Concept
Universality (dynamical systems)
Publications associées (47)
Critical properties of the quantum Ashkin-Teller chain with chiral perturbations
Frédéric Mila, Natalia Chepiga
We investigate the nature of the phase transitions in the quantum Ashkin-Teller chain in the presence of chiral perturbations. We locate the Lifshitz line separating a region of direct chiral transitions from the region where the transition is through an i ...
College Pk2023Level crossings and chiral transitions in transverse-field Ising models of adatom and Rydberg chains
This thesis is motivated by recent experiments on systems described by extensions of the one-dimensional transverse-field Ising (TFI) model where (1) finite-size properties of Ising-ordered phases -- specifically, ground state level crossings -- were obser ...
EPFL2022Microscopic interplay of temperature and disorder of a one-dimensional elastic interface
Elisabeth Agoritsas, Thierry Giamarchi
Elastic interfaces display scale-invariant geometrical fluctuations at sufficiently large lengthscales. Their asymptotic static roughness then follows a power-law behavior, whose associated exponent provides a robust signature of the universality class to ...
2022Different erosion and entrainment mechanisms in snow avalanches
Johan Alexandre Philippe Gaume, Betty Sovilla, Xingyue Li
Erosion significantly affects the dynamics of gravity-driven mass flows. In snow avalanches, the snow cover can be substantially eroded but only partially entrained, however, there are very limited investigations to substantiate this difference. Here, we s ...
PERGAMON-ELSEVIER SCIENCE LTD2022Field-dependent roughness of moving domain walls in a Pt/Co/Pt magnetic thin film
The creep motion of domain walls driven by external fields in magnetic thin films is described by universal features related to the underlying depinning transition. One key parameter in this description is the roughness exponent characterizing the growth o ...
2021Lifshitz point at commensurate melting of chains of Rydberg atoms
Frédéric Mila, Natalia Chepiga
The recent investigation of chains of Rydberg atoms has brought back the problem of commensurateincommensurate transitions into the focus of current research. In two-dimensional classical systems or in one-dimensional quantum systems, the commensurate melt ...
AMER PHYSICAL SOC2021A numerical study of the statistics of roughness parameters for fluctuating interfaces
Self-affine rough interfaces are ubiquitous in experimental systems, and display characteristic scaling properties as a signature of the nature of disorder in their supporting medium, i.e. of the statistical features of its heterogeneities. Different metho ...
2021Unified analysis of topological defects in 2D systems of active and passive disks
Ignacio Pagonabarraga Mora, Pasquale Digregorio
We provide a comprehensive quantitative analysis of localized and extended topological defects in the steady state of 2D passive and active repulsive Brownian disk systems. We show that, both in and out-of-equilibrium, the passage from the solid to the hex ...
ROYAL SOC CHEMISTRY2021Infinitesimal asphericity changes the universality of the jamming transition
Matthieu Wyart, Carolina Brito Carvalho dos Santos
The jamming transition of non-spherical particles is fundamentally different from the spherical case. Non-spherical particles are hypostatic at their jamming points, while isostaticity is ensured in the case of the jamming of spherical particles. This stru ...
IOP PUBLISHING LTD2020Evolutionary Algorithm Optimization of Staggered Biological or Biomimetic Composites Using the Random Fuse Model
Roberto Guarino, Gianluca Costagliola, Federico Bosia
In Nature, biological materials such as nacre, bone, and dentin display an enhanced mechanical strength due to their structure characterized by hard inclusions embedded in a soft matrix. This structure has inspired the design of artificial materials with o ...
2020