Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Simple loop integrals and amplitudes in N=4 SYM   We use momentum twistors to evaluate planar loop integrals. Infrared
divergences are regulated by the recently proposed AdS-inspired mass regulator.
We show that two-loop amplitudes in N=4 super Yang-Mills can be expanded in
terms of basis integrals having twistor numerators. We argue that these
integrals are considerably simpler compared to the ones conventionally used.
Our case in point is the two-loop six-point MHV amplitude. We present
analytical results for the remainder function in a kinematical limit, and find
agreement with a recent Wilson loop computation. We also provide two-loop
evidence that the logarithm of MHV amplitudes can be written in terms of simple
twistor space integrals.

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
14
The categories of this paper are: math-ph
25
The categories of this paper are: patt-sol
4
The categories of this paper are: cond-mat
12
The categories of this paper are: nucl-th
37
The categories of this paper are: supr-con
15
The categories of this paper are: nucl-ex
33
The categories of this paper are: plasm-ph
29
The categories of this paper are: funct-an
20
The categories of this paper are: acc-phys
23
The categories of this paper are: solv-int
1
The categories of this paper are: cs
28
The categories of this paper are: alg-geom
31
The categories of this paper are: ao-sci