title: Spin-Ice State of the Quantum Heisenberg Antiferromagnet on the Pyrochlore Lattice.
abstract: We study the low-temperature physics of the SU(2)-symmetric spin-1/2 Heisenberg antiferromagnet on a pyrochlore lattice and find "fingerprint" evidence for the thermal spin-ice state in this frustrated quantum magnet. Our conclusions are based on the results of bold diagrammatic Monte Carlo simulations, with good convergence of the skeleton series down to the temperature T/J=1/6. The identification of the spin-ice state is done through a remarkably accurate microscopic correspondence for the static structure factor between the quantum Heisenberg, classical Heisenberg, and Ising models at all accessible temperatures, and the characteristic bowtie pattern with pinch points observed at T/J=1/6. The dynamic structure factor at real frequencies (obtained by the analytic continuation of numerical data) is consistent with diffusive spinon dynamics at the pinch points.
authors.affiliation: National Laboratory for Physical Sciences at Microscale and Department of Modern Physics, University of Science and Technology of China, Hefei, Anhui 230026, China.|Department of Physics, University of Massachusetts, Amherst, Massachusetts 01003, USA.
authors.forename: Yuan
authors.initials: Y
authors.lastname: Huang
authors.affiliation: National Laboratory for Physical Sciences at Microscale and Department of Modern Physics, University of Science and Technology of China, Hefei, Anhui 230026, China.|Department of Physics, University of Massachusetts, Amherst, Massachusetts 01003, USA.
authors.forename: Kun
authors.initials: K
authors.lastname: Chen
authors.affiliation: National Laboratory for Physical Sciences at Microscale and Department of Modern Physics, University of Science and Technology of China, Hefei, Anhui 230026, China.|Department of Physics, University of Massachusetts, Amherst, Massachusetts 01003, USA.
authors.forename: Youjin
authors.initials: Y
authors.lastname: Deng
authors.affiliation: Department of Physics, University of Massachusetts, Amherst, Massachusetts 01003, USA.|National Research Center "Kurchatov Institute", 123182 Moscow, Russia.
authors.forename: Nikolay
authors.initials: N
authors.lastname: Prokof'ev
authors.affiliation: Department of Physics, University of Massachusetts, Amherst, Massachusetts 01003, USA.|National Research Center "Kurchatov Institute", 123182 Moscow, Russia.|Wilczek Quantum Center, Zhejiang University of Technology, Hangzhou 310014, China.
authors.forename: Boris
authors.initials: B
authors.lastname: Svistunov