Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spontaneous Emission from a Fractal Vacuum   Spontaneous emission of a quantum emitter coupled to a QED vacuum with a
deterministic fractal structure of its spectrum is considered. We show that the
decay probability does not follow a Wigner-Weisskopf exponential decrease but
rather an overall power law behavior with a rich oscillatory structure, both
depending on the local fractal properties of the vacuum spectrum. These results
are obtained by giving first a general perturbative derivation for short times.
Then we propose a simplified model which retains the main features of a fractal
spectrum to establish analytic expressions valid for all time scales. Finally,
we discuss the case of a Fibonacci cavity and its experimental relevance to
observe these results.

18
The categories of this paper are: econ
15
The categories of this paper are: nucl-ex
7
The categories of this paper are: hep-th
37
The categories of this paper are: supr-con
19
The categories of this paper are: eess
27
The categories of this paper are: comp-gas
21
The categories of this paper are: adap-org
6
The categories of this paper are: astro-ph
32
The categories of this paper are: atom-ph
10
The categories of this paper are: q-bio
20
The categories of this paper are: acc-phys
1
The categories of this paper are: cs
11
The categories of this paper are: hep-lat
25
The categories of this paper are: patt-sol
23
The categories of this paper are: solv-int
34
The categories of this paper are: chem-ph