<p>We study a finite-velocity random motion on the real line with alternating velocities <InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(-v\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mo>-</mo> <mi>v</mi> </mrow> </math></EquationSource> </InlineEquation> and <i>c</i>, subject to stochastic resetting to the origin. At each velocity-switching epoch, a Bernoulli trial determines whether the particle is instantaneously reset to the origin with probability <InlineEquation ID="IEq2"> <EquationSource Format="TEX">\(\theta \)</EquationSource> <EquationSource Format="MATHML"><math> <mi>θ</mi> </math></EquationSource> </InlineEquation> or it continues its motion with the opposite velocity with probability <InlineEquation ID="IEq3"> <EquationSource Format="TEX">\(1-\theta \)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mn>1</mn> <mo>-</mo> <mi>θ</mi> </mrow> </math></EquationSource> </InlineEquation>. The resulting reset times form a renewal process. We derive the probability distributions of the position-velocity process when the intertimes between consecutive velocity changes have identical (i) exponential distribution, and (ii) Erlang-2 distribution. We also obtain explicit expressions for the moments of the position process and, in case (i), the mean-square distance between the process with resetting and an independent counterpart without resetting. We further characterize the stationary distribution, expressing it in terms of the asymptotic average of the local time of the position process. Finally, we investigate the limiting behavior of the position density under a Kac-type scaling. In both cases (i) and (ii), the position density, conditioned on random initial velocity, converges to that of the Brownian motion with Poisson resetting.</p>

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A Generalized Telegraph Process with Resetting to the Origin Driven by Bernoulli Trials

  • Antonio Di Crescenzo,
  • Antonella Iuliano,
  • Gabriella Verasani

摘要

We study a finite-velocity random motion on the real line with alternating velocities \(-v\) - v and c, subject to stochastic resetting to the origin. At each velocity-switching epoch, a Bernoulli trial determines whether the particle is instantaneously reset to the origin with probability \(\theta \) θ or it continues its motion with the opposite velocity with probability \(1-\theta \) 1 - θ . The resulting reset times form a renewal process. We derive the probability distributions of the position-velocity process when the intertimes between consecutive velocity changes have identical (i) exponential distribution, and (ii) Erlang-2 distribution. We also obtain explicit expressions for the moments of the position process and, in case (i), the mean-square distance between the process with resetting and an independent counterpart without resetting. We further characterize the stationary distribution, expressing it in terms of the asymptotic average of the local time of the position process. Finally, we investigate the limiting behavior of the position density under a Kac-type scaling. In both cases (i) and (ii), the position density, conditioned on random initial velocity, converges to that of the Brownian motion with Poisson resetting.