Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Two Point Functions in Defect CFTs   This paper is designed to be a practical tool for constructing and
investigating two-point correlation functions in defect conformal field theory,
directly in physical space, between any two bulk primaries or between a bulk
primary and a defect primary, with arbitrary spin. Although geometrically
elegant and ultimately a more powerful approach, the embedding space formalism
gets rather cumbersome when dealing with mixed symmetry tensors, especially in
the projection to physical space. The results in this paper provide an
alternative method for studying two-point correlation functions for a generic
$d$-dimensional conformal field theory with a flat $p$-dimensional defect and
$d-p=q$ co-dimensions. We tabulate some examples of correlation functions
involving a conserved current, an energy momentum tensor and a Maxwell field
strength, while analysing the constraints arising from conservation and the
equations of motion. A method for obtaining bulk-to-defect correlators is also
explained. Some explicit examples are considered: free scalar theory on
$\mathbb{R}^p \times ({\mathbb R}^q / {\mathbb Z}_2)$ and a free four
dimensional Maxwell theory on a wedge.

22
The categories of this paper are: chao-dyn
17
The categories of this paper are: q-fin
21
The categories of this paper are: adap-org
32
The categories of this paper are: atom-ph
27
The categories of this paper are: comp-gas
33
The categories of this paper are: plasm-ph
16
The categories of this paper are: stat
29
The categories of this paper are: funct-an
30
The categories of this paper are: q-alg
5
The categories of this paper are: gr-qc
25
The categories of this paper are: patt-sol
6
The categories of this paper are: astro-ph
9
The categories of this paper are: nlin
15
The categories of this paper are: nucl-ex
23
The categories of this paper are: solv-int
35
The categories of this paper are: mtrl-th