2011
DOI: 10.1103/physrevlett.106.074101
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Robust Exponential Acceleration in Time-Dependent Billiards

Abstract: A class of nonrelativistic particle accelerators in which the majority of particles gain energy at an exponential rate is constructed. The class includes ergodic billiards with a piston that moves adiabatically and is removed adiabatically in a periodic fashion. The phenomenon is robust: deformations that keep the chaotic character of the billiard retain the exponential energy growth. The growth rate is found analytically and is, thus, controllable. Numerical simulations corroborate the analytic predictions wi… Show more

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Cited by 51 publications
(83 citation statements)
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“…The problem is complicated for non-chaotic multi-dimensional billiards as well. Integrable billiards may prohibit [20] or allow [21] quadratic or slower Fermi acceleration, while exponential Fermi acceleration is possible for pseudo-integrable billiards [22] and billiards with multiple ergodic components [10,12,[23][24][25] with possibly mixed or pseudo-integrable dynamics.…”
Section: Fermi Accelerationmentioning
confidence: 99%
“…The problem is complicated for non-chaotic multi-dimensional billiards as well. Integrable billiards may prohibit [20] or allow [21] quadratic or slower Fermi acceleration, while exponential Fermi acceleration is possible for pseudo-integrable billiards [22] and billiards with multiple ergodic components [10,12,[23][24][25] with possibly mixed or pseudo-integrable dynamics.…”
Section: Fermi Accelerationmentioning
confidence: 99%
“…This unlimited growth of energy was denoted Fermi acceleration (FA) and is mainly associated with normal diffusion in phase space, where there is gain of kinetic energy [2]. One may find in the literature examples of FA that may present transport distinct from the normal diffusion, as exponential [3][4][5][6], ballistic [7,8] or even slower growths [9,10]. Also, interesting FA applications can be found in research areas such as plasma physics [11][12][13], astrophysics [14,15], atom-optics [16,17], and especially billiard dynamics [18][19][20][21][22].…”
Section: Introductionmentioning
confidence: 99%
“…In the particular focus of this work, the mechanism of FA has been noticed in the stadiumlike billiard [2,9,11,12], in the annular billiard [3,4,10], in the one-dimensional stochastic Fermi-Ulam billiard [5,6], in the elliptical billiard [7,8], in the Sinai's billiard [9,11], and in the Lorentz gas-like billiard [16]. Recent results on FA associated with the interaction of charge particles with magnetic islands or mirrors have also been reported [14,15,17,18].…”
Section: Introductionmentioning
confidence: 96%
“…In recent years, several studies have been developed in order to show dynamical properties which could contribute for inducing or suppressing Fermi acceleration (FA), which can be named as indefinite energy growth [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18]. The Loskutov-Ryabov-Akinshin conjecture says that a chaotic regime observed in static billiards is a sufficient condition to find FA when a periodic time-dependent perturbation is added on the billiard boundaries [1].…”
Section: Introductionmentioning
confidence: 99%