{"id":1797,"date":"2015-03-20T18:39:41","date_gmt":"2015-03-20T16:39:41","guid":{"rendered":"http:\/\/phsites.technion.ac.il\/strings\/?p=1797"},"modified":"2015-03-22T12:05:17","modified_gmt":"2015-03-22T10:05:17","slug":"an-anomalous-propulsion-mechanism","status":"publish","type":"post","link":"https:\/\/phsites.technion.ac.il\/strings\/an-anomalous-propulsion-mechanism\/","title":{"rendered":"An anomalous propulsion mechanism"},"content":{"rendered":"<p>Noether&#8217;s theorem relates symmetries to conservation laws. In a classical theory, a symmetry of the action implies an associated conserved charge. This relation does not necessarily hold in a quantum theory. Indeed, a\u00a0the violation of what would seem like a symmetry of the theory due to quantum effects is referred to as an anomaly. In a <a href=\"http:\/\/arxiv.org\/pdf\/1411.5581v1.pdf\">recent paper<\/a>, E. Shaverin and A. Yarom have argued that such a quantum mechanical effect should be made visible at a macroscopic level. In particular, they\u00a0consider a gas of particles whose dynamics are governed by an anomalous theory, and which is trapped inside a spherical rotating shell. If the gas is instantaneously released from the shell then the anomaly would force the emission of the gas to be directional which implies, via momentum conservation that the shell will be propelled forward. This is an instance were a subtle quantum mechanical effect has a large scale manifestation.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Noether&#8217;s theorem relates symmetries to conservation laws. In a classical theory, a symmetry of the action implies an associated conserved charge. This relation does not necessarily hold in a quantum theory. Indeed, a\u00a0the violation of what would seem like a symmetry of the theory due to quantum effects is referred to as an anomaly. In &hellip;<\/p>\n","protected":false},"author":18,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[1],"tags":[],"class_list":{"0":"post-1797","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-uncategorized","7":"entry"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>An anomalous propulsion mechanism - Technion-Haifa University String Theory Group<\/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:\/\/phsites.technion.ac.il\/strings\/an-anomalous-propulsion-mechanism\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"An anomalous propulsion mechanism - Technion-Haifa University String Theory Group\" \/>\n<meta property=\"og:description\" content=\"Noether&#8217;s theorem relates symmetries to conservation laws. In a classical theory, a symmetry of the action implies an associated conserved charge. This relation does not necessarily hold in a quantum theory. Indeed, a\u00a0the violation of what would seem like a symmetry of the theory due to quantum effects is referred to as an anomaly. In &hellip;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/phsites.technion.ac.il\/strings\/an-anomalous-propulsion-mechanism\/\" \/>\n<meta property=\"og:site_name\" content=\"Technion-Haifa University String Theory Group\" \/>\n<meta property=\"article:published_time\" content=\"2015-03-20T16:39:41+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2015-03-22T10:05:17+00:00\" \/>\n<meta name=\"author\" content=\"ayarom\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"ayarom\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/phsites.technion.ac.il\\\/strings\\\/an-anomalous-propulsion-mechanism\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/phsites.technion.ac.il\\\/strings\\\/an-anomalous-propulsion-mechanism\\\/\"},\"author\":{\"name\":\"ayarom\",\"@id\":\"https:\\\/\\\/phsites.technion.ac.il\\\/strings\\\/#\\\/schema\\\/person\\\/09b47ce82ec9da7756f780b60508c803\"},\"headline\":\"An anomalous propulsion mechanism\",\"datePublished\":\"2015-03-20T16:39:41+00:00\",\"dateModified\":\"2015-03-22T10:05:17+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/phsites.technion.ac.il\\\/strings\\\/an-anomalous-propulsion-mechanism\\\/\"},\"wordCount\":159,\"publisher\":{\"@id\":\"https:\\\/\\\/phsites.technion.ac.il\\\/strings\\\/#organization\"},\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/phsites.technion.ac.il\\\/strings\\\/an-anomalous-propulsion-mechanism\\\/\",\"url\":\"https:\\\/\\\/phsites.technion.ac.il\\\/strings\\\/an-anomalous-propulsion-mechanism\\\/\",\"name\":\"An