84 citations · 751 across the 59 of their papers we have counts for
5 papers · 1 filter
Zero Indirect Band Gap in Non-Hermitian Systems
S Rahul, Giandomenico Palumbo
Zero indirect gaps in band models are typically viewed as unstable and achievable only through fine-tuning. Recent works, however, have revealed robust semimetallic phases in Hermi…
Probing Tensor Monopoles and Gerbe Invariants in Three-Dimensional Topological Matter
Wojciech J. Jankowski, Robert-Jan Slager, Giandomenico Palumbo
We show that momentum-space tensor monopoles corresponding to nontrivial vector bundle generalizations, known as bundle gerbes, can be realized in bands of three-dimensional topolo…
Geometric Bloch oscillations and transverse displacement in flat band systems
Jing-Xin Liu, Giandomenico Palumbo, Marco Di Liberto
We investigate transport phenomena and dynamical effects in flat bands where the band dispersion plays no role. We show that wavepackets in geometrically non-trivial flat bands can…
Boundary Witten effect in multi-axion insulators
Giandomenico Palumbo
We explore novel topological responses and axion-like phenomena in three-dimensional insulating systems with spacetime-dependent mass terms encoding domain walls. Via a dimensional…
Fractonic self-duality and covariant magnetic fractons
Erica Bertolini, Giandomenico Palumbo
Fractons, excitations with restricted mobility, have emerged as a novel paradigm in high-energy and condensed matter physics, revealing deep connections to gauge theories and gravi…