Seminar detail: Conformal field theory with composite defect

Date&Time	Tue Dec 17 2024 (17:00 - 18:00)
Speaker	Soichiro Shimamori
Affiliation	Osaka University
Title	Conformal field theory with composite defect
Abstract	We explore higher-dimensional conformal field theories (CFTs) in the presence of a conformal defect that itself hosts another sub-dimensional defect. We refer to this new kind of conformal defect as the composite defect. We elaborate on the various conformal properties of the composite defect CFTs, including correlation functions, operator expansions, and conformal block expansions. As an example, we present a free O(N) vector model in the presence of a composite defect. Assuming the averaged null energy condition (ANEC) does hold even for the defect systems, we conclude that some boundary conditions can be excluded. Our investigations shed light on the rich phenomenology arising from hierarchical
Remarks	Zoom link: https://us06web.zoom.us/j/89518126028
Slide/Video