Spectroscopy of Spinons in Coulomb Quantum Spin Liquids

Siddhardh C. Morampudi, Frank Wilczek, Chris R. Laumann

Research output: Contribution to journalArticlepeer-review

9 Scopus citations


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.

Original languageEnglish (US)
Article number097204
JournalPhysical Review Letters
Issue number9
StatePublished - Mar 6 2020

ASJC Scopus subject areas

  • General Physics and Astronomy


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