Why correlated effective field theory uncertainties matter: nuclear symmetry energy

In this talk, I report on the BUQEYE collaboration's [1] recent statistical analysis of correlated truncation errors in the nuclear-matter equation of state (EOS) derived from chiral effective field theory (EFT) [2,3]. Gaussian Processes with physics-based hyperparameters allow us to efficiently quantify and propagate theoretical uncertainties of the EOS to derived quantities. Specifically, I will discuss the nuclear symmetry energy to emphasize the importance of correlations between different densities and observables for robust uncertainty quantification of the EOS. \begin{itemize} \item[1)] https://buqeye.github.io/ \item[2)] Drischler, Furnstahl, Melendez, and Phillips, arXiv:2004.07232 \item[3)] Drischler, Melendez, Furnstahl, and Phillips, arXiv:2004.07805 \end{itemize}