Boundary central charge from bulk odd viscosity - chiral superfluids

TYPETheor./Math. Physics Seminar
Speaker:Omri Golan
Organizer:Itai Arad
Time:14:30 - 15:30
Location:Lidow Nathan Rosen (300)

I will describe a low energy effective field theory for chiral superfluids, which accounts for both spontaneous symmetry breaking and fermionic ground-state topology. The theory enables us to compute the odd (or Hall) viscosity tensor at small wave-vector, which contains a dependence on the chiral central charge c of the boundary degrees of freedom, as well as additional non-universal contributions. The theory also leads to related bulk observables which allow for a bulk measurement of c . In Galilean invariant superfluids, only the particle current and density responses to strain and electromagnetic fields are required. 


Time permitting, I will go higher up in energy, and describe the massive Higgs field of the p-wave superfluid/superconductor as an unusual graviton


Based on PRB 98.064503 and arXiv 1902.10725