66 citations · 294 across the 15 of their papers we have counts for
15 papers
Optimizing Brownian escape rates by potential shaping
Marie Chupeau, Jannes Gladrow, Alexei Chepelianskii +2
Brownian escape is key to a wealth of physico-chemical processes, including polymer folding, and information storage. The frequency of thermally activated energy barrier crossings…
Engineered Swift Equilibration for Brownian objects: from underdamped to overdamped dynamics
Marie Chupeau, Sergio Ciliberto, David Guéry-Odelin +1
We propose a general framework to study transformations that drive an underdamped Brownian particle in contact with a thermal bath from an equilibrium state to a new one in an arbi…
Thermal bath Engineering for Swift Equilibration
Marie Chupeau, Benjamin Besga, David Guéry-Odelin +3
We propose a new protocol that ensures the fast equilibration of an overdamped harmonic oscillator by a joint time-engineering of the confinement strength and of the effective temp…
Random Search with Memory in Patchy Media: Exploration-Exploitation Tradeoff
M. Chupeau, O. Benichou, S. Redner
How to best exploit patchy resources? This long-standing question belongs to the extensively studied class of explore/exploit problems that arise in a wide range of situations, fro…
Role of Depletion on the Dynamics of a Diffusing Forager
O. Bénichou, M. Chupeau, S. Redner
We study the dynamics of a starving random walk in general spatial dimension . This model represents an idealized description for the fate of an unaware forager whose motion is…
Cover times of random searches
M. Chupeau, O. Bénichou, R. Voituriez
How long does it take a random searcher to visit all sites of a given domain? This time, known as the cover time, is a key observable to quantify the efficiency of exhaustive searc…
Universality classes of foraging with resource renewal
M. Chupeau, O. Bénichou, S. Redner
We determine the impact of resource renewal on the lifetime of a forager that depletes its environment and starves if it wanders too long without eating. In the framework of the mi…
Mean perimeter of the convex hull of a random walk in a semi-infinite medium
M. Chupeau, O. Bénichou, S. N. Majumdar
We study various properties of the convex hull of a planar Brownian motion, defined as the minimum convex polygon enclosing the trajectory, in the presence of an infinite reflectin…
Optimal strategy to capture a skittish lamb wandering near a precipice
M. Chupeau, O. Bénichou, S. Redner
We study the splitting probabilities for a one-dimensional Brownian motion in a cage whose two boundaries move at constant speeds and . This configuration corresponds to…
Survival probability of a Brownian motion in a planar wedge of arbitrary angle
Marie Chupeau, Olivier Bénichou, Satya N. Majumdar
We study the survival probability and the first-passage time distribution for a Brownian motion in a planar wedge with infinite absorbing edges. We generalize existing results obta…
Convex hull of a Brownian motion in confinement
M. Chupeau, O. Bénichou, S. N. Majumdar
We study the effect of confinement on the mean perimeter of the convex hull of a planar Brownian motion, defined as the minimum convex polygon enclosing the trajectory. We use a mi…
Mean cover time of one-dimensional persistent random walks
Marie Chupeau, Olivier Bénichou, Raphaël Voituriez
The cover time is defined as the time needed for a random walker to visit every site of a confined domain. Here, we focus on persistent random walks, which provide a minimal model…
The ballistic transport instability in Saturn's rings III: numerical simulations
Henrik Latter, Gordon Ogilvie, Marie Chupeau
Saturn's inner B-ring and its C-ring support wavetrains of contrasting amplitudes but with similar length scales, 100-1000 km. In addition, the inner B-ring is punctuated by two in…
The ballistic transport instability in Saturn's rings II: nonlinear wave dynamics
Henrik Latter, Gordon Ogilvie, Marie Chupeau
The ejecta discharged by impacting meteorites can redistribute a planetary ring's mass and angular momentum. This `ballistic transport' of ring properties instigates a linear insta…
The ballistic transport instability in Saturn's rings I: formalism and linear theory
Henrik Latter, Gordon Ogilvie, Marie Chupeau
Planetary rings sustain a continual bombardment of hypervelocity meteoroids that erode the surfaces of ring particles on time scales of 10^5 - 10^7 years. The debris ejected from s…