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Setting Limits on Supersymmetry Using Simplified Models
Published on: November 15, 2013
Effective lagrangian and topological interactions in supersolids
1Institute for Nuclear Theory, University of Washington, Seattle, Washington 98195-1550, USA.
Abstract:
We construct a low-energy effective Lagrangian describing zero temperature supersolids. Galilean invariance imposes strict constraints on the form of the effective Lagrangian. We identify a topological term in the Lagrangian that couples superfluid and crystalline modes. For small superfluid fractions, this interaction term is dominant in problems involving defects. As an illustration, we compute the differential cross section of scatterings of low-energy transverse elastic phonons by a superfluid vortex. The result is model independent.
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