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Quantum Spin Liquid with Even Ising Gauge Field Structure on Kagome Lattice
Yan-Cheng Wang, Xue-Feng Zhang, Frank Pollmann +2
Employing large-scale quantum Monte Carlo simulations, we study the extended model on the kagome lattice. A quantum spin liquid phase with effective even Ising…
Finding purifications with minimal entanglement
Johannes Hauschild, Eyal Leviatan, Jens H. Bardarson +3
Purification is a tool that allows to represent mixed quantum states as pure states on enlarged Hilbert spaces. A purification of a given state is not unique and its entanglement s…
Diffusive hydrodynamics of out-of-time-ordered correlators with charge conservation
Tibor Rakovszky, Frank Pollmann, C. W. von Keyserlingk
The scrambling of quantum information in closed many-body systems, as measured by out-of-time-ordered correlation functions (OTOCs), has lately received considerable attention. Rec…
Charge excitation dynamics in bosonic fractional Chern insulators
Xiao-Yu Dong, Adolfo G. Grushin, Johannes Motruk +1
The experimental realization of the Harper-Hofstadter model in ultra-cold atomic gases has placed fractional states of matter in these systems within reach---a fractional Chern ins…
Topology and edge modes in quantum critical chains
Ruben Verresen, Nick G. Jones, Frank Pollmann
We show that topology can protect exponentially localized, zero energy edge modes at critical points between one-dimensional symmetry protected topological phases. This is possible…
One-Dimensional Symmetry Protected Topological Phases and their Transitions
Ruben Verresen, Roderich Moessner, Frank Pollmann
We present a unified perspective on symmetry protected topological (SPT) phases in one dimension and address the open question of what characterizes their phase transitions. In the…