Abstract:

In this talk I will discuss the critical properties of spin-1 polar spinorcondensates.  I will focus on two spatial dimensions at finitetemperatures.  Here, the topological binding of vorticity to nematic disclinations leadsto a rich phase diagram.  The physics is captured by a U(1) version of thecelebrated Ashkin-Teller model. In particular, I will discuss a novel"cascaded" Kosterlitz-Thouless critical point, characterized by twodiverging scales and a non-universal superfluid stiffness jump. I willalso present Monte Carlo simulations to support these results.

Toronto Quantum Matter Seminars
Event series  Condensed Matter EventsToronto Quantum Matter Seminars