Phase transitions of S=1 spinor condensates in an optical lattice
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We study the phase diagram of spin-one polar condensates in a two-dimensional optical lattice with magnetic anisotropy. We show that the topological binding of vorticity to nematic disclinations allows for a rich variety of phase transitions. These include Kosterlitz-Thouless-like transitions with a superfluid stiffness jump that can be experimentally tuned to take a continuous set of values, and a cascaded Kosterlitz-Thouless transition, characterized by two divergent length scales. For higher integer spin bosons S, the thermal phase transition out of the planar polar phase is strongly affected by the parity of S. © 2009 The American Physical Society.
Published Version (Please cite this version)10.1103/PhysRevB.80.214513
Publication InfoPodolsky, D; Chandrasekharan, S; & Vishwanath, A (2009). Phase transitions of S=1 spinor condensates in an optical lattice. Physical Review B - Condensed Matter and Materials Physics, 80(21). pp. 214513. 10.1103/PhysRevB.80.214513. Retrieved from https://hdl.handle.net/10161/3298.
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Professor of Physics
Prof. Chandrasekharan is interested in understanding quantum field theories non-perturbatively from first principles calculations. His research focuses on lattice formulations of these theories with emphasis on strongly correlated fermionic systems of interest in condensed matter, particle and nuclear physics. He develops novel Monte-Carlo algorithms to study these problems. He is particularly excited about solutions to the notoriously difficult <a href="http://en.wikipedia.org/wiki/Numerical_si