Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Two-Beam Spin Noise Spectroscopy   We propose a method of two-beam spin noise spectroscopy to test the spin
transport at equilibrium via analysis of correlations between time-shifted spin
fluctuations at different space locations. This method allows one to determine
the strength of spin-orbit interaction and spin relaxation time and separate
spin noise of conducting electrons from the background noise of localized
electrons. We formulate a theory of two-beam spin noise spectroscopy in
semiconductor wires with Bychkov-Rashba spin-orbit interaction taking into
account several possible spin relaxation channels and finite size of laser
beams. Our theory predicts a peak shift with respect to the Larmor frequency to
higher or lower frequencies depending on the strength of spin orbit interaction
and distance between the beams. The two-beam spin noise spectroscopy could find
applications in experimental studies of semiconductors, emergent materials and
many other systems.

8
The categories of this paper are: hep-ex
24
The categories of this paper are: dg-ga
1
The categories of this paper are: cs
37
The categories of this paper are: supr-con
2
The categories of this paper are: math
3
The categories of this paper are: physics
34
The categories of this paper are: chem-ph
22
The categories of this paper are: chao-dyn
13
The categories of this paper are: quant-ph
14
The categories of this paper are: math-ph
30
The categories of this paper are: q-alg
12
The categories of this paper are: nucl-th
36
The categories of this paper are: cmp-lg
11
The categories of this paper are: hep-lat
33
The categories of this paper are: plasm-ph
6
The categories of this paper are: astro-ph