CAREER: Strings on the Horizon: Exploring the Interface of High Energy Physics and Cosmology

New York University, New York NY

Investigators

Abstract

New data from cosmology have determined many parameters of our uni- verse to unprecedented accuracy. Among the many significant results is the determination that much of the energy in the universe is dark and of a form consistent with a positive cosmological constant. Understanding such a result appears to require a theory of quantum gravity. The best candidate for such a theory, string theory, contains a mechanism for producing dark energy and understanding its approximate value, but it is crucial that this model be falsifiable and predictive. The PI proposes to undertake a broad program of research in high energy theory, focusing on the aspects of string theory most relevant to cosmology, with the ultimate goal of uncovering stringy effects which can be observed. He will continue his work studying the effects of high-scale physics and string theory on large-scale cosmological phenomena such as the Cosmic Microwave Background and the curvature of the universe. He will research the physics of black hole and cosmological horizons and singularities using string theory dualities and other methods. As a final component of the program he will continue and extend his recent work in particle physics in anticipation of the arrival of new data. The Broader Impact of the proposal will be that the PI will develop a pilot program at NYU to help promote the success of undergraduates belonging to groups traditionally underrepresented in physics and the physical sciences. The program will attempt to overcome the isolation such students often experience by facilitating the formation of a peer group and by providing additional support where necessary. In addition, the PI will lecture at the Physics Club of New York, a public forum consisting of area high school teachers and members of the public, and will participate in school tours and interactions with two particular local high schools.