{"id":1785,"date":"2012-08-28T13:19:45","date_gmt":"2012-08-28T20:19:45","guid":{"rendered":"http:\/\/qpr.ca\/blogs\/?p=1785"},"modified":"2012-08-28T13:19:45","modified_gmt":"2012-08-28T20:19:45","slug":"on-wavefunction-collapse-in-qm","status":"publish","type":"post","link":"https:\/\/qpr.ca\/blogs\/2012\/08\/28\/on-wavefunction-collapse-in-qm\/","title":{"rendered":"On Wavefunction Collapse in QM"},"content":{"rendered":"<p><a href=\"http:\/\/infoproc.blogspot.ca\/2012\/08\/quantum-correspondence.html\">This<\/a>, and especially <a href='http:\/\/duende.uoregon.edu\/~hsu\/talks\/benasque_2010.pdf'>this<\/a>, reminds me of something I did long ago which, it turned out, had already been done by Hepp expanding on von Neumann&#8217;s treatment of the measurement problem.<\/p>\n<p>The idea was to explain &#8220;collapse&#8221; of the superposition into a mixed state on the basis of having the measurement process consist of interaction with a macroscopic apparatus which would typically of course always be prepared in a mixed state itself.<\/p>\n<p>I haven&#8217;t really thought how the &#8220;many worlds&#8221; approach relates to the &#8220;mixed state of apparatus&#8221; idea, but the latter seems to me more natural and does not seem to require the extra philosophical overhead. <\/p>\n","protected":false},"excerpt":{"rendered":"<p>This, and especially this, reminds me of something I did long ago which, it turned out, had already been done by Hepp expanding on von Neumann&#8217;s treatment of the measurement problem. The idea was to explain &#8220;collapse&#8221; of the superposition &hellip; <a href=\"https:\/\/qpr.ca\/blogs\/2012\/08\/28\/on-wavefunction-collapse-in-qm\/\">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":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1785","post","type-post","status-publish","format-standard","hentry","category-general"],"_links":{"self":[{"href":"https:\/\/qpr.ca\/blogs\/wp-json\/wp\/v2\/posts\/1785","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/qpr.ca\/blogs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/qpr.ca\/blogs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/qpr.ca\/blogs\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/qpr.ca\/blogs\/wp-json\/wp\/v2\/comments?post=1785"}],"version-history":[{"count":1,"href":"https:\/\/qpr.ca\/blogs\/wp-json\/wp\/v2\/posts\/1785\/revisions"}],"predecessor-version":[{"id":1786,"href":"https:\/\/qpr.ca\/blogs\/wp-json\/wp\/v2\/posts\/1785\/revisions\/1786"}],"wp:attachment":[{"href":"https:\/\/qpr.ca\/blogs\/wp-json\/wp\/v2\/media?parent=1785"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/qpr.ca\/blogs\/wp-json\/wp\/v2\/categories?post=1785"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/qpr.ca\/blogs\/wp-json\/wp\/v2\/tags?post=1785"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}