Results 21 to 30 of about 568,421 (287)
Higher-order topology in bismuth [PDF]
Nature Physics, 2018 The mathematical field of topology has become a framework in which to describe the low-energy electronic structure of crystalline solids. Typical of a bulk insulating three-dimensional topological crystal are conducting two-dimensional surface states. This constitutes the topological bulk–boundary correspondence.
Schindler, Frank +14 more
openaire +7 more sources
Gapless Symmetry-Protected Topological Order
Physical Review X, 2017 We introduce exactly solvable gapless quantum systems in d dimensions that support symmetry-protected topological (SPT) edge modes. Our construction leads to long-range entangled, critical points or phases that can be interpreted as critical condensates ...
Thomas Scaffidi +2 more
doaj +1 more source
New Journal of Physics, 2020 The extended Hubbard model with an attractive density–density interaction, positive pair hopping, or both, is shown to host topological phases, with a doubly degenerate entanglement spectrum and interacting edge spins.
Roman Rausch, Matthias Peschke
doaj +1 more source
From Majorana Fermions to Topological Order [PDF]
, 2012 We consider a system consisting of a 2D network of links between Majorana fermions on superconducting islands. We show that the fermionic Hamiltonian modeling this system is topologically-ordered in a region of parameter space. In particular we show that
A. D. B. K. Chakrabarti +3 more
core +2 more sources
Symmetry-protected adiabatic quantum transistors
New Journal of Physics, 2015 Adiabatic quantum transistors (AQT) allow quantum logic gates to be performed by applying a large field to a quantum many-body system prepared in its ground state, without the need for local control.
Dominic J Williamson, Stephen D Bartlett
doaj +1 more source
Topological quasiparticles and the holographic bulk-edge relation in 2+1D string-net models [PDF]
, 2014 String-net models allow us to systematically construct and classify 2+1D topologically ordered states which can have gapped boundaries. We can use a simple ideal string-net wavefunction, which is described by a set of F-matrices [or more precisely, a ...
Lan, Tian, Wen, Xiao-Gang
core +2 more sources
Topological Order Parameters for Interacting Topological Insulators [PDF]
Physical Review Letters, 2010 4 pages, 2 figures.
Wang, Zhong +2 more
openaire +3 more sources
New Journal of Physics, 2017 We study glide protected topological (GSPT) phases of interacting bosons and fermions in three spatial dimensions with certain on-site symmetries. They are crystalline SPT phases, which are distinguished from a trivial product state only in the presence ...
Fuyan Lu, Bowen Shi, Yuan-Ming Lu
doaj +1 more source
Boundary criticality of $PT$-invariant topology and second-order nodal-line semimetals
, 2020 For conventional topological phases, the boundary gapless modes are determined by bulk topological invariants. Based on developing an analytic method to solve higher-order boundary modes, we present $PT$-invariant $2$D topological insulators and $3$D ...
Dai, Jia-Xiao +4 more
core +1 more source