37 citations · 230 across the 13 of their papers we have counts for
5 papers · 1 filter
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…