On November 26 we will have a seminar by<\/p>\n\n\n\n
Paul Townsend<\/strong> (Cambridge U., DAMTP)<\/p>\n\n\n\n Title<\/strong>: Interacting alternatives to Maxwell\u2019s equations preserving Abstract<\/strong>: Meeting information: Slides are available at You can watch the recording at On November 26 we will have a seminar by Paul Townsend (Cambridge U., DAMTP) Title: Interacting alternatives to Maxwell\u2019s equations preservingconformal and duality invariance Abstract:The source-free Maxwell\u2019s equations are both conformal invariant andinvariant under an SO(2) electromagnetic duality group. It is commonlythought that these conditions imply their uniqueness. However, there aretwo interacting electrodynamics theories with … Continue reading “Seminar November 26: P. Townsend”<\/span><\/a><\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-211","post","type-post","status-publish","format-standard","hentry","category-seminar"],"_links":{"self":[{"href":"https:\/\/web.infn.it\/strings\/wp-json\/wp\/v2\/posts\/211","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/web.infn.it\/strings\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/web.infn.it\/strings\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/web.infn.it\/strings\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/web.infn.it\/strings\/wp-json\/wp\/v2\/comments?post=211"}],"version-history":[{"count":4,"href":"https:\/\/web.infn.it\/strings\/wp-json\/wp\/v2\/posts\/211\/revisions"}],"predecessor-version":[{"id":222,"href":"https:\/\/web.infn.it\/strings\/wp-json\/wp\/v2\/posts\/211\/revisions\/222"}],"wp:attachment":[{"href":"https:\/\/web.infn.it\/strings\/wp-json\/wp\/v2\/media?parent=211"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/web.infn.it\/strings\/wp-json\/wp\/v2\/categories?post=211"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/web.infn.it\/strings\/wp-json\/wp\/v2\/tags?post=211"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
conformal and duality invariance<\/p>\n\n\n\n
The source-free Maxwell\u2019s equations are both conformal invariant and
invariant under an SO(2) electromagnetic duality group. It is commonly
thought that these conditions imply their uniqueness. However, there are
two interacting electrodynamics theories with the same field content and
all the symmetries of Maxwell’s equations. One was found in 1983 by
Bialynicki-Birula from a strong-field limit of Born-Infeld theory; it has
an enhanced Sl(2;R)-duality invariance. The other, dubbed “ModMax”, was
found very recently from a weak-field limit of a ‘generalized’ Born-Infeld
theory; it has a dimensionless coupling constant and reduces to Maxwell
for zero coupling. This talk will review the main features of both
Bialynicki-Birula and ModMax electrodynamics.<\/p>\n\n\n\n
26th of November at 14:30 Italian Time
Zoom Meeting https:\/\/zoom.us\/j\/198435430<\/a><\/strong><\/p>\n\n\n\n
https:\/\/pandora.infn.it\/public\/cf0ae7<\/a><\/p>\n\n\n\n
https:\/\/pandora.infn.it\/public\/35895c<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"