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A universal mechanism for long-range cross-correlations (2014)
Journal Article
Diakonos, F. K., Karlis, A. K., & Schmelcher, P. (2014). A universal mechanism for long-range cross-correlations. EPL, 105(2), 26004. https://doi.org/10.1209/0295-5075/105/26004

Cross-correlations are thought to emerge through interaction between particles. Here we present a universal dynamical mechanism capable of generating power-law cross-correlations between non-interacting particles exposed to an external potential. Thi... Read More about A universal mechanism for long-range cross-correlations.

Criticality and strong intermittency in the lorentz channel (2012)
Journal Article
Karlis, A. K., Diakonos, F. K., Petri, C., & Schmelcher, P. (2012). Criticality and strong intermittency in the lorentz channel. Physical Review Letters, 109(11), 110601. https://doi.org/10.1103/PhysRevLett.109.110601

We demonstrate the emergence of criticality due to power-law cross correlations in an ensemble of noninteracting particles propagating in an infinite Lorentz channel. The origin of these interparticle long-range correlations is the intermittent dynam... Read More about Criticality and strong intermittency in the lorentz channel.

A consistent approach for the treatment of Fermi acceleration in time-dependent billiards (2012)
Journal Article
Karlis, A. K., Diakonos, F. K., & Constantoudis, V. (2012). A consistent approach for the treatment of Fermi acceleration in time-dependent billiards. Chaos, 22(2), 026120. https://doi.org/10.1063/1.3697399

The standard description of Fermi acceleration, developing in a class of time-dependent billiards, is given in terms of a diffusion process taking place in momentum space. Within this framework, the evolution of the probability density function (PDF)... Read More about A consistent approach for the treatment of Fermi acceleration in time-dependent billiards.

Scattering off an oscillating target: Basic mechanisms and their impact on cross sections (2008)
Journal Article
Brouzos, I., Karlis, A. K., Chrysanthakopoulos, C. A., Diakonos, F. K., Constantoudis, V., Schmelcher, P., & Benet, L. (2008). Scattering off an oscillating target: Basic mechanisms and their impact on cross sections. Physical Review E, 78(5), 056207. https://doi.org/10.1103/PhysRevE.78.056207

We investigate classical scattering off a harmonically oscillating target in two spatial dimensions. The shape of the scatterer is assumed to have a boundary which is locally convex at any point and does not support the presence of any periodic orbit... Read More about Scattering off an oscillating target: Basic mechanisms and their impact on cross sections.

Rare events and their impact on velocity diffusion in a stochastic Fermi-Ulam model (2008)
Journal Article
Karlis, A. K., Diakonos, F. K., Constantoudis, V., & Schmelcher, P. (2008). Rare events and their impact on velocity diffusion in a stochastic Fermi-Ulam model. Physical Review E, 78(4), 046213. https://doi.org/10.1103/PhysRevE.78.046213

A simplified version of the stochastic Fermi-Ulam model is investigated in order to elucidate the effect of a class of rare low-velocity events on the velocity diffusion process and consequently Fermi acceleration. The relative fraction of these even... Read More about Rare events and their impact on velocity diffusion in a stochastic Fermi-Ulam model.

Fermi acceleration in the randomized driven Lorentz gas and the Fermi-Ulam model (2007)
Journal Article
Constantoudis, V., Karlis, A. K., Papachristou, P. K., Diakonos, F. K., & Schmelcher, P. (2007). Fermi acceleration in the randomized driven Lorentz gas and the Fermi-Ulam model. Physical Review E, 76(1), 016214. https://doi.org/10.1103/PhysRevE.76.016214

Fermi acceleration of an ensemble of noninteracting particles evolving in a stochastic two-moving wall variant of the Fermi-Ulam model (FUM) and the phase randomized harmonically driven periodic Lorentz gas is investigated. As shown in, the static wa... Read More about Fermi acceleration in the randomized driven Lorentz gas and the Fermi-Ulam model.

Hyperacceleration in a stochastic Fermi-Ulam model (2006)
Journal Article
Karlis, A. K., Papachristou, P. K., Diakonos, F. K., Constantoudis, V., & Schmelcher, P. (2006). Hyperacceleration in a stochastic Fermi-Ulam model. Physical Review Letters, 97(19), 194102-194106. https://doi.org/10.1103/PhysRevLett.97.194102

Fermi acceleration in a Fermi-Ulam model, consisting of an ensemble of particles bouncing between two, infinitely heavy, stochastically oscillating hard walls, is investigated. It is shown that the widely used approximation, neglecting the displaceme... Read More about Hyperacceleration in a stochastic Fermi-Ulam model.


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