Physics

Recently a new and rather unexpected connection between condensed matter physics and algebraic topology has been noted. Namely, it appears that phases of matter with an energy gap, no long-range entanglement, and fixed symmetry can be classified...

Large-scale magnetic fields exist in cosmic structures such as galaxies and galaxy clusters. Moreover, recent gamma ray observations have suggested the existence of magnetic fields even in void regions. In this talk I will explain how such large...

This talk is based on my recent publication on Physical Review Letters in July 2014. http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.113.051801