Pascal Principle for Diffusion-Controlled Trapping Reactions

Details Pascal Principle for Diffusion-Controlled Trapping Reactions Pascal Principle for Diffusion-Controlled Trapping Reactions

2003-03-14

arxiv.org/abs/cond-mat/0303273v1

Physics

Condensed Matter

Statistical Mechanics

4 pages, RevTex, appearing in PRE

Scientific paper

10.1103/PhysRevE.67.045104

"All misfortune of man comes from the fact that he does not stay peacefully in his room", has once asserted Blaise Pascal. In the present paper we evoke this statement as the "Pascal principle" in regard to the problem of survival of an "A" particle, which performs a lattice random walk in presence of a concentration of randomly moving traps "B", and gets annihilated upon encounters with any of them. We prove here that at sufficiently large times for both perfect and imperfect trapping reactions, for arbitrary spatial dimension "d" and for a rather general class of random walks, the "A" particle survival probability is less than or equal to the survival probability of an immobile target in the presence of randomly moving traps.

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