(2, 0) theory on S5× S1 and quantum M2 branes

M Beccaria, S Giombi, AA Tseytlin - Nuclear Physics B, 2024 - Elsevier
The superconformal index Z of the 6d (2, 0) theory on S 5× S 1 (which is related to the
localization partition function of 5d SYM on S 5) should be captured at large N by the …

Surface defects in the O (N) model

M Trépanier - Journal of High Energy Physics, 2023 - Springer
A bstract I study the two-dimensional defects of the d dimensional critical O (N) model and
the defect RG flows between them. By combining the ϵ-expansion around d= 4 and d= 6 as …

Line and surface defects for the free scalar field

E Lauria, P Liendo, BC Van Rees, X Zhao - Journal of High Energy Physics, 2021 - Springer
A bstract For a single free scalar field in d≥ 2 dimensions, almost all the unitary conformal
defects must be 'trivial'in the sense that they cannot hold interesting dynamics. The only …

Broken global symmetries and defect conformal manifolds

N Drukker, Z Kong, G Sakkas - Physical Review Letters, 2022 - APS
Just as exactly marginal operators allow one to deform a conformal field theory along the
space of theories known as the conformal manifold, appropriate operators on conformal …

Classifying superconformal defects in diverse dimensions part I: superconformal lines

NB Agmon, Y Wang - arXiv preprint arXiv:2009.06650, 2020 - arxiv.org
We initiate the classification of unitary superconformal defects in unitary superconformal field
theories (SCFT) of diverse spacetime dimensions $3\leq d\leq 6$. Our method explores …

Defect CFT in the 6d (2, 0) theory from M2 brane dynamics in AdS7× S4

N Drukker, S Giombi, AA Tseytlin, X Zhou - Journal of High Energy Physics, 2020 - Springer
A bstract Surface operators in the 6d (2, 0) theory at large N have a holographic description
in terms of M2 branes probing the AdS 7× S 4 M-theory background. The most symmetric …

Bootstrapping string dynamics in the 6d =(2, 0) theories

C Meneghelli, M Trépanier - Journal of High Energy Physics, 2023 - Springer
A bstract We present two complementary approaches to calculating the 2-point function of
stress tensors in the presence of a 1/2 BPS surface defect of the 6d 𝒩=(2, 0) theories. First …

Surface defect, anomalies and b-extremization

Y Wang - Journal of High Energy Physics, 2021 - Springer
A bstract Quantum field theories (QFT) in the presence of defects exhibit new types of
anomalies which play an important role in constraining the defect dynamics and defect …

Non-perturbative defects in tensor models from melonic trees

FK Popov, Y Wang - Journal of High Energy Physics, 2022 - Springer
A bstract The Klebanov-Tarnopolsky tensor model is a quantum field theory for rank-three
tensor scalar fields with certain quartic potential. The theory possesses an unusual large N …

Defect CFT techniques in the 6d = (2, 0) theory

N Drukker, M Probst, M Trépanier - Journal of High Energy Physics, 2021 - Springer
A bstract Surface operators are among the most important observables of the 6d\(\mathcal
{N}\)=(2, 0) theory. Here we apply the tools of defect CFT to study local operator insertions …