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Discrete Time Crystals: Rigidity, Criticality, and Realizations.
TLDR
A simple model for a one-dimensional discrete time crystal which explicitly reveals the rigidity of the emergent oscillations as the drive is varied is considered and a blueprint based upon a one dimensional chain of trapped ions is proposed.
Universal properties of many-body delocalization transitions
We study the dynamical melting of "hot" one-dimensional many-body localized systems. As disorder is weakened below a critical value these non-thermal quantum glasses melt via a continuous dynamical
Quantum oscillations from surface Fermi arcs in Weyl and Dirac semimetals.
TLDR
It is found that the open Fermi arcs participate in unusual closed magnetic orbits by traversing the bulk of the sample to connect opposite surfaces, and result in quantum oscillations that contain observable signatures of the topological character of the bulk Weyl semimetal.
Landau quantization and quasiparticle interference in the three-dimensional Dirac semimetal Cd₃As₂.
TLDR
Scanning tunnelling microscopy measurements at sub-kelvin temperatures and high magnetic fields on the II-V semiconductor Cd3As2.2 show that defects mostly influence the valence band, consistent with the observation of ultrahigh-mobility carriers in the conduction band.
Observation of a discrete time crystal
TLDR
The experimental observation of a discrete time crystal, in an interacting spin chain of trapped atomic ions, is presented, which opens the door to the study of systems with long-range spatio-temporal correlations and novel phases of matter that emerge under intrinsically non-equilibrium conditions.
Classification of Interacting Topological Floquet Phases in One Dimension
Periodic driving of a quantum system can enable new topological phases with no analog in static systems. In this paper we systematically classify one-dimensional topological and symmetry-protected
Thermoelectric transport signatures of Dirac composite fermions in the half-filled Landau level
The half filled Landau level is expected to be approximately particle-hole symmetric, which requires an extension of the Halperin-Lee-Read (HLR) theory of the compressible state observed at this
Engineering a p + ip superconductor: Comparison of topological insulator and Rashba spin-orbit-coupled materials
We compare topological insulator materials and Rashba coupled surfaces as candidates for engineering p+ip superconductivity. Specifically, in each type of material we examine 1) the limitations to
Chiral floquet phases of many-body localized bosons
Author(s): Po, HC; Fidkowski, L; Morimoto, T; Potter, AC; Vishwanath, A | Abstract: We construct and classify chiral topological phases in driven (Floquet) systems of strongly interacting bosons,
Scaling Theory of Entanglement at the Many-Body Localization Transition.
TLDR
An improved real space renormalization group approach is developed that enables numerical simulation of large system sizes and systematic extrapolation to the infinite system size limit.
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