anomalous propulsion mechanism - Technion-Haifa University String Theory Group\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/phsites.technion.ac.il\\\/strings\\\/#website\"},\"datePublished\":\"2015-03-20T16:39:41+00:00\",\"dateModified\":\"2015-03-22T10:05:17+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/phsites.technion.ac.il\\\/strings\\\/an-anomalous-propulsion-mechanism\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/phsites.technion.ac.il\\\/strings\\\/an-anomalous-propulsion-mechanism\\\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/phsites.technion.ac.il\\\/strings\\\/an-anomalous-propulsion-mechanism\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/phsites.technion.ac.il\\\/strings\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"An anomalous propulsion mechanism\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/phsites.technion.ac.il\\\/strings\\\/#website\",\"url\":\"https:\\\/\\\/phsites.technion.ac.il\\\/strings\\\/\",\"name\":\"Technion-Haifa University String Theory Group\",\"description\":\"Technion-Haifa University String Theory Group\",\"publisher\":{\"@id\":\"https:\\\/\\\/phsites.technion.ac.il\\\/strings\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/phsites.technion.ac.il\\\/strings\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/phsites.technion.ac.il\\\/strings\\\/#organization\",\"name\":\"Technion-Haifa University String Theory Group\",\"url\":\"https:\\\/\\\/phsites.technion.ac.il\\\/strings\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/phsites.technion.ac.il\\\/strings\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/phsites.technion.ac.il\\\/strings\\\/wp-content\\\/uploads\\\/sites\\\/23\\\/2020\\\/09\\\/string-logo-2020-1.png\",\"contentUrl\":\"https:\\\/\\\/phsites.technion.ac.il\\\/strings\\\/wp-content\\\/uploads\\\/sites\\\/23\\\/2020\\\/09\\\/string-logo-2020-1.png\",\"width\":600,\"height\":100,\"caption\":\"Technion-Haifa University String Theory Group\"},\"image\":{\"@id\":\"https:\\\/\\\/phsites.technion.ac.il\\\/strings\\\/#\\\/schema\\\/logo\\\/image\\\/\"}},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/phsites.technion.ac.il\\\/strings\\\/#\\\/schema\\\/person\\\/09b47ce82ec9da7756f780b60508c803\",\"name\":\"ayarom\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/fea1c283081db7d76d6cac5320397cb20417ddfeb878f3f5103c4888733e461a?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/fea1c283081db7d76d6cac5320397cb20417ddfeb878f3f5103c4888733e461a?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/fea1c283081db7d76d6cac5320397cb20417ddfeb878f3f5103c4888733e461a?s=96&d=mm&r=g\",\"caption\":\"ayarom\"},\"url\":\"https:\\\/\\\/phsites.technion.ac.il\\\/strings\\\/author\\\/ayarom\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"An anomalous propulsion mechanism - Technion-Haifa University String Theory Group","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/phsites.technion.ac.il\/strings\/an-anomalous-propulsion-mechanism\/","og_locale":"en_US","og_type":"article","og_title":"An anomalous propulsion mechanism - Technion-Haifa University String Theory Group","og_description":"Noether&#8217;s theorem relates symmetries to conservation laws. In a classical theory, a symmetry of the action implies an associated conserved charge. This relation does not necessarily hold in a quantum theory. Indeed, a\u00a0the violation of what would seem like a symmetry of the theory due to quantum effects is referred to as an anomaly. In &hellip;","og_url":"https:\/\/phsites.technion.ac.il\/strings\/an-anomalous-propulsion-mechanism\/","og_site_name":"Technion-Haifa University String Theory Group","article_published_time":"2015-03-20T16:39:41+00:00","article_modified_time":"2015-03-22T10:05:17+00:00","author":"ayarom","twitter_misc":{"Written by":"ayarom","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/phsites.technion.ac.il\/strings\/an-anomalous-propulsion-mechanism\/#article","isPartOf":{"@id":"https:\/\/phsites.technion.ac.il\/strings\/an-anomalous-propulsion-mechanism\/"},"author":{"name":"ayarom","@id":"https:\/\/phsites.technion.ac.il\/strings\/#\/schema\/person\/09b47ce82ec9da7756f780b60508c803"},"headline":"An