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SUMMARY:New topological phases in the Kitaev model as a function of magnet
ic field
DTSTART;VALUE=DATE-TIME:20220517T180000Z
DTEND;VALUE=DATE-TIME:20220517T184500Z
DTSTAMP;VALUE=DATE-TIME:20221004T170018Z
UID:indico-contribution-172@events.perimeterinstitute.ca
DESCRIPTION:Speakers: Nandini Trivedi (Ohio State University)\n"The Kitaev
model with anisotropic interactions on the bonds of a honeycomb lattice i
s a paradigmatic model for quantum spin liquids. Despite the simplicity of
the model\, a rich phase diagram with gapless and gapped quantum spin liq
uid phases\, with abelian and non-abelian excitations\, are revealed as a
function of a magnetic field and bond couplings. Our results of the entang
lement entropy\, topological entanglement entropy\, and the dynamical spin
excitation spectrum\, are obtained using exact diagonalization and densit
y matrix renormalization group (DMRG) methods. We provide insights into t
he phases from the underlying effective field theories. \n\nIn collaborat
ion with Shi Feng\, Cullen Gantenberg\, Adhip Agarwala\, Subhro Bhattachar
jee \n\n[1] Signatures of magnetic-field-driven quantum phase transitions
in the entanglement entropy and spin dynamics of the Kitaev honeycomb mode
l\, David C. Ronquillo\, Adu Vengal\, Nandini Trivedi\, Phys. Rev. B 99\,
140413 (2019) \n\n[2] Magnetic field induced intermediate quantum spin-liq
uid with a spinon Fermi surface\, Niravkumar D. Patel and Nandini Trivedi\
, Proceedings of the National Academy of Sciences 116\, 12199 (2019). \n\n
[3] Two-Magnon Bound States in the Kitaev Model in a [111]-Field\, Subhasr
ee Pradhan\, Niravkumar D. Patel\, Nandini Trivedi\, Phys. Rev. B 101\, 18
0401 (2020) \n\n[4] Symmetry Analysis of Tensors in the Honeycomb Lattice
of Edge-Sharing Octahedra\, Franz G. Utermohlen\, Nandini Trivedi\, Phys.
Rev. B 103\, 155124 (2021) "\n\nhttps://events.perimeterinstitute.ca/event
/11/contributions/172/
LOCATION:
URL:https://events.perimeterinstitute.ca/event/11/contributions/172/
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