2 papers
cond-mat.str-el2024
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…
cond-mat.supr-con2024
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…