Mathematics > Probability
[Submitted on 24 Mar 2014 (v1), last revised 31 May 2015 (this version, v2)]
Title:Monotone and boolean unitary Brownian motions
View PDFAbstract:The additive monotone (resp. boolean) unitary Brownian motion is a non-commutative stochastic process with monotone (resp. boolean) independent and stationary increments which are distributed according to the arcsine law (resp. Bernoulli law) . We introduce the monotone and booleen unitary Brownian motions and we derive a closed formula for their associated moments. This provides a description of their spectral measures. We prove that, in the monotone case, the multiplicative analog of the arcsine distribution is absolutely continuous with respect to the Haar measure on the unit circle, whereas in the boolean case the multiplicative analog of the Bernoulli distribution is discrete. Finally, we use quantum stochastic calculus to provide a realization of these processes as the stochastic exponential of the correspending additive Brownian motions.
Submission history
From: Hamdi Tarek [view email][v1] Mon, 24 Mar 2014 10:54:51 UTC (19 KB)
[v2] Sun, 31 May 2015 06:38:57 UTC (13 KB)
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