%0 Journal Article %T Self-intersection local time: Critical exponent, large deviations, and laws of the iterated logarithm %A Richard F. Bass %A Xia Chen %J Mathematics %D 2005 %I arXiv %R 10.1214/009117904000000504 %X If \beta_t is renormalized self-intersection local time for planar Brownian motion, we characterize when Ee^{\gamma\beta_1} is finite or infinite in terms of the best constant of a Gagliardo-Nirenberg inequality. We prove large deviation estimates for \beta_1 and -\beta_1. We establish lim sup and lim inf laws of the iterated logarithm for \beta_t as t\to\infty. %U http://arxiv.org/abs/math/0503592v1