Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Using stochastic acceleration to place experimental limits on the charge
  of antihydrogen   Assuming hydrogen is charge neutral, CPT invariance demands that antihydrogen
also be charge neutral. Quantum anomaly cancellation also demands that
antihydrogen be charge neutral. Standard techniques based on measurements of
macroscopic quantities of atoms cannot be used to measure the charge of
antihydrogen. In this paper, we describe how the application of randomly
oscillating electric fields to a sample of trapped antihydrogen atoms, a form
of stochastic acceleration, can be used to place experimental limits on this
charge.

10
The categories of this paper are: q-bio
17
The categories of this paper are: q-fin
8
The categories of this paper are: hep-ex
0
The categories of this paper are: hep-ph
35
The categories of this paper are: mtrl-th
13
The categories of this paper are: quant-ph
18
The categories of this paper are: econ
1
The categories of this paper are: cs
15
The categories of this paper are: nucl-ex
4
The categories of this paper are: cond-mat
27
The categories of this paper are: comp-gas
34
The categories of this paper are: chem-ph
28
The categories of this paper are: alg-geom
5
The categories of this paper are: gr-qc
29
The categories of this paper are: funct-an
21
The categories of this paper are: adap-org