Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Efimov States of Strongly Interacting Photons   We demonstrate the emergence of universal Efimov physics for interacting
photons in cold gases of Rydberg atoms. We consider the behavior of three
photons injected into the gas in their propagating frame, where a paraxial
approximation allows us to consider them as massive particles. In contrast to
atoms and nuclei, the photons have a large anisotropy between their
longitudinal mass, arising from dispersion, and their transverse mass, arising
from diffraction. Nevertheless, we show that in suitably rescaled coordinates
the effective interactions become dominated by s-wave scattering near threshold
and, as a result, give rise to an Efimov effect near unitarity. We show that
the three-body loss of these Efimov trimers can be strongly suppressed and
determine conditions under which these states are observable in current
experiments. These effects can be naturally extended to probe few-body
universality beyond three bodies, as well as the role of Efimov physics in the
non-equilbrium, many-body regime.

28
The categories of this paper are: alg-geom
29
The categories of this paper are: funct-an
33
The categories of this paper are: plasm-ph
35
The categories of this paper are: mtrl-th
22
The categories of this paper are: chao-dyn
34
The categories of this paper are: chem-ph
7
The categories of this paper are: hep-th
6
The categories of this paper are: astro-ph
27
The categories of this paper are: comp-gas
30
The categories of this paper are: q-alg
18
The categories of this paper are: econ
32
The categories of this paper are: atom-ph
9
The categories of this paper are: nlin
0
The categories of this paper are: hep-ph
14
The categories of this paper are: math-ph
1
The categories of this paper are: cs