Spectroscopy of Spinons in Coulomb Quantum Spin Liquids
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PhysRevLett.124.097204.pdf
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Author(s)
Morampudi, Siddhardh C.
Wilczek, Frank
Laumann, Chris R.
Date Issued
March 2020
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Morampudi, Siddhardh C., Wilczek, Frank, and Laumann, Chris R. "Spectroscopy of Spinons in Coulomb Quantum Spin Liquids." Physical Review Letters 124, 9 (March 2020): 097204 © 2020 American Physical Society
Version
Final published version
Abstract
We calculate the effect of the emergent photon on threshold production of spinons in U(1) Coulomb spin liquids such as quantum spin ice. The emergent Coulomb interaction modifies the threshold production cross-section dramatically, changing the weak turn-on expected from the density of states to an abrupt onset reflecting the basic coupling parameters. The slow photon typical in existing lattice models and materials suppresses the intensity at finite momentum and allows profuse Cerenkov radiation beyond a critical momentum. These features are broadly consistent with recent numerical and experimental results. Keywords: Nonperturbative effects in field theory; Quantum electrodynamics; Quantum spin liquid; Spin dynamics; Spin ice; Diagrammatic methods
MIT Department
Massachusetts Institute of Technology. Center for Theoretical Physics
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DOI of Published Version
https://doi.org/10.1103/PhysRevLett.124.097204
