Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Renormalisation Group approach to pandemics as a time-dependent SIR
  model   We generalise the epidemic Renormalisation Group framework while connecting
it to a SIR model with time-dependent coefficients. We then confront the model
with COVID-19 in Denmark, Germany, Italy and France and show that the approach
works rather well in reproducing the data. We also show that a better
understanding of the time dependence of the recovery rate would require
extending the model to take into account the number of deaths whenever these
are over 15% of the total number of infected cases.

12
The categories of this paper are: nucl-th
29
The categories of this paper are: funct-an
22
The categories of this paper are: chao-dyn
36
The categories of this paper are: cmp-lg
31
The categories of this paper are: ao-sci
0
The categories of this paper are: hep-ph
34
The categories of this paper are: chem-ph
9
The categories of this paper are: nlin
33
The categories of this paper are: plasm-ph
25
The categories of this paper are: patt-sol
14
The categories of this paper are: math-ph
28
The categories of this paper are: alg-geom
6
The categories of this paper are: astro-ph
27
The categories of this paper are: comp-gas
5
The categories of this paper are: gr-qc
16
The categories of this paper are: stat