AUTHOR=Della Morte Michele , Sannino Francesco TITLE=Renormalization Group Approach to Pandemics as a Time-Dependent SIR Model JOURNAL=Frontiers in Physics VOLUME=8 YEAR=2021 URL=https://www.frontiersin.org/journals/physics/articles/10.3389/fphy.2020.591876 DOI=10.3389/fphy.2020.591876 ISSN=2296-424X ABSTRACT=

We generalise the epidemic Renormalization 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 cumulative number of infected cases.