D. Khoshnevisan et Tm. Lewis, THE UNIFORM MODULUS OF CONTINUITY OF ITERATED BROWNIAN-MOTION, Journal of theoretical probability, 9(2), 1996, pp. 317-333
Let X be a Brownian motion defined on the line (with X(0) = 0) and let
Y be an independent Brownian motion defined on the nonnegative real n
umbers. For all t greater than or equal to 0, we define the iterated B
rownian motion (IBM), Z, by setting Z(t) corresponds to X(Y-t). In thi
s paper we determine the exact uniform modulus of continuity of the pr
ocess Z.