Things like this make me wonder if quantum physics isn’t all a hugely elaborate practical joke by scientists on the rest of us mere mortals. Negative probabilities? Seriously?<\/p>\n
<\/p>\n In physics<\/a>, Faddeev-Popov ghosts<\/a><\/b> (also called ghost fields<\/b>) are additional fields<\/a> which need to be introduced in the realization of gauge theories<\/a> as consistent quantum field theories<\/a>.<\/p>\n …<\/p>\n The Faddeev-Popov ghosts are sometimes referred to as “good ghosts<\/b>“. The “bad ghosts<\/b>” represent another, more general meaning of the word “ghost” in theoretical physics<\/a>: states of negative norm\u2014or fields with the wrong sign of the kinetic term, such as Pauli-Villars ghosts<\/a>\u2014whose existence allows the probabilities to be negative<\/a>.<\/p>\n <\/em><\/p>\n","protected":false},"excerpt":{"rendered":" Things like this make me wonder if quantum physics isn’t all a hugely elaborate practical joke by scientists on the rest of us mere mortals. Negative probabilities? Seriously? In physics, Faddeev-Popov ghosts (also called ghost fields) are additional fields which need to be introduced in the realization of gauge theories as consistent quantum field theories. … Continue reading Random article: Faddeev-Popov ghost<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[19,27],"tags":[],"class_list":["post-466","post","type-post","status-publish","format-standard","hentry","category-random-article","category-science"],"_links":{"self":[{"href":"https:\/\/moononastick.com\/blog\/wp-json\/wp\/v2\/posts\/466","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/moononastick.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/moononastick.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/moononastick.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/moononastick.com\/blog\/wp-json\/wp\/v2\/comments?post=466"}],"version-history":[{"count":1,"href":"https:\/\/moononastick.com\/blog\/wp-json\/wp\/v2\/posts\/466\/revisions"}],"predecessor-version":[{"id":547,"href":"https:\/\/moononastick.com\/blog\/wp-json\/wp\/v2\/posts\/466\/revisions\/547"}],"wp:attachment":[{"href":"https:\/\/moononastick.com\/blog\/wp-json\/wp\/v2\/media?parent=466"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/moononastick.com\/blog\/wp-json\/wp\/v2\/categories?post=466"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/moononastick.com\/blog\/wp-json\/wp\/v2\/tags?post=466"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}