36 citations · 100 across the 7 of their papers we have counts for
7 papers
From Gross-Manes to Alday-Maldacena
Leonardo Pipolo de Gioia, Sabrina Pasterski, Pedro Vieira
Minimal surfaces govern the classical limit of several important observables in string theory. Two basic examples are the Gross--Manes saddle for high-energy string scattering in f…
Celestial Sector in CFT: Conformally Soft Symmetries
Leonardo Pipolo de Gioia, Ana-Maria Raclariu
We show that time intervals of width in 3-dimensional conformal field theories (CFT) on the Lorentzian cylinder admit an infinite dimensional symmetry enhancement in the l…
Eikonal Approximation in Celestial CFT
Leonardo Pipolo de Gioia, Ana-Maria Raclariu
We identify an eikonal regime in celestial CFT in which massless 2-2 scattering is dominated by t-channel exchange. We derive a formula for the celestial amplitude that resums…
Celestial Holography: Lectures on Asymptotic Symmetries
P. B. Aneesh, Geoffrey Compère, Leonardo Pipolo de Gioia +2
The aim of these Lectures is to provide a brief overview of the subject of asymptotic symmetries of gauge and gravity theories in asymptotically flat spacetimes as background mater…
Fractional Quantum Hall Effect in Weyl Semimetals
Chong Wang, L. Gioia, A. A. Burkov
Weyl semimetal may be thought of as a gapless topological phase protected by the chiral anomaly, where the symmetries involved in the anomaly are the charge conservation and…
Spherical topological-insulator nanoparticles: Quantum size effects and optical transitions
L. Gioia, M. G. Christie, U. Zülicke +2
We have investigated the interplay between band inversion and size quantization in spherically shaped nanoparticles made from topological-insulator (TI) materials. A general theore…
Dirac electrons in quantum rings
L. Gioia, U. Zülicke, M. Governale +1
We consider quantum rings realized in materials where the dynamics of charge carriers mimics that of two-dimensional (2D) Dirac electrons. A general theoretical description of the…