Concept
Hamiltonien de Heisenberg
Publications associées (101)
A Spectral Ansatz for The Long-Time Homogenization of The Wave Equation
- Consider the wave equation with heterogeneous coefficients in the homogenization regime. At large times, the wave interacts in a nontrivial way with the heterogeneities, giving rise to effective dispersive effects. The main achievement of the present wor ...
Phase diagram of the J-Jd Heisenberg model on the maple leaf lattice: Neural networks and density matrix renormalization group
We microscopically analyze the nearest-neighbor Heisenberg model on the maple leaf lattice through neural quantum state (NQS) and infinite density matrix renormalization group (iDMRG) methods. Embarking to parameter regimes beyond the exact dimer singlet g ...
Amer Physical Soc2024Spin, Charge, and ?-Spin Separation in One-Dimensional Photodoped Mott Insulators
We show that effectively cold metastable states in one-dimensional photodoped Mott insulators described by the extended Hubbard model exhibit spin, charge, and q-spin separation. Their wave functions in the large on-site Coulomb interaction limit can be ex ...
AMER PHYSICAL SOC2023Numerical investigation of bound states in quantum magnets
Bound-states of particles are an interesting problem in quantum mechanics dating back to 1931 Bethe's solution of spin-1/2 Heisenberg chain. These exotic composite states are realized in quantum magnets and are detectable in inelastic neutron scattering (I ...
EPFL2023Continuous-variable neural network quantum states and the quantum rotor model
We initiate the study of neural network quantum state algorithms for analyzing continuous-variable quantum systems in which the quantum degrees of freedom correspond to coordinates on a smooth manifold. A simple family of continuous-variable trial wavefunc ...
SPRINGERNATURE2023Possibility to detect the bound state of the Heisenberg ferromagnetic chain at intermediate temperature
Frédéric Mila, Mithilesh Nayak
Motivated by the lack of direct evidence with inelastic neutron scattering of the well documented bound state of Heisenberg ferromagnets, we use the time-dependent thermal density matrix renormalization group algorithm to study the temperature dependence o ...
AMER PHYSICAL SOC2022Multipolar Modeling of Spatially Dispersive Metasurfaces
Olivier Martin, Karim Achouri, Ville Tuovi Tiukuvaara
There is today a growing need to accurately model the angular scattering response of metasurfaces for optical analog processing applications. However, the current metasurface modeling techniques are not well suited for such a task since they are limited to ...
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2022