Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Non-split and split deformations of AdS_5   The eta-deformation of the AdS_5 x S^5 superstring depends on a non-split r
matrix for the superalgebra psu(2,2|4). Much of the investigation into this
model has considered one particular choice, however there are a number of
inequivalent alternatives. This is also true for the bosonic sector of the
theory with su(2,2), the isometry algebra of AdS_5, admitting one split and
three non-split r matrices. In this article we explore these r matrices and the
corresponding geometries. We investigate their contraction limits, comment on
supergravity backgrounds and demonstrate their relation to gauged-WZW
deformations. We then extend the three non-split cases to AdS_5 x S^5 and
compute four separate bosonic two-particle tree-level S-matrices based on
inequivalent BMN-type light-cone gauges. The resulting S-matrices, while
different, are related by momentum-dependent one-particle changes of basis.

25
The categories of this paper are: patt-sol
30
The categories of this paper are: q-alg
8
The categories of this paper are: hep-ex
16
The categories of this paper are: stat
27
The categories of this paper are: comp-gas
31
The categories of this paper are: ao-sci
3
The categories of this paper are: physics
21
The categories of this paper are: adap-org
36
The categories of this paper are: cmp-lg
20
The categories of this paper are: acc-phys
18
The categories of this paper are: econ
22
The categories of this paper are: chao-dyn
37
The categories of this paper are: supr-con
13
The categories of this paper are: quant-ph
0
The categories of this paper are: hep-ph
1
The categories of this paper are: cs