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| Report/Journal Article | PUBDB-2017-00283 |
; ; ; ; ;
2016
Inst.
Woodbury, NY
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Please use a persistent id in citations: doi:10.1103/PhysRevB.94.115120 doi:10.3204/PUBDB-2017-00283
Report No.: arXiv:1511.00881
Abstract: We present detailed analytic calculations of finite-volume energy spectra, mean-field theory, as well as a systematic low-energy effective field theory for the square lattice quantum dimer model. An emergent approximate spontaneously broken SO(2) symmetry gives rise to a pseudo-Goldstone boson. Remarkably, this soft phononlike excitation, which is massless at the Rokhsar-Kivelson (RK) point, exists far beyond this point. The Goldstone physics is captured by a systematic low-energy effective field theory. We determine its low-energy parameters by matching the analytic effective field theory with exact diagonalization results. This confirms that the model exists in the columnar (and not in a plaquette or mixed) phase all the way to the RK point.
Keyword(s): effective field theory ; energy spectrum ; finite size ; lattice ; string ; fractional ; Goldstone particle ; Monte Carlo ; energy: low
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Finite-Volume Energy Spectrum, Fractionalized Strings, and Low-Energy Effective Field Theory for the Quantum Dimer Model on the Square Lattice
35 p. (2015)
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