Pantheon SEMPARIS Le serveur des séminaires parisiens Paris

Status Confirmed
Seminar Series RENC-THEO
Subjects hep-th
Date Thursday 19 October 2017
Time 10:00
Institute IHP
Seminar Room 314
Speaker's Last Name Jokela
Speaker's First Name Niko
Speaker's Email Address
Speaker's Institution University of Helsinki
Title Holographic pinning in probe-brane models
Abstract In a holographic probe-brane model exhibiting a spontaneously spatially modulated CDW+SDW ground state, I will introduce explicit sources of symmetry breaking in the form of ionic and antiferromagnetic lattices. I will demonstrate pinning, in which the translational Goldstone mode is lifted by the introduction of explicit sources of translational symmetry breaking. The numerically computed optical conductivity fits very well to a Drude-Lorentz model with a small residual metallicity, precisely matching analytic formulas for the DC conductivity. I also demonstrate an instability of the striped phase in the presence of a large-amplitude ionic lattice.
arXiv Preprint Number

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