<\/a> for more about the story of that paper. Also see another old posting, <a href=\"http:\/\/www.math.columbia.edu\/~woit\/wordpress\/?p=5907\">here<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>There&#8217;s a new book out this month, Before the Big Bang: The Origin of the Universe from the Multiverse, about which we&#8217;re told: One of the world&#8217;s most celebrated cosmologists presents her breakthrough explanation of our origins in the multiverse. &hellip; <a href=\"https:\/\/www.math.columbia.edu\/~woit\/wordpress\/?p=12997\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[13,10],"tags":[],"class_list":["post-12997","post","type-post","status-publish","format-standard","hentry","category-book-reviews","category-multiverse-mania"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.math.columbia.edu\/~woit\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/12997","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.math.columbia.edu\/~woit\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.math.columbia.edu\/~woit\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.math.columbia.edu\/~woit\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.math.columbia.edu\/~woit\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=12997"}],"version-history":[{"count":5,"href":"https:\/\/www.math.columbia.edu\/~woit\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/12997\/revisions"}],"predecessor-version":[{"id":13002,"href":"https:\/\/www.math.columbia.edu\/~woit\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/12997\/revisions\/13002"}],"wp:attachment":[{"href":"https:\/\/www.math.columbia.edu\/~woit\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=12997"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.math.columbia.edu\/~woit\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=12997"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.math.columbia.edu\/~woit\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=12997"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}