output
20192026
most citedTransient amplification in stable Floquet media

12 citations

13 papers

quant-ph2026

Precision-Induced Irreversibility in non-Hermitian systems

Luis E. F. Foa Torres, G. Pappas, V. Achilleos +1

Non-Hermitian evolution is mathematically invertible, yet finite dynamic range imposes a sharp operational limit on reversibility. We identify Precision-Induced Irreversibility (PI…

nlin.PS2026★ 4 cited

Nonlinear skin breathing modes in one-dimensional nonreciprocal mechanical lattices

Bertin Many Manda

We investigate the interplay of nonreciprocity and nonlinearity in a one-dimensional nonlinear Klein-Gordon chain of classical oscillators coupled by asymmetric springs, akin to a…

cond-mat.mes-hall2025★ 1 cited

Solution of Wave Acceleration and Non-Hermitian Jump in Nonreciprocal Lattices

Sayan Jana, Bertin Many Manda, Vassos Achilleos +2

The time evolution of initially localized wavepackets in the discrete Hatano-Nelson lattice displays a rich dynamical structure shaped by the interplay between dispersion and nonre…

cond-mat.mes-hall2025

Exciton-resonant detection of high-frequency surface acoustic waves from subwavelength metal gratings

Olga Ken, Dmytro Horiachyi, Ilya Akimov +8

We report on all-optical generation and detection of high-frequency (up to about 30 GHz) surface acoustic waves (SAWs) in GaAs/AlGaAs heterostructures with short-period Au gratings…

cond-mat.mtrl-sci2025★ 1 cited

Nonlinear phononics in BiTe nanoscale thin films: A theoretical approach

A. Levchuk, R. Busselez, G. Vaudel +3

Density Functional Theory (DFT) calculations not only allow to predict the vibrational and optical properties of solids but also to understand and disentangle the mechanisms playin…

quant-ph2024★ 1 cited

Robustness of perfect transmission resonances to asymmetric perturbation

Ioannis Kiorpelidis, Panayotis Kalozoumis, Georgios Theocharis +3

We investigate the impact of asymmetric perturbations on the perfect transmission resonances (PTRs) of one-dimensional finite periodic systems. With no perturbations, the scatterin…

cond-mat.mes-hall2024★ 10 cited

Nonlinear Corner States in Topologically Nontrivial Kagome Lattice

K Prabith, Georgios Theocharis, Rajesh Chaunsali

We investigate a higher-order topological insulator (HOTI) under strong nonlinearity, focusing on the existence and stability of high-amplitude corner states, which can find applic…

cond-mat.other2024★ 12 cited

Transient amplification in stable Floquet media

Ioannis Kiorpelidis, Fotios K. Diakonos, Georgios Theocharis +1

The Mathieu equation occurs naturally in the description of vibrations or in the propagation of waves in media with time-periodic refractive index. It is known to lead to exponenti…

cs.HC2023

A first step towards an ecosystem meta-model for humancentered design in case of disabled users

Christophe Kolski, Nadine Vigouroux, Yohan Guerrier +2

The involvement of the ecosystem or social environment of the disabled user is considered as very useful and even essential for the human-centered design of assistive technologies.…

math.ST2022

On misspecification in cusp-type change-point models

O V Chernoyarov, S Dachian, Yu A Kutoyants

The problem of parameter estimation by i.i.d. observations of an inhomogeneous Poisson process is considered in situation of misspecification. The model is that of a Poissonian sig…

math.ST2022

Fast calibration of weak FARIMA models

Samir Ben Hariz, Alexandre Brouste, Youssef Esstafa +1

In this paper, we investigate the asymptotic properties of Le Cam's one-step estimator for weak Fractionally AutoRegressive Integrated Moving-Average (FARIMA) models. For these mod…

math.ST2019

Hypotheses testing and posterior concentration rates for semi-Markov processes

V Barbu, Ghislaine Gayraud, N. Limnios +1

In this paper, we adopt a nonparametric Bayesian approach and investigate the asymptotic behavior of the posterior distribution in continuous time and general state space semi-Mark…

cond-mat.soft2019★ 1 cited

Extension of the Hertz model for accounting to surface tension in nano-indentation tests of soft materials

Christophe Fond, O. Noël, M. Brogly

The contact between a spherical indenter and a solid is considered. A numerical finite element model (F. E. M) to taking into account the surface tension of the solid is presented…