Scale dependence of short-range correlations with the in-medium similarity renormalization group

In recent years, the nuclear physics community has made a considerable effort to understand the nature of the short-range correlation (SRC) scaling factor $a_2$. Even though SRCs are a property of the nuclear wave function and are thus non-observable, recent theoretical work suggests that the ratio of SRCs between two nuclei is both scale and scheme independent. This ratio, denoted by $a_2$, has been obtained experimentally for nuclei ranging from the deuteron to $^{197}$Au, but has only been computed for very light nuclei thus far. In this work, we have employed the in-medium similarity renormalization group (IMSRG) as a means to compute $a_2$ for intermediate mass nuclei, allowing us to test the supposed observable nature of $a_2$ for a wide range of systems. In order to obtain accurate descriptions, we explore infrared extrapolations in quantities relevant to $a_2$. These explorations can help shed light on the convergence features of many nuclear physics quantities computable with modern many-body methods.