Manifestations of String Theory in Astrophysical Data and at the LHC

Abstract

With the advent of the LHC and the continuing influx of cosmological data, phenomenological aspects of string theory have received renewed attention in recent years and many problems have been properly incorporated in this framework. In this Dissertation, we suggest new string-related candidates for the origin of dark energy and dark matter and propose ways of searching for string resonances at the LHC.