Nondissipative drag conductance as a topological quantum number [PDF]
4 pages, no figure. Title modified and significant revision made to the text.
Kun Yang, A. H. MacDonald
core +5 more sources
Scattering formula for the topological quantum number of a disordered multimode wire [PDF]
8 pages, 3 figures, this is the final, published ...
Ion Cosma Fulga +3 more
core +9 more sources
One-half topological number in entangled quantum physics [PDF]
A topological phase can be engineered in quantum physics from the Bloch sphere of a spin-1/2 showing an hedgehog structure as a result of a radial magnetic field. We elaborate on a relation between the formation of an entangled wavefunction at one pole, in a two-spins model, and an interesting pair of one-half topological numbers.
Karyn Le Hur
openalex +4 more sources
Quantum Hall effect and the topological number in graphene [PDF]
4 pages, 10 ...
Yasumasa Hasegawa, Mahito Kohmoto
openalex +5 more sources
Polarization as a topological quantum number in graphene [PDF]
Graphene, with its quantum Hall topological (Chern) number reflecting the massless Dirac particle, is shown to harbor yet another topological quantum number. This is obtained by combining Streda's general formula for the polarization associated with a second topological number in the Diophantine equation for the Hofstadter problem, and the adiabatic ...
Hideo Aoki, Yasuhiro Hatsugai
openalex +4 more sources
Topological quantum field theory and crossing number
7 pages, latex, no figure, correct some word ...
Zhu‐Jun Zheng +3 more
openalex +5 more sources
Rydberg-atom quantum simulation and Chern-number characterization of a topological Mott insulator [PDF]
Revtex4 file, color figures. Final journal version.
Alexandre Dauphin +2 more
+8 more sources
Topological quantum number and critical exponent from conductance fluctuations at the quantum Hall plateau transition [PDF]
The conductance of a two-dimensