Dipole-Dipole Correlations for the sine-Gordon Model
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We consider the dipole-dipole correlations for the two-dimensional Coulomb gas/sine-Gordon model for β > 8π by a renormalization group method. First we re-establish the renormalization group analysis for the partition function using finite range decomposition of the covariance. Then we extend the analysis to the correlation functions. Finally, we show a power-law decay characteristic of the dipole gas.