6 papers
Robust Signatures of Fragile Topology
Viktor Könye, Ihor Nimyi, Oleg Janson +3
Some topological phases of matter are called fragile. They do not generically host protected gapless boundary states and they can be trivialized by adding additional valence bands.…
Invertible Symmetry and Spontaneous Duality Breaking in the Transverse-Field Ising Model
José Dupont, Jasper van Wezel
The self-duality of the transverse-field Ising model is an archetype for dualities that, alongside symmetry and topology, are used as an organizing principle throughout modern phys…
Entropy from Entanglement in Quantum State Reduction
Lisa Lenstra, Jasper van Wezel
The Von Neumann entropy of reduced states is a measure of bipartite entanglement. Despite its name, the entanglement entropy cannot by itself be used as a resource for creating the…
Fragile topology for six-fold rotation symmetry indicated by the concentric Wilson loop spectrum
Xinyang Li, Lumen Eek, Jasper van Wezel +1
We investigate topological phase transitions for the Haldane and Kane-Mele model in a lattice with symmetry, which consists of triangles and hexagons arranged in a two-dimensi…
Superluminal signalling witness for quantum state reduction
Aritro Mukherjee, Lisa Lenstra, Lotte Mertens +1
Models for quantum state reduction address the quantum measurement problem by suggesting weak modifications to Schrödinger's equation that have no observable effect at microscopic…
Synthetic horizons in an atomic chain: Horizon-induced effects and connections to quantum Hall systems
Ali G. Moghaddam, Viktor Könye, Viktor Könye +3
We investigate the sine model, a one-dimensional tight-binding Hamiltonian with position-dependent sinusoidal hopping, and demonstrate the formation of synthetic horizons where ele…