Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Computational Studies of Light Shift in Raman-Ramsey Interference-Based
  Atomic Clock   Determining light shift in Raman-Ramsey interference is important for the
development of atomic frequency standards based on a vapor cell. We have
accurately calculated light shift in Raman-Ramsey interference using the
density-matrix equations for a three-level system without invoking the
adiabatic approximation. Specifically, phase shifts associated with coherent
density-matrix terms are studied as they are relevant to the detection of
Raman-Ramsey interference in transmission (or absorption) through the medium.
For the single-velocity case, the numerically computed results are compared
with the analytical results obtained using the adiabatic approximation. The
result shows light shift suppression in conformity with the closed-form
analytic solutions. The computational studies have also been extended to
investigate Raman-Ramsey interference for a Doppler-broadened vapor medium.
Importantly, a velocity-induced frequency shift is found at the fringe center
as an additional source of frequency error for a vapor cell Raman clock.

35
The categories of this paper are: mtrl-th
11
The categories of this paper are: hep-lat
0
The categories of this paper are: hep-ph
20
The categories of this paper are: acc-phys
25
The categories of this paper are: patt-sol
1
The categories of this paper are: cs
14
The categories of this paper are: math-ph
33
The categories of this paper are: plasm-ph
31
The categories of this paper are: ao-sci
27
The categories of this paper are: comp-gas
30
The categories of this paper are: q-alg
6
The categories of this paper are: astro-ph
7
The categories of this paper are: hep-th
9
The categories of this paper are: nlin
32
The categories of this paper are: atom-ph
22
The categories of this paper are: chao-dyn