Zobrazeno 1 - 10
of 74
pro vyhledávání: '"Chupeau, Marie"'
Publikováno v:
Proc Natl Acad Sci (USA) 117, no. 3, 1383 (2020)
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 is assumed to generally decrease exponentially with increasing barrier
Externí odkaz:
http://arxiv.org/abs/1912.08071
Autor:
Chupeau, Marie
Nous déterminons d’abord l’impact d’un plan infini réfléchissant sur l’espace occupé par une marche brownienne bidimensionnelle à un temps fixé, que nous caractérisons par le périmètre moyen de son enveloppe convexe (plus petit polyg
Externí odkaz:
http://www.theses.fr/2016PA066167/document
Publikováno v:
New Journal of Physics 20, 075003 (2018)
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 arbitrarily short time. To this end, we make use of a time and space-depen
Externí odkaz:
http://arxiv.org/abs/1802.10512
Autor:
Chupeau, Marie, Besga, Benjamin, Guéry-Odelin, David, Trizac, Emmanuel, Petrosyan, Artyom, Ciliberto, Sergio
Publikováno v:
Phys. Rev. E 98, 010104 (2018)
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 temperature of the thermal bath. We demonstrate experimentally the effecti
Externí odkaz:
http://arxiv.org/abs/1801.09438
Publikováno v:
Proceedings of the National Academy of Sciences of the United States of America, 2020 Jan . 117(3), 1383-1388.
Externí odkaz:
https://www.jstor.org/stable/26897554
Publikováno v:
Phys. Rev. E, 91, 032106 (2015)
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 obtained for wedge angles of the form $\pi/n$ with $n$ a positive integer
Externí odkaz:
http://arxiv.org/abs/1501.02274
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 of random walks with short range memory. We derive the exact expressio
Externí odkaz:
http://arxiv.org/abs/1406.1687
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 instability that could generate the 100--1000-km undulations observed in Sa
Externí odkaz:
http://arxiv.org/abs/1404.4245
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 intriguing `flat' regions between radii 93,000 km and 98,000 km in which
Externí odkaz:
http://arxiv.org/abs/1404.4247
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 such impacts re-accretes on to the ring, though often at a slightly dif
Externí odkaz:
http://arxiv.org/abs/1209.2943