Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Measurement of the forbidden tensor polarizability of Cs using an
  all-optical Ramsey resonance technique   We have measured the strongly suppressed electric tensor polarizability of
the Cs ground state using an optical pump-probe technique in a thermal atomic
beam. The result agrees with a previous measurement and confirms the
long-standing discrepancy with a theoretical value. The anticipated future
reduction of the total uncertainty to the 1% level makes this quantity a
valuable test for atomic structure calculations involving short-range
inner-atomic interactions.

7
The categories of this paper are: hep-th
22
The categories of this paper are: chao-dyn
31
The categories of this paper are: ao-sci
5
The categories of this paper are: gr-qc
20
The categories of this paper are: acc-phys
33
The categories of this paper are: plasm-ph
27
The categories of this paper are: comp-gas
13
The categories of this paper are: quant-ph
19
The categories of this paper are: eess
30
The categories of this paper are: q-alg
32
The categories of this paper are: atom-ph
23
The categories of this paper are: solv-int
21
The categories of this paper are: adap-org
24
The categories of this paper are: dg-ga
11
The categories of this paper are: hep-lat
16
The categories of this paper are: stat