Associate Professor

Martin Fisher School of Physics

Brandeis University

E-mail: `mph(at)brandeis.edu`

My Brandeis Physics Department page

My Brandeis University page

Office: Abelson 313

Office hours: Tuesday, 3:00 - 3:45pm

I am a member of the Brandeis High-Energy and Gravitational Theory Group. My research spans a variety of areas of theoretical and mathematical physics, including string theory, quantum field theory, quantum gravity, general relativity, geometry, quantum information theory, statistical mechanics, and convex optimization. Recently, the main focus of my work has been on the use of concepts and tools from quantum information theory, such as entanglement entropies, to better understand field theories, gravitational theories, and holographic dualities connecting them.

My work is supported by a grant from the U.S. Department of Energy and by *It from Qubit: Simons Collaboration on Quantum Fields, Gravity, and Information*, a multi-institution grant from the Simons Foundation of which I serve as Deputy Director.

We are always looking for talented graduate students to join our group. If you are interested, please apply to our Ph.D. program. (I read applications only through the university's admissions process; please do not send your CV or other application materials directly to me.)

During the spring semester of 2019, I am teaching Physics 202: Quantum Field Theory.

More about me and my work:

Slides and videos from some talks I've given recently:

*Quantum entanglement and the geometry of spacetime*, colloquium, 2018: slides*Holographic entanglement entropy*, PiTP, 2018: lecture notes & videos*Bit threads and holographic monogamy*, conference talk, 2018: slides*Flow-cut theorems and covariant bit threads*, seminar, 2017: slides*Bit threads and holographic entanglement*, Frontiers of Quantum Information Physics, KITP, 2017: slides & video*Lectures on entanglement in field theory and holography*, TASI, 2017: lecture notes; videos*Quantum entanglement, classical gravity, and convex programming: New connections*, Harvard Center for Mathematical Sciences and Applications Colloquium, 2017: slide

Also perhaps of interest:

- A popular-level article about holographic entanglement entropy I wrote for the newsletter of the International Centre for Theoretical Sciences, Bangalore (turn to page 4)
- A 5-minute podcast on the holographic principle
- My page of useful
*Mathematica*packages - A compendium of useful formulas, mostly lifted from various textbooks such as Wald's
*General Relativity*and Polchinski's*String Theory*, together with a few of my own shallow insights