In recent years I've been following three threads of developments:

1. Applications of string theory, as a model of strongly coupled quantum field theories, to the physics of QCD and of condensed matter systems.

2. Foundations of string Theory: Matrix Theory, AdS/CFT, black hole physics, time dependence in string theory.

3. Helicity amplitudes.

My research has also benefitted increasingly from the use of numerical simulations, mostly to solve systems of non-linear partial differential equations resulting from the study of Einstein equations in context relevant to holography.

I am also maintaining an interesting in statistical inference, machine learning and deep neural networks, hopefully with some applications to physics.

More detailed information can be found in my list of publications.

**Coordinates **: Hennings building, room 412, phone number 604- 822-3581.

**Teaching: ** Fall -- Physics 170, Spring -- Physics 508 (Quantum Field Theory)

**Travel Schedule**: March 16-20 (Santa Barbara).

- New Preprints
- InSpire Database UBC Physics and Astronomy
- PITP (Pacific Institute for Theoretical Physics)
- PIMS (Pacific Institute for the Mathematical Sciences)
- NSERC
- APCTP (Asia Pacific Center for Theoretical physics)

- Aspen Center for Physics
- The Perimeter Institute
- Rutgers NHETC
- IAS Princeton
- University of Washington
- University of Texas at Austin
- KITP Santa Barbara
- ITP Stanford
- KIAS (Korean Institute for Advanced Science, Seoul)
- Weizmann Institute, Israel