37 citations · 230 across the 13 of their papers we have counts for
13 papers
Interaction-driven first-order and higher-order topological superconductivity
Pietro M. Bonetti, Debmalya Chakraborty, Xianxin Wu +1
We investigate topological superconductivity in the Rashba-Hubbard model, describing heavy-atom superlattice and van der Waals materials with broken inversion. We focus in particul…
Comprehensive mean-field analysis of magnetic and charge orders in the two-dimensional Hubbard model
Robin Scholle, Pietro M. Bonetti, Demetrio Vilardi +1
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. Unrestricte…
Long-range order, bosonic fluctuations, and pseudogap in strongly correlated electron systems
Pietro Maria Bonetti
This thesis deals with the Hubbard model as prototypical model to describe the physics of electrons in the two-dimensional copper-oxide planes of high- cuprates. To get approx…
SU(2) gauge theory of the pseudogap phase in the two-dimensional Hubbard model
Pietro M. Bonetti, Walter Metzner
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 an…
Single-boson exchange functional renormalization group application to the two-dimensional Hubbard model at weak coupling
Kilian Fraboulet, Sarah Heinzelmann, Pietro M. Bonetti +4
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…
Local Ward identities for collective excitations in fermionic systems with spontaneously broken symmetries
Pietro M. Bonetti
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 respons…
Spin stiffness, spectral weight, and Landau damping of magnons in metallic spiral magnets
Pietro M. Bonetti, Walter Metzner
We analyze the properties of magnons in metallic electron systems with spiral magnetic order. Our analysis is based on the random phase approximation for the susceptibilities of ti…
Single boson exchange representation of the functional renormalization group for strongly interacting many-electron systems
Pietro M. Bonetti, Alessandro Toschi, Cornelia Hille +2
We present a reformulation of the functional renormalization group (fRG) for many-electron systems, which relies on the recently introduced single boson exchange (SBE) representati…
Dynamical functional renormalization group computation of order parameters and critical temperatures in the two-dimensional Hubbard model
Demetrio Vilardi, Pietro M. Bonetti, Walter Metzner
We analyze the interplay of antiferromagnetism and pairing in the two dimensional Hubbard model with a moderate repulsive interaction. Coupled charge, magnetic and pairing fluctuat…
Quantum Effects in the Aubry Transition
Pietro Maria Bonetti, Andrea Rucci, Vladan Vuletic +1
The Aubry transition between sliding and pinned phases, driven by the competition between two incommensurate length scales, represents a paradigm that is applicable to a large vari…
Accessing the ordered phase of correlated Fermi systems: vertex bosonization and mean-field theory within the functional renormalization group
Pietro M. Bonetti
We present a consistent fusion of functional renormalization group and mean-field theory which explicitly introduces a bosonic field via a Hubbard-Stratonovich transformation at th…
Charge carrier drop at the onset of pseudogap behavior in the two-dimensional Hubbard model
Pietro M. Bonetti, Johannes Mitscherling, Demetrio Vilardi +1
We show that antiferromagnetic spin-density wave order in the two-dimensional Hubbard model yields a drop of the charge carrier density as observed in recent transport measurements…
Local-field Theory of the BCS-BEC Crossover
Pietro Maria Bonetti, Maria Luisa Chiofalo
We develop a self-consistent theory unifying the description of a quantum Fermi gas in the presence of a Fano-Feshbach resonance in the whole phase diagram ranging from BCS to BEC…