Magnon interactions in a moderately correlated Mott insulator

Q Wang, S Mustafi, E Fogh, N Astrakhantsev… - Nature …, 2024 - nature.com
Quantum fluctuations in low-dimensional systems and near quantum phase transitions have
significant influences on material properties. Yet, it is difficult to experimentally gauge the …

Spiral to stripe transition in the two-dimensional Hubbard model

R Scholle, W Metzner, D Vilardi, PM Bonetti - Physical Review B, 2024 - APS
We obtain an almost complete understanding of the mean-field phase diagram of the two-
dimensional Hubbard model on a square lattice with a sizable next-nearest-neighbor …

CDMFT+ HFD: An extension of dynamical mean field theory for nonlocal interactions applied to the single band extended Hubbard model

S Kundu, D Sénéchal - SciPost Physics Core, 2024 - scipost.org
We examine the phase diagram of the extended Hubbard model on a square lattice, for both
attractive and repulsive nearest-neighbor interactions, using CDMFT+ HFD, a combination …

Magnetic phase diagram of the three-dimensional doped Hubbard model

L Rampon, F Šimkovic IV, M Ferrero - arXiv preprint arXiv:2409.08848, 2024 - arxiv.org
We establish the phase diagram of the Hubbard model on a cubic lattice for a wide range of
temperatures, dopings and interaction strengths, considering both commensurate and …

Variational Monte Carlo study of stripes as a function of doping in the Hubbard model

A Lechiara, V Marino, LF Tocchio - arXiv preprint arXiv:2403.02073, 2024 - arxiv.org
We perform variational Monte Carlo simulations of the single-band Hubbard model on the
square lattice with both nearest ($ t $) and next-nearest ($ t'$) neighbor hoppings. Our work …

Magnetic quantum criticality: dynamical mean-field perspective

S Adler, DR Fus, MO Malcolms, A Vock, K Held… - arXiv preprint arXiv …, 2024 - arxiv.org
We investigate the magnetic quantum phase-transitions in bulk correlated metals at the level
of dynamical mean-field theory. To this end, we focus on the Hubbard model on a simple …

Thermopower across Fermi-volume-changing quantum phase transitions without symmetry breaking

P Lunts, A Patel, S Sachdev - arXiv preprint arXiv:2412.15330, 2024 - arxiv.org
We describe the evolution of low-temperature thermopower across Fermi-volume-changing
quantum phase transitions in Kondo lattice models without symmetry breaking. This …

Mean-field analysis of a Hubbard interaction on Bernal Bilayer Graphene

R Scholle, L Classen - arXiv preprint arXiv:2412.15945, 2024 - arxiv.org
We perform unrestricted Hartree-Fock calculations on the 2D Hubbard model on a
honeycomb and bilayer honeycomb lattice at both zero and finite temperatures. Finite size …

Unified Investigation of Rapid Hall Coefficient Changes in Cuprates: Pseudogap and Fermi Surface Influences

Y Su, H Li, H Huang, D Li - arXiv preprint arXiv:2409.00929, 2024 - arxiv.org
High-$ T_c $ cuprates are characterized by strong spin fluctuations, which give rise to
antiferromagnetic and pseudogap phases and may be key to the high superconducting …

Charge density wave solutions of the Hubbard model in the composite operator formalism

A Banerjee, E Pangburn, C Mahato, A Ghosal… - arXiv preprint arXiv …, 2024 - arxiv.org
We investigate the charge density wave phase in the strongly correlated Hubbard model
without any other broken symmetry phase. Starting from the atomic Hamiltonian with no …