Abstract
The continuum Kardar-Parisi-Zhang equation in one dimension is lattice discretized in such a way that the drift part is divergence free. This allows to determine explicitly the stationary measures. We map the lattice KPZ equation to a bosonic field theory which has a cubic anti-hermitian nonlinearity. Thereby it is established that the stationary two-point function spreads superdiffusively.
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On the occasion of the 100th Statistical Mechanics Meeting, December 2008 at Rutgers University, we dedicate this article to Joel Lebowitz as mentor and friend for so many years.
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Sasamoto, T., Spohn, H. Superdiffusivity of the 1D Lattice Kardar-Parisi-Zhang Equation. J Stat Phys 137, 917–935 (2009). https://doi.org/10.1007/s10955-009-9831-0
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DOI: https://doi.org/10.1007/s10955-009-9831-0