Zobrazeno 1 - 10
of 2 181
pro vyhledávání: '"Pietro, M."'
Autor:
Patricolo, Miriam, Gievers, Marcel, Fraboulet, Kilian, Al-Eryani, Aiman, Heinzelmann, Sarah, Bonetti, Pietro M., Toschi, Alessandro, Vilardi, Demetrio, Andergassen, Sabine
We extend the recently introduced single-boson exchange formulation to the computation of the self-energy from the Schwinger-Dyson equation (SDE). In particular, we derive its expression both in diagrammatic and in physical channels. The simple form
Externí odkaz:
http://arxiv.org/abs/2411.11661
Autor:
Bonetti, Pietro M., Jiang, Yi, Hu, Haoyu, Călugăru, Dumitru, Scherer, Michael M., Bernevig, B. Andrei, Classen, Laura
The discovery of a charge density wave in FeGe extends the discussion of the nature of charge order in kagome metals to a magnetic compound. Motivated by this observation, we combine density functional theory (DFT) and functional-renormalization-grou
Externí odkaz:
http://arxiv.org/abs/2411.10931
Motivated by the recent discovery of superconductivity in twisted bilayer WSe$_2$, we analyze the correlated physics in this system in the framework of a continuum model for the moir\'e superlattice. Using the symmetries in a fine-tuned limit of the
Externí odkaz:
http://arxiv.org/abs/2407.02393
A long standing problem in the study of the under-hole-doped cuprates has been the description of the Fermi surfaces underlying the high magnetic field quantum oscillations, and their connection to the higher temperature pseudogap metal. Harrison and
Externí odkaz:
http://arxiv.org/abs/2405.08817
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 hopping and a moderate interaction strength. In particular, we clarify the nature
Externí odkaz:
http://arxiv.org/abs/2403.09862
We investigate topological superconductivity in the Rashba-Hubbard model, describing heavy-atom superlattice and van der Waals materials with broken inversion. We focus in particular on fillings close to the van Hove singularities, where a large dens
Externí odkaz:
http://arxiv.org/abs/2304.07100
Comprehensive mean-field analysis of magnetic and charge orders in the two-dimensional Hubbard model
We present an unbiased mean-field analysis of magnetic and charge orders in the two-dimensional Hubbard model on a square lattice, both at zero and finite temperatures. Unrestricted Hartree-Fock calculations on large finite lattices are complemented
Externí odkaz:
http://arxiv.org/abs/2303.15358
Autor:
Bonetti, Pietro M., Metzner, Walter
We present a SU(2) gauge theory of fluctuating magnetic order in the two-dimensional Hubbard model. The theory is based on a fractionalization of electrons in fermionic chargons and bosonic spinons. The chargons undergo N\'eel or spiral magnetic orde
Externí odkaz:
http://arxiv.org/abs/2207.00829
Autor:
Fraboulet, Kilian, Heinzelmann, Sarah, Bonetti, Pietro M., Al-Eryani, Aiman, Vilardi, Demetrio, Toschi, Alessandro, Andergassen, Sabine
Publikováno v:
Eur. Phys. J. B 95, 202 (2022)
We illustrate the algorithmic advantages of the recently introduced single-boson exchange (SBE) formulation for the one-loop functional renormalization group (fRG), by applying it to the two-dimensional Hubbard model on a square lattice. We present a
Externí odkaz:
http://arxiv.org/abs/2206.14478
Autor:
Bonetti, Pietro M.
Publikováno v:
Phys. Rev. B 106, 155105 (2022)
We derive Ward identities for fermionic systems exhibiting a gauge symmetry that gets globally broken. In particular, we focus on the relation that connects the gauge field response functions to the transverse susceptibilities of the order parameter.
Externí odkaz:
http://arxiv.org/abs/2204.04132