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An electric-field representation of the harmonic XY model
Michael F. Faulkner, Steven T. Bramwell, Peter C. W. Holdsworth
The two-dimensional harmonic XY (HXY) model is a spin model in which the classical spins interact via a piecewise parabolic potential. We argue that the HXY model should be regarde…
Experimental signature of the attractive Coulomb force between positive and negative magnetic monopoles in spin ice
C. Paulsen, S. R. Giblin, E. Lhotel +3
A non-Ohmic current that grows exponentially with the square root of applied electric field is well known from thermionic field emission (the Schottky effect), electrolytes (the se…
From quantum to thermal topological-sector fluctuations of strongly interacting bosons in a ring lattice
Tommaso Roscilde, Michael F. Faulkner, Steven T. Bramwell +1
Inspired by recent experiments on Bose-Einstein condensates in ring traps, we investigate the topological properties of the phase of a one-dimensional Bose field in the presence of…