We report an experimental measurement of the temporal dependence of the area Aus in a twodimensional soap froth which has not been swept by the passage of soap films up to time t, as the froth… (More)

Optical based methods for non-invasive measurement of regional blood flow tend to incorrectly assess cerebral blood flow, due to contribution of extra-cerebral tissues to the obtained signal. We… (More)

The Kraichnan rapid advection model is recast as the stochastic dynamics of tracer trajectories. This framework replaces the random fields with a small set of stochastic ordinary differential… (More)

The fraction r(t) of spins which have never flipped up to time t is studied within a linear diffusion approximation to phase ordering. Numerical simulations show that, even in this simple context,… (More)

For the zero temperature Glauber dynamics of the q-state Potts model, we calculate the exact distribution of domain sizes by mapping the problem on an exactly soluble one-species coagulation model… (More)

Monitoring cerebral blood flow (CBF) is crucial, as inadequate perfusion, even for relatively short periods of time, may lead to brain damage or even death. Thus, significant research efforts are… (More)

We calculate, using numerical methods, the Lyapounov exponent γ(E) and the density of states ρ(E) at energy E of a one-dimensional non-Hermitian Schrödinger equation with off-diagonal disorder. For… (More)