{ "id": "1011.3379", "version": "v2", "published": "2010-11-15T13:42:43.000Z", "updated": "2011-01-13T11:46:42.000Z", "title": "Time Reversal of Some Stationary Jump-Diffusion Processes from Population Genetics", "authors": [ "Martin Hutzenthaler", "Jesse E. Taylor" ], "comment": "23 pages, 1 figure, Advances in Applied Probability Vol 42, No 4, p 1147-1171, 2010", "categories": [ "math.PR" ], "abstract": "We describe the processes obtained by time reversal of a class of stationary jump-diffusion processes that model the dynamics of genetic variation in populations subject to repeated bottlenecks. Assuming that only one lineage survives each bottleneck, the forward process is a diffusion on [0,1] that jumps to the boundary before diffusing back into the interior. We show that the behavior of the time-reversed process depends on whether the boundaries are accessible to the diffusive motion of the forward process. If a boundary point is inaccessible to the forward diffusion, then time reversal leads to a jump-diffusion that jumps immediately into the interior whenever it arrives at that point. If, instead, a boundary point is accessible, then the jumps off of that point are governed by a weighted local time of the time-reversed process.", "revisions": [ { "version": "v2", "updated": "2011-01-13T11:46:42.000Z" } ], "analyses": { "subjects": [ "60J60", "60J55", "92D10" ], "keywords": [ "stationary jump-diffusion processes", "time reversal", "population genetics", "boundary point", "forward process" ], "note": { "typesetting": "TeX", "pages": 23, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2010arXiv1011.3379H" } } }