Stabilizing the false vacuum. Mott skyrmions
Abstract
Topological excitations keep fascinating physicists since many decades. While individual vortices and solitons emerge and have been observed in many areas of physics, their most intriguing higher dimensional topological relatives, skyrmions (smooth, topologically stable textures) and magnetic monopoles emerging almost necessarily in any grand unified theory and responsible for charge quantization remained mostly elusive. Here we propose that loading a threecomponent nematic superfluid such as ^{23}Na into a deep optical lattice and thereby creating an insulating core, one can create topologically stable skyrmion textures. The skyrmion’s extreme stability and its compact geometry enable one to investigate the skyrmion’s structure, and the interplay of topology and excitations in detail. In particular, the superfluid’s excitation spectrum as well as the quantum numbers are demonstrated to change dramatically due to the skyrmion, and reflect the presence of a trapped monopole, as imposed by the skyrmion’s topology.
 Authors:
 Budapest, Univ. of Technology and Economics and MTABME Condensed Matter Research Group, Budapest (Hungary); Harvard Univ., Cambridge, MA (United States)
 Budapest, Univ. of Technology and Economics and MTABME Condensed Matter Research Group, Budapest (Hungary)
 Harvard Univ., Cambridge, MA (United States)
 Publication Date:
 Research Org.:
 Krell Institute, Ames, IA (United States)
 Sponsoring Org.:
 USDOE; Hungarian Scientific Research Funds, Budapest (Hungary); Hungarian Academy of Sciences, Budapest (Hungary)
 OSTI Identifier:
 1204501
 Grant/Contract Number:
 FG0297ER25308; K101244; K105149; CNK80991
 Resource Type:
 Journal Article: Accepted Manuscript
 Journal Name:
 Scientific Reports
 Additional Journal Information:
 Journal Volume: 5; Journal ID: ISSN 20452322
 Publisher:
 Nature Publishing Group
 Country of Publication:
 United States
 Language:
 English
 Subject:
 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Quantum fluids and solids; ultracold gases
Citation Formats
KanászNagy, M., Dóra, B., Demler, E. A., and Zaránd, G.. Stabilizing the false vacuum. Mott skyrmions. United States: N. p., 2015.
Web. doi:10.1038/srep07692.
KanászNagy, M., Dóra, B., Demler, E. A., & Zaránd, G.. Stabilizing the false vacuum. Mott skyrmions. United States. doi:10.1038/srep07692.
KanászNagy, M., Dóra, B., Demler, E. A., and Zaránd, G.. 2015.
"Stabilizing the false vacuum. Mott skyrmions". United States.
doi:10.1038/srep07692. https://www.osti.gov/servlets/purl/1204501.
@article{osti_1204501,
title = {Stabilizing the false vacuum. Mott skyrmions},
author = {KanászNagy, M. and Dóra, B. and Demler, E. A. and Zaránd, G.},
abstractNote = {Topological excitations keep fascinating physicists since many decades. While individual vortices and solitons emerge and have been observed in many areas of physics, their most intriguing higher dimensional topological relatives, skyrmions (smooth, topologically stable textures) and magnetic monopoles emerging almost necessarily in any grand unified theory and responsible for charge quantization remained mostly elusive. Here we propose that loading a threecomponent nematic superfluid such as 23Na into a deep optical lattice and thereby creating an insulating core, one can create topologically stable skyrmion textures. The skyrmion’s extreme stability and its compact geometry enable one to investigate the skyrmion’s structure, and the interplay of topology and excitations in detail. In particular, the superfluid’s excitation spectrum as well as the quantum numbers are demonstrated to change dramatically due to the skyrmion, and reflect the presence of a trapped monopole, as imposed by the skyrmion’s topology.},
doi = {10.1038/srep07692},
journal = {Scientific Reports},
number = ,
volume = 5,
place = {United States},
year = 2015,
month = 1
}
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