Pair correlations of logarithms of complex lattice points.

We study the correlations of pairs of complex logarithms of Z -lattice points in C at various scalings, proving the existence of pair correlation functions. We prove that at the linear scaling, the pair correlations exhibit level repulsion, as it sometimes occurs in statistical physics. We prove total loss of mass phenomena at superlinear scalings, and Poissonian behaviour at sublinear scalings. The case of Euler weights has applications to the pair correlation of the lengths of common perpendicular geodesic arcs from the maximal Margulis cusp neighbourhood to itself in the Bianchi orbifold PSL 2 (Z [ i ]) \ H R 3 . [ABSTRACT FROM AUTHOR]