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Perfect and ε-perfect simulation methods for the one-dimensional Kac equation

Author

Listed:
  • Corcoran Jem N.

    (Department of Applied Mathematics,University of Colorado, Box 526, Boulder CO 80309-0526, United States of America)

  • Jennings Dale
  • VaughanMiller Paul

    (Department of Applied Mathematics,University of Colorado, Box 526, CO 80309-0526, United States of America)

Abstract

We review the derivation of the Kac master equation model for random collisions of particles, its relationship to the Poisson process, and existing algorithms for simulating values from the marginal distribution of velocity for a single particle at any given time. We describe and implement a new algorithm that efficiently and more fully leverages properties of the Poisson process, show that it performs at least as well as existing methods, and give empirical evidence that it may perform better at capturing the tails of the single particle velocity distribution. Finally, we derive and implement a novel “ε-perfect sampling” algorithm for the limiting marginal distribution as time goes to infinity. In this case the importance is a proof of concept that has the potential to be expanded to more interesting (DSMC) direct simulation Monte Carlo applications.

Suggested Citation

  • Corcoran Jem N. & Jennings Dale & VaughanMiller Paul, 2016. "Perfect and ε-perfect simulation methods for the one-dimensional Kac equation," Monte Carlo Methods and Applications, De Gruyter, vol. 22(4), pages 291-305, December.
    • Handle: RePEc:bpj:mcmeap:v:22:y:2016:i:4:p:291-305:n:2
    DOI: 10.1515/mcma-2016-0114
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