#### Shamit Kachru

##### Professor of Physics

**Bio**How can we use quantum field theory and string theory to understand key questions in high energy theory, cosmology, and condensed matter physics? Do the hints of deep mathematical structures underlying string theory contain new lessons for fundamental physics?

Professor Kachru is widely interested in the foundational theoritical questions underlying cosmology, condensed matter theory, particle theory, and quantum gravity. These include the nature of the initial cosmological singularity; the microscopic theory of inflation; field theory and string theory models of strongly correlated condensed matter systems; and possible solutions of the hierarchy problem (with implications for beyond-the-Standard-Model physics). He also has an abiding interest in the mathematical structure underlying string theory and string compactifications.

Current areas of focus:

- Study of the mathematics underlying BPS states and black holes in string theory, including connections to (mock) modular forms and number theory.

- Application of techniques of modern quantum field theory (including dualities) to develop a controlled understanding of novel phases of condensed matter systems.