On the impact of nonlocal gravity on compact stars

We study the impact of nonlocal modifications of General Relativity on stellar structure. In particular, assuming an analytic distortion function and specific equations of state, we made use of remnant stars to put qualitative constraints on a parameter not directly restricted by solar system tests. Using current data sets available for white dwarfs and strange quark stars candidates, we find that the most stringent bounds come from the objects displaying the highest core densities, namely strange quark stars. Specifically, the constraints obtained from this class of stars are three to four orders of magnitude tighter than those obtained using white dwarfs.

Automated summary

In this study, we investigated the impact of nonlocal modifications of General Relativity on stellar structure. By using remnant stars, we were able to put qualitative constraints on a parameter that was not directly restricted by solar system tests. Our analysis of white dwarfs and strange quark stars candidates showed that the most stringent constraints come from strange quark stars, with three to four orders of magnitude tighter boundaries compared to white dwarfs.