Connections between mathematics and physics have been a source of great progress in each area. Recently, new connections have emerged between automorphic objects in number theory and parts of physics, including string theory and the statistical models of crystals. This workshop is meant to serve as an introduction to these areas and these connections. It includes lecture series on topics that are foundational for the overall theme, including automorphic forms, automorphic representations, mock modular forms, string scattering amplitudes and connections between the Langlands program and physics. The workshop is intended for researchers in number theory and physics, including graduate students and postdocs in these areas, who wish to learn more about these new connections.