Nonlinear characterizations of scalar particle interactions with black holes

There is currently no theory of quantum gravity; however, we do know that particles must interact with black holes. Generating robust descriptions of how wave packets may interact with black holes is an essential step towards advancing our understanding of how fields may act in regions of extreme gravity. The recent advancement of numerical relativity techniques presents a unique opportunity to explore the fully-nonlinear strong-field regime in ways which were previously inaccessible. We have developed new software, as an extension of GABERel, which has the capability to explore particle physics in an extreme gravitational field by studying the evolution and interaction of nonlinear scalar fields, initialized as semi-classical wave packets, on top of a black hole background. In this talk, I will present preliminary results from GABErel which show the interaction between a massless scalar particle and a black hole, using the BSSN formalism.