79 citations · 153 across the 7 of their papers we have counts for
7 papers
Spacetime symmetry-enriched SymTFT: from LSM anomalies to modulated symmetries and beyond
Salvatore D. Pace, Ömer M. Aksoy, Ho Tat Lam
We extend the Symmetry Topological Field Theory (SymTFT) framework beyond internal symmetries by including geometric data that encode spacetime symmetries. Concretely, we enrich th…
(SPT-)LSM theorems from projective non-invertible symmetries
Salvatore D. Pace, Ho Tat Lam, Ömer M. Aksoy
Projective symmetries are ubiquitous in quantum lattice models and can be leveraged to constrain their phase diagram and entanglement structure. In this paper, we investigate the c…
Gauging modulated symmetries: Kramers-Wannier dualities and non-invertible reflections
Salvatore D. Pace, Guilherme Delfino, Ho Tat Lam +1
Modulated symmetries are internal symmetries that act in a non-uniform, spatially modulated way and are generalizations of, for example, dipole symmetries. In this paper, we system…
Topological Dipole Insulator
Ho Tat Lam, Jung Hoon Han, Yizhi You
We expand the concept of two-dimensional topological insulators to encompass a novel category known as topological dipole insulators (TDIs), characterized by conserved dipole momen…
Symmetries and anomalies of Kitaev spin- models: Identifying symmetry-enforced exotic quantum matter
Ruizhi Liu, Ho Tat Lam, Han Ma +1
We analyze the internal symmetries and their anomalies in the Kitaev spin- models. Importantly, these models have a lattice version of a 1-form symmetry, denoted…
Obstructions to Gapped Phases from Non-Invertible Symmetries
Anuj Apte, Clay Cordova, Ho Tat Lam
Quantum systems in 3+1-dimensions that are invariant under gauging a one-form symmetry enjoy novel non-invertible duality symmetries encoded by topological defects. These symmetrie…
Symmetry Protected Topological Phases and Majorana Mode in One-dimensional Quantum Walk with Boundary
Ho Tat Lam, Yue Yu, Kwok Yip Szeto
The topological phases in one-dimensional quantum walk can be classified by the coin parameters. By solving for the general exact solutions of bound states in one-dimensional quant…