Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Ramsey's Method of Separated Oscillating Fields and its Application to
  Gravitationally Induced Quantum Phaseshifts   We propose to apply Ramsey's method of separated oscillating fields to the
spectroscopy of the quantum states in the gravity potential above a vertical
mirror. This method allows a precise measurement of quantum mechanical
phaseshifts of a Schr\"odinger wave packet bouncing off a hard surface in the
gravitational field of the earth. Measurements with ultra-cold neutrons will
offer a sensitivity to Newton's law or hypothetical short-ranged interactions,
which is about 21 orders of magnitude below the energy scale of
electromagnetism.

24
The categories of this paper are: dg-ga
4
The categories of this paper are: cond-mat
18
The categories of this paper are: econ
25
The categories of this paper are: patt-sol
28
The categories of this paper are: alg-geom
31
The categories of this paper are: ao-sci
17
The categories of this paper are: q-fin
2
The categories of this paper are: math
35
The categories of this paper are: mtrl-th
21
The categories of this paper are: adap-org
37
The categories of this paper are: supr-con
33
The categories of this paper are: plasm-ph
16
The categories of this paper are: stat
29
The categories of this paper are: funct-an
10
The categories of this paper are: q-bio
7
The categories of this paper are: hep-th