Itô formula for mild solutions of SPDEs with Gaussian and non-Gaussian noise and applications to stability properties

Sergio Albeverio, Leszek Gawarecki, Vidyadhar Mandrekar, Barbara Rüdiger, Barun Sarkar

Research output: Contribution to journalArticlepeer-review

Abstract

<p> We use Yosida approximation to &filig;nd an It&ocirc; formula for mild solutions { Xx(t), t &ge; 0 }of SPDEs with Gaussianand non-Gaussian coloured noise, the non Gaussian noise being de&filig;ned through compensated Poisson random measure associated to a L&eacute;vy process. The functions to which we apply such It&ocirc; formula are in C1,2([0,T]&times;H), as in the case considered for SDEs in [19]. Using this It&ocirc; formula we prove exponential stability and exponential ultimate boundedness properties in mean square sense for mild solutions. We also compare such It&ocirc; formula to an It&ocirc; formula for mild solutions introduced by Ichikawain [15], and an It&ocirc; formula written in terms of the semigroup of the drift operator [6] which we extend before to the non Gaussian case.</p>
Original languageAmerican English
JournalarXiv:1612.09440 [math.PR]
Volume1
StatePublished - Dec 30 2016

Keywords

  • Stochastic Partial Differential Equations
  • Mild solutions
  • Itô Formula
  • Generator of a Semigroup
  • Yosida approximation
  • exponential stability

Disciplines

  • Mathematics

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