anomalous propulsion mechanism","datePublished":"2015-03-20T16:39:41+00:00","dateModified":"2015-03-22T10:05:17+00:00","mainEntityOfPage":{"@id":"https:\/\/phsites.technion.ac.il\/strings\/an-anomalous-propulsion-mechanism\/"},"wordCount":159,"publisher":{"@id":"https:\/\/phsites.technion.ac.il\/strings\/#organization"},"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/phsites.technion.ac.il\/strings\/an-anomalous-propulsion-mechanism\/","url":"https:\/\/phsites.technion.ac.il\/strings\/an-anomalous-propulsion-mechanism\/","name":"An anomalous propulsion mechanism - Technion-Haifa University String Theory Group","isPartOf":{"@id":"https:\/\/phsites.technion.ac.il\/strings\/#website"},"datePublished":"2015-03-20T16:39:41+00:00","dateModified":"2015-03-22T10:05:17+00:00","breadcrumb":{"@id":"https:\/\/phsites.technion.ac.il\/strings\/an-anomalous-propulsion-mechanism\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/phsites.technion.ac.il\/strings\/an-anomalous-propulsion-mechanism\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/phsites.technion.ac.il\/strings\/an-anomalous-propulsion-mechanism\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/phsites.technion.ac.il\/strings\/"},{"@type":"ListItem","position":2,"name":"An anomalous propulsion mechanism"}]},{"@type":"WebSite","@id":"https:\/\/phsites.technion.ac.il\/strings\/#website","url":"https:\/\/phsites.technion.ac.il\/strings\/","name":"Technion-Haifa University String Theory Group","description":"Technion-Haifa University String Theory Group","publisher":{"@id":"https:\/\/phsites.technion.ac.il\/strings\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/phsites.technion.ac.il\/strings\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/phsites.technion.ac.il\/strings\/#organization","name":"Technion-Haifa University String Theory Group","url":"https:\/\/phsites.technion.ac.il\/strings\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/phsites.technion.ac.il\/strings\/#\/schema\/logo\/image\/","url":"https:\/\/phsites.technion.ac.il\/strings\/wp-content\/uploads\/sites\/23\/2020\/09\/string-logo-2020-1.png","contentUrl":"https:\/\/phsites.technion.ac.il\/strings\/wp-content\/uploads\/sites\/23\/2020\/09\/string-logo-2020-1.png","width":600,"height":100,"caption":"Technion-Haifa University String Theory Group"},"image":{"@id":"https:\/\/phsites.technion.ac.il\/strings\/#\/schema\/logo\/image\/"}},{"@type":"Person","@id":"https:\/\/phsites.technion.ac.il\/strings\/#\/schema\/person\/09b47ce82ec9da7756f780b60508c803","name":"ayarom","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/secure.gravatar.com\/avatar\/fea1c283081db7d76d6cac5320397cb20417ddfeb878f3f5103c4888733e461a?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/fea1c283081db7d76d6cac5320397cb20417ddfeb878f3f5103c4888733e461a?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/fea1c283081db7d76d6cac5320397cb20417ddfeb878f3f5103c4888733e461a?s=96&d=mm&r=g","caption":"ayarom"},"url":"https:\/\/phsites.technion.ac.il\/strings\/author\/ayarom\/"}]}},"featured_image_src":null,"featured_image_src_square":null,"author_info":{"display_name":"ayarom","author_link":"https:\/\/phsites.technion.ac.il\/strings\/author\/ayarom\/"},"_links":{"self":[{"href":"https:\/\/phsites.technion.ac.il\/strings\/wp-json\/wp\/v2\/posts\/1797","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/phsites.technion.ac.il\/strings\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/phsites.technion.ac.il\/strings\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/phsites.technion.ac.il\/strings\/wp-json\/wp\/v2\/users\/18"}],"replies":[{"embeddable":true,"href":"https:\/\/phsites.technion.ac.il\/strings\/wp-json\/wp\/v2\/comments?post=1797"}],"version-history":[{"count":0,"href":"https:\/\/phsites.technion.ac.il\/strings\/wp-json\/wp\/v2\/posts\/1797\/revisions"}],"wp:attachment":[{"href":"https:\/\/phsites.technion.ac.il\/strings\/wp-json\/wp\/v2\/media?parent=1797"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/phsites.technion.ac.il\/strings\/wp-json\/wp\/v2\/categories?post=1797"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/phsites.technion.ac.il\/strings\/wp-json\/wp\/v2\/tags?post=1797"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}