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Dynamically induced topology and quantum monodromies in a proximity quenched gapless wire

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Seradjeh,  Babak
Max Planck Institute for the Physics of Complex Systems, Max Planck Society;

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1908.06111.pdf
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Citation

Dahan, D., Grosfeld, E., & Seradjeh, B. (2020). Dynamically induced topology and quantum monodromies in a proximity quenched gapless wire. Physical Review B, 102(12): 125142. doi:10.1103/PhysRevB.102.125142.


Cite as: http://hdl.handle.net/21.11116/0000-0007-D279-4
Abstract
We study the quench dynamics of a topologically trivial one-dimensional gapless wire following its sudden coupling to topological bound states. We find that as the bound states leak into and propagate through the wire, signatures of their topological nature survive and remain measurable over a long lifetime. Thus, the quench dynamically induces topological properties in the gapless wire. Specifically, we study a gapless wire coupled to fractionally charged solitons or Majorana fermions, and we characterize the dynamically induced topology in the wire, in the presence of coupling to the bath, disorder, and short-range interactions, by analytical and numerical calculations of the dynamics of fractional charge, fermion parity, entanglement entropy, and fractional exchange statistics. In a dual effective description, this phenomenon is described by correlators of boundary changing operators, which, remarkably, generate topologically nontrivial monodromies in the gapless wire, both for Abelian and non-Abelian quantum statistics of the bound states.