19 citations · 63 across the 14 of their papers we have counts for
14 papers
Surface lone-pair polarization probed by quantum-geometric transport in tellurium
Nathanael N. Batista, Wendel S. Paz, Manuel Suárez-Rodríguez +10
Stereochemically active lone pairs are ubiquitous microscopic sources of polarity in molecules and solids, but their collective behavior in crystals is often hidden by symmetry or…
Superconducting properties of the three-dimensional Hofstadter-Hubbard model below the critical flux for Weyl points
Pierpaolo Fontana, Luca Lepori, Andrea Trombettoni
The three-dimensional Hofstadter model exhibits a critical rational flux at which Weyl points emerge in the single-particle spectrum. We study the superconducting regime of the mod…
Polar unidirectional magnetotransport in type tellurene from quantum geometry
Claudio Iacovelli, Pierpaolo Fontana, Victor Velasco +5
Unidirectional magnetoresistance, or electric magnetochiral anisotropy (eMChA), is a nonlinear magnetotransport phenomenon that arises in noncentrosymmetric conductors , where chan…
Gate-Tunable Giant Negative Magnetoresistance in Tellurene Driven by Quantum Geometry
Marcello B. Silva Neto, Chang Niu, Marcus V. O. Moutinho +5
Negative magnetoresistance in conventional two-dimensional electron gases is a well-known phenomenon, but its origin in complex and topological materials, especially those endowed…
The Lattice Schwinger Model and Its Quantum Simulation
Joao C. Pinto Barros, Pierpaolo Fontana, Pasquale Sodano +1
In this chapter we review results on the lattice Schwinger model. In par-ticular, we show how the effect of the anomaly is reproduced on the lattice. We connect these results to re…
Renormalized dual basis for scalable simulations of 2+1D compact quantum electrodynamics
Marc Miranda-Riaza, Pierpaolo Fontana, Alessio Celi
The classical and quantum simulation of lattice gauge theories (LGTs) with Lie groups is hindered by the infinite-dimensional Hilbert space of gauge degrees of freedom. In a recent…
Mean Field Approaches to Lattice Gauge Theories: A Review
Pierpaolo Fontana, Andrea Trombettoni
Due to their broad applicability, gauge theories (GTs) play a crucial role in various areas of physics, from high-energy physics to condensed matter. Their formulations on lattices…
Quantum geometry and the electric magnetochiral anisotropy in noncentrosymmetric polar media
Pierpaolo Fontana, Victor Velasco, Chang Niu +6
The electric magnetochiral anisotropy is a nonreciprocal phenomenon accessible via second harmonic transport in noncentrosymmetric, time-reversal invariant materials, in which the…
An efficient finite-resource formulation of non-Abelian lattice gauge theories beyond one dimension
Pierpaolo Fontana, Marc Miranda Riaza, Alessio Celi
Non-Abelian gauge theories provide the most accurate description of fundamental interactions, showing remarkable agreement with experimental data in cosmology and particle physics.…
Critical magnetic flux for Weyl points in the three-dimensional Hofstadter model
Pierpaolo Fontana, Andrea Trombettoni
We investigate the band structure of the three-dimensional Hofstadter model on cubic lattices, with an isotropic magnetic field oriented along the diagonal of the cube with flux $Φ…
Quantum simulator of link models using spinor dipolar ultracold atoms
Pierpaolo Fontana, Joao C. Pinto Barros, Andrea Trombettoni
We propose a scheme for the quantum simulation of quantum link models in two-dimensional lattices. Our approach considers spinor dipolar gases on a suitably shaped lattice, where t…
Topological van Hove singularities at phase transitions in Weyl metals
Pierpaolo Fontana, Michele Burrello, Andrea Trombettoni
We show that in three-dimensional (3D) topological metals, a subset of the van Hove singularities of the density of states sits exactly at the transitions between topological and t…
Reformulation of gauge theories in terms of gauge invariant fields
Pierpaolo Fontana, Joao C. Pinto Barros, Andrea Trombettoni
We present a reformulation of gauge theories in terms of gauge invariant fields. Focusing on Abelian theories, we show that the gauge and matter covariant fields can be recombined…
Scaling behavior of Ising systems at first-order transitions
Pierpaolo Fontana
We investigate how the scaling behavior of finite systems at magnetic first-order transitions (FOTs) with relaxational dynamics changes in correspondence of various boundary condit…