Publication
Critical scaling in the cubic helimagnet Cu2OSeO3
Publications associées (38)
Eight-vertex criticality in the interacting Kitaev chain
Frédéric Mila, Natalia Chepiga
We show that including pairing and repulsion into the description of one-dimensional spinless fermions, as in the domain wall theory of commensurate melting or the interacting Kitaev chain, leads, for strong enough repulsion, to a line of critical points i ...
AMER PHYSICAL SOC2023Lie groups in the symmetric group: Reducing Ulam's problem to the simple case
Ulam asked whether all Lie groups can be represented faithfully on a countable set. We establish a reduction of Ulam's problem to the case of simple Lie groups. In particular, we solve the problem for all solvable Lie groups and more generally Lie groups w ...
San Diego2023Thermal critical points from competing singlet formations in fully frustrated bilayer antiferromagnets
Frédéric Mila, Antoine Yves Dimitri Fache
We examine the ground-state phase diagram and thermal phase transitions in a plaquettized fully frustrated bilayer spin-1/2 Heisenberg model. Based on a combined analysis from sign-problem free quantum Monte Carlo simulations, perturbation theory, and free ...
AMER PHYSICAL SOC2022Small-angle neutron scattering study of mesoscale magnetic disordering and skyrmion phase suppression in the frustrated chiral magnet Co6.75Zn6.75Mn6.51
Henrik Moodysson Rønnow, Jonathan White
Co-Zn-Mn chiral cubic magnets display versatile magnetic skyrmion phases, including equilibrium phases stable far above and far below room temperature, and the facile creation of robust far-from-equilibrium skyrmion states. In this system, compositional di ...
INT UNION CRYSTALLOGRAPHY2022Critical values in an anisotropic percolation on $\mathbb{Z}^2$
In this thesis, we consider an anisotropic finite-range bond percolation model on . On each horizontal layer for , we have edges for with $N\in\mathbb{N ...
EPFL2021Infinitesimal 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 LTD2020Critical scaling for an anisotropic percolation system on Z(2)
In this article, we consider an anisotropic finite-range bond percolation model on Z(2). On each horizontal layer {(x, i): x is an element of Z} we have edges for 1
UNIV WASHINGTON, DEPT MATHEMATICS2020Quantum Critical Regime in a Quadratically Driven Nonlinear Photonic Lattice
Vincenzo Savona, Fabrizio Minganti, Riccardo Rota, Cristiano Ciuti
We study an array of coupled optical cavities in the presence of two-photon driving and dissipation. The system displays a critical behavior similar to that of a quantum Ising model at finite temperature. Using the corner-space renormalization method, we c ...
AMER PHYSICAL SOC2019Critical fluctuations in the spin-orbit Mott insulator Sr3Ir2O7
X-ray magnetic critical scattering measurements and specific heat measurements were performed on the perovskite iridate Sr3Ir2O7. We find that the magnetic interactions close to the Neel temperature T-N = 283.4(2) K are three-dimensional. This contrasts wi ...
2019Stability for the mailing problem
We prove that optimal traffic plans for the mailing problem in Rd are stable with respect to variations of the given coupling, above the critical exponent α=1−1/d, thus solving an open problem stated in the book Optimal transportation networks, by Bernot, ...
2019