Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Norms and scalar products for AdS_3   We compute scalar products and norms of Bethe vectors in the massless sector
of AdS_3 integrable superstring theories, by exploiting the general difference
form of the S-matrix of massless excitations in the pure Ramond-Ramond case,
and the difference form valid only in the BMN limit in the mixed-flux case. We
obtain determinant-like formulas for the scalar products, generalising a
procedure developed in previous literature for standard R-matrices to the
present non-conventional situation. We verify our expressions against explicit
calculations using Bethe vectors for chains of small length, and perform some
computer tests of the exact formulas as far as numerical accuracy sustains us.
This should be the first step towards the derivation of integrable form-factors
and correlation functions for the AdS_3 S-matrix theory.

20
The categories of this paper are: acc-phys
25
The categories of this paper are: patt-sol
36
The categories of this paper are: cmp-lg
27
The categories of this paper are: comp-gas
18
The categories of this paper are: econ
31
The categories of this paper are: ao-sci
22
The categories of this paper are: chao-dyn
24
The categories of this paper are: dg-ga
13
The categories of this paper are: quant-ph
17
The categories of this paper are: q-fin
5
The categories of this paper are: gr-qc
6
The categories of this paper are: astro-ph
37
The categories of this paper are: supr-con
3
The categories of this paper are: physics
15
The categories of this paper are: nucl-ex
10
The categories of this paper are: q-bio