Associate Professor

Martin Fisher School of Physics

Brandeis University

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

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, and statistical mechanics. 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 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 2018, I am teaching Physics 162b: Quantum Mechanics II.

More about me and my work:

- My C.V. (including a list of my publications)
- My publications on arXiv and Inspire
- My Brandeis Physics Department page
- A two-page description of my recent research
- A few popular-level blog posts about my work: ReAction, BrandeisNow, Brandeis Science Blog, Brandeis Science Blog

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

*Flow-cut theorems and covariant bit threads*, seminar, 2017: slides*Quantum entanglement and the geometry of spacetime*, colloquium, 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: handwritten lecture notes*Quantum entanglement, classical gravity, and convex programming: New connections*, Harvard Center for Mathematical Sciences and Applications Colloquium, 2017: slide*Entanglement entropy, quantum field theory, and holography*, U.S.-India Advanced Studies Institute: Classical And Quantum Information, ICTS Bangalore, 2017: videos: lecture 1, lecture 2, lecture 3

Also perhaps of interest:

- 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 - a brief semi-popular introduction to tachyons in modern physics