The concept of discrepancy plays an important role in the study of uni
formity properties of point sets. For sets of random points, the discr
epancy is a random variable. We apply techniques from quantum field th
eory to translate the problem of calculating the probability density o
f (quadratic) discrepancies into that of evaluating certain path integ
rals. Both their perturbative and non-perturbative properties are disc
ussed. (C) 1998 Elsevier Science B.V.