Abstract
We consider stochastic equations of the prototype
on a smooth domain \(D \subset {\mathbb{R}}^{d}\), with Dirichlet boundary condition, where β > 0, γ and κ are constants and \(\{B_{t}^{H}\), t ≥ 0} is a real-valued fractional Brownian motion with Hurst index H > 1∕2. By means of the associated random partial differential equation, obtained by the transformation \(v(t,x) = u(t,x)\exp \{\kappa B_{t}^{H}\}\), lower and upper bounds for the blowup time of u are given. Sufficient conditions for blowup in finite time and for the existence of a global solution are deduced in terms of the parameters of the equation. For the case H = 1∕2 (i.e. for Brownian motion), estimates for the probability of blowup in finite time are given in terms of the laws of exponential functionals of Brownian motion.
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Acknowledgements
This research was partially supported by the CNRS-CONACyT research grant “Blow-up of parabolic stochastic partial differential equations”. M. Dozzi acknowledges the European Commission for partial support by the grant PIRSES 230804 “Multifractionality”; he also acknowledges the hospitality of CIMAT, Guanajuato, where part of this work was done. E.T. Kolkovska and J.A. López-Mimbela acknowledge the hospitality of Institut Elie Cartan, Université de Lorraine.
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Dozzi, M., Kolkovska, E.T., López-Mimbela, J.A. (2014). Finite-Time Blowup and Existence of Global Positive Solutions of a Semi-linear Stochastic Partial Differential Equation with Fractional Noise. In: Korolyuk, V., Limnios, N., Mishura, Y., Sakhno, L., Shevchenko, G. (eds) Modern Stochastics and Applications. Springer Optimization and Its Applications, vol 90. Springer, Cham. https://doi.org/10.1007/978-3-319-03512-3_6
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