Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Seeking better times: atomic clocks in the generalized Tonks-Girardeau
  regime   This article is based on the talk with the same title at the Blaubeuren
meeting. First we discuss briefly the importance of time and time keeping,
explaining the basic functioning of clocks in general and atomic clocks in
particular, which rely on Ramsey interferometry. The usefulness of cold atoms
is discussed as well as their limits in Bose-Einstein condensates. An
alternative that we study is a different cold-atom regime: the Tonks-Girardeau
(TG) gas of tightly confined and strongly interacting bosons. The TG gas is
reviewed and then generalized for two-level atoms. Finally, we explore the
combination of Ramsey interferometry and TG gases.

32
The categories of this paper are: atom-ph
14
The categories of this paper are: math-ph
30
The categories of this paper are: q-alg
16
The categories of this paper are: stat
8
The categories of this paper are: hep-ex
1
The categories of this paper are: cs
19
The categories of this paper are: eess
22
The categories of this paper are: chao-dyn
23
The categories of this paper are: solv-int
6
The categories of this paper are: astro-ph
37
The categories of this paper are: supr-con
33
The categories of this paper are: plasm-ph
17
The categories of this paper are: q-fin
9
The categories of this paper are: nlin
24
The categories of this paper are: dg-ga
20
The categories of this paper are: acc-phys