Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Scattering and reflection positivity in relativistic Euclidean quantum
  mechanics   In this paper I discuss a formulation of relativistic few-particle scattering
theory where the dynamical input is a collection of reflection-positive
Euclidean covariant Green functions. This formulation of relativistic quantum
mechanics has the advantage that all calculations can be performed using
Euclidean variables. The construction of the Hilbert space inner product
requires that the Green functions are reflection positive, which is a
non-trivial constraint on the dynamics. In this paper I discuss the structure
of reflection positive Green functions. I show that scattering wave operators
exist when the dynamics is given by a Green function with the structure
discussed in this work. Techniques for computing scattering observables in this
Euclidean framework are discussed.

32
The categories of this paper are: atom-ph
23
The categories of this paper are: solv-int
16
The categories of this paper are: stat
8
The categories of this paper are: hep-ex
20
The categories of this paper are: acc-phys
28
The categories of this paper are: alg-geom
3
The categories of this paper are: physics
11
The categories of this paper are: hep-lat
35
The categories of this paper are: mtrl-th
15
The categories of this paper are: nucl-ex
10
The categories of this paper are: q-bio
25
The categories of this paper are: patt-sol
33
The categories of this paper are: plasm-ph
30
The categories of this paper are: q-alg
1
The categories of this paper are: cs
36
The categories of this paper are: cmp-lg