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2013, 2013(special): 673-684. doi: 10.3934/proc.2013.2013.673

## Stochastic heat equations with cubic nonlinearity and additive space-time noise in 2D

 1 Southern Illinois University, Department of Mathematics, MC 4408, 1245 Lincoln Drive, Carbondale, IL 62901-7316

Received  September 2012 Revised  March 2013 Published  November 2013

Semilinear heat equations on rectangular domains in $\mathbb{R}^2$ (conduction through plates) with cubic-type nonlinearities and perturbed by an additive Q-regular space-time white noise are considered analytically. These models as 2nd order SPDEs (stochastic partial differential equations) with non-random Dirichlet-type boundary conditions describe the temperature- or substance-distribution on rectangular domains as met in engineering and biochemistry. We discuss their analysis by the eigenfunction approach allowing us to truncate the infinite-dimensional stochastic systems (i.e. the SDEs of Fourier coefficients related to semilinear SPDEs), to control its energy, existence, uniqueness, continuity and stability. The functional of expected energy is estimated at time $t$ in terms of system-parameters.
Citation: Henri Schurz. Stochastic heat equations with cubic nonlinearity and additive space-time noise in 2D. Conference Publications, 2013, 2013 (special) : 673-684. doi: 10.3934/proc.2013.2013.673
##### References:
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##### References:
 [1] E. Allen, "Modeling with Stochastic Differential Equations," Springer-Verlag, New York, 2007.  Google Scholar [2] L. Arnold, "Stochastic Differential Equations," John Wiley & Sons, Inc., New York, 1974  Google Scholar [3] A. Bensoussan and R. Temam, Équations aux dérivées partielles stochastiques non linéaires. I. (in French), Israel J. Math., 11 (1972) 95-129. Google Scholar [4] A. Bensoussan, Some existence results for stochastic partial differential equations, in Stochastic partial differential equations and applications, (Trento, 1990), p. 37-53, Pitman Res. Notes Math. Ser., 268, Longman Sci. Tech., Harlow, 1992.  Google Scholar [5] P.L. Chow, "Stochastic Partial Differential Equations," Chapman & Hall/CRC, Boca Raton, FL, 2007. Google Scholar [6] G. Da Prato and J. Zabczyk, "Stochastic Equations in Infinite Dimensions," Cambridge University Press, Cambridge, 1992.  Google Scholar [7] G. Da Prato and J. Zabzcyk, "Ergodicity for Infinite Dimensional Systems," Cambridge University Press, Cambridge, 1996.  Google Scholar [8] L.C. Evans, "Partial Differential Equations," AMS, Providence, 2010.  Google Scholar [9] T.C. Gard, "Introduction to Stochastic Differential Equations," Marcel Dekker, Basel, 1988.  Google Scholar [10] W. Grecksch and C. Tudor, "Stochastic Evolution Equations. A Hilbert space approach," Akademie-Verlag, Berlin, 1995.  Google Scholar [11] A.L. Hodgkin and W.A.H. Rushton, The electrical constants of a crustacean nerve fibre, Proc. Roy. Soc. London. B 133 (1946) 444-479. Google Scholar [12] R.Z. Khasminskiĭ, "Stochastic Stability of Differential Equations," Sijthoff & Noordhoff, Alphen aan den Rijn, 1980.  Google Scholar [13] C. Koch, "Biophysics of Computation: Information Processing in Single Neurons," Oxford U. Press, Oxford, 1999. Google Scholar [14] C. Koch and I. Segev, "Methods in Neuronal Modeling: From Ions to Networks (2-nd edition)," MIT Press, Cambridge, MA, 1998. Google Scholar [15] E. Pardoux, Équations aux dérivées partielles stochastiques non linéaires monotones, PhD. Thesis, U. Paris XI, 1975. Google Scholar [16] E. Pardoux, Stochastic partial differential equations and filtering of diffusion processes, Stochastics 3 (1979), no. 2, 127-167.  Google Scholar [17] B.L. Rozovskii, "Stochastic Evolution Systems," Kluwer, Dordrecht, 1990. Google Scholar [18] H. Schurz, "Stability, Stationarity, and Boundedness of Some Implicit Numerical Methods for Stochastic Differential Equations and Applications'', Logos-Verlag, Berlin, 1997.  Google Scholar [19] H. Schurz, Nonlinear stochastic wave equations in $\mathbbR^1$ with power-law nonlinearity and additive space-time noise, Contemp. Math., 440 (2007), 223-242. Google Scholar [20] H. Schurz, Existence and uniqueness of solutions of semilinear stochastic infinite-dimensional differential systems with H-regular noise, J. Math. Anal. Appl., 332 (1) (2007), 334-345.  Google Scholar [21] H. Schurz, Analysis and discretization of semi-linear stochastic wave equations with cubic nonlinearity and additive space-time noise, Discrete Contin. Dyn. Syst. Ser. S, 1 (2008), no. 2, 353-363.  Google Scholar [22] H. Schurz, Nonlinear stochastic heat equations with cubic nonlinearities and additive Q-regular noise in $\mathbbR^1$, Electron. J. Differ. Equ. Conf., 19 (2010), 221-233.  Google Scholar [23] A.N. Shiryaev, "Probability," Springer-Verlag, Berlin, 1996.  Google Scholar [24] G.J. Stuart and B. Sakmann, Active propagation of somatic action potentials into neocortical pyramidal cell dendrites, Nature 367 (1994) 69-72. Google Scholar [25] H.C. Tuckwell and J.B. Walsh, Random currents through nerve membranes. I. Uniform poisson or white noise current in one-dimensional cables, Biol. Cybern., 49 (1983), no. 2, 99-110. Google Scholar [26] C. Tudor, On stochastic evolution equations driven by continuous semimartingales, Stochastics 23 (1988), no. 2, 179-195.  Google Scholar [27] J.B. Walsh, An introduction to stochastic partial differential equations, Lecture Notes in Math., 1180, Springer, Berlin-New York, 1986, 265-439.  Google Scholar [28] J.B. Walsh, Finite element methods for parabolic stochastic PDE's, Potential Anal., 23 (2005), no. 1, 1-43.  Google Scholar
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