79 citations · 727 across the 36 of their papers we have counts for
8 papers · 1 filter
Symmetry-Fractionalized Skin Effects in Non-Hermitian Luttinger Liquids
Christopher Ekman, Emil J. Bergholtz, Paolo Molignini
In one dimension, strongly correlated gapless systems are highly constrained due to conformal invariance, leading to the decoupling of low energy degrees of freedom corresponding t…
Topological phase transitions at finite temperature
Paolo Molignini, Nigel Cooper
The ground states of noninteracting fermions in one-dimension with chiral symmetry form a class of topological band insulators, described by a topological invariant that can be rel…
Probing Chern number by opacity and topological phase transition by a nonlocal Chern marker
Paolo Molignini, Bastien Lapierre, R. Chitra +1
In 2D semiconductors and insulators, the Chern number of the valence band Bloch state is an important quantity that has been linked to various material properties, such as the topo…
A supervised learning algorithm for interacting topological insulators based on local curvature
Paolo Molignini, Antonio Zegarra, Evert van Nieuwenburg +2
Topological order in solid state systems is often calculated from the integration of an appropriate curvature function over the entire Brillouin zone. At topological phase transiti…
Cross-dimensional universality classes in static and periodically driven Kitaev models
Paolo Molignini, Albert Gasull Celades, R. Chitra +1
The Kitaev model on the honeycomb lattice is a paradigmatic system known to host a wealth of nontrivial topological phases and Majorana edge modes. In the static case, the Majorana…
Edge mode manipulation through commensurate multifrequency driving
Paolo Molignini
We explore the impact of commensurate multifrequency driving protocols on the stability of topological edge modes in topological 1D systems of spinless fermions. Using Floquet theo…
Universal quantum criticality in static and Floquet-Majorana chains
Paolo Molignini, Wei Chen, R. Chitra
The topological phase transitions in static and periodically driven Kitaev chains are investigated by means of a renormalization group (RG) approach. These transitions, across whic…
Sensing Floquet-Majorana fermions via heat transfer
Paolo Molignini, Evert van Nieuwenburg, R. Chitra
Time periodic modulations of the transverse field in the closed XY spin-1/2 chain generate a very rich dynamical phase diagram, with a hierarchy of topological phases characterized…