English

Penalizing fractional Brownian motion for being negative

Probability 2022-02-07 v2

Abstract

We study a modification of the fractional analogue of the Brownian meander, which is Brownian motion conditioned to be positive on the time interval [0,1]{[0,1]}. More precisely, we determine the weak limit of a fractional Brownian motion which is penalized -- instead of being killed -- when leaving the positive half-axis. In the Brownian case, we give a representation of the limiting process in terms of an explicit SDE and compare it to the SDE fulfilled by the Brownian meander.

Keywords

Cite

@article{arxiv.1907.07608,
  title  = {Penalizing fractional Brownian motion for being negative},
  author = {Frank Aurzada and Micha Buck and Martin Kilian},
  journal= {arXiv preprint arXiv:1907.07608},
  year   = {2022}
}

Comments

Minor corrections