We present a new methodology to analyze large classes of (classical and rough) stochastic volatility models, with special regard short-time small noise formulae for option prices. Our main tool is the theory regularity structures, which we use in form [Bayer et al; A structure rough volatility, 2017]. In essence, implement Laplace method on space models (in sense Hairer), generalizes classical ...

Most literature on quantum collision models (CMs) usually considers periodic weak collisions featuring a fixed waiting time between two next collisions. Some works have yet addressed CMs with random and strong (stochastic CMs). This short paper discusses how the open dynamics arising from these types of can be formally mapped one another. achieved for given stochastic CM by constructing an asso...