CAREER: Topics in String Compactifications
Per Berglund, Assistant Professor
Physics Department
University of New Hampshire
String theory has emerged as a leading candidate for a quantum theory of gravity, i.e., a theory that encompasses both quantum mechanics and Einstein's theory of general relativity. A remaining challenge is the identification of the appropriate set of background conditions relevant to the formation of our universe, i.e., compactifying the ten dimensional string theory (or eleven-dimensional M theory/supergravity) can lead to a very large number of (non-)supersymmetric four dimensional vacua.
The projects outlined in this research address two important aspects of string compactifications. On one hand, Berglund will study how in the context of flux compactifications one can find vacua which exhibit Standard Model like spectra. He will also use constraints from cosmology, such as the cosmic microwave background, to put restrictions on the inflationary type potentials obtained from string theory. The second approach will be made in studying black hole physics in terms of four- and five-dimensional supersymmetric solutions of string theory. This will provide important information in trying to understand the black hole information puzzle.
This proposal is very timely since, during the course of the next few years, the Large Hadron Collider (LHC) at CERN will start operating, which will provide interesting information of what occurs beyond the Standard Model. Furthermore, more accurate observations of the cosmic microwave background using the PLANCK satellite, will provide even tighter constraints on the possible inflationary scenarios arising in string theory.
The goal of the project outlined in this proposal is two-fold: (1) facilitate the continuation and expansion of a research program in theoretical particle physics, with emphasis on string theory, at the University of New Hampshire (UNH), and (2) develop a strong outreach program taking the frontiers of particle physics into local high schools, that nurtures the excitement young people have for science in general, while promoting physics in particular. Results from the proposed work will be of interest to several sectors of the mathematics and physics community. Thus, this project will foster collaborations and intellectual exchange between UNH physicists and mathematicians and those from neighboring, as well as national and international, institutions. The program will capitalize on the existing infrastructure at the University of New Hampshire for interactions with high schools and bring cutting-edge science into local high schools.
Specifically, Berglund will work with the NSF supported Partnerships for Research Opportunities to Benefit Education (PROBE) program to organize workshops at UNH for high school teachers and to visit local high schools. Such interactions will range from seminars, pedagogical activities, and informal question-answer sessions with both teachers and students. Interested high schools and teachers will be encouraged to visit UNH to learn about research in theoretical particle physics and, when suitable, to attend activities (e.g., colloquia) designed for wide audiences. Berglund will also take part in a summer program for high school students at UNH (Project SMART- Science and Mathematics Achievement through Research Training) and develop lectures and activities in Particle Physics and Cosmology for these participating high school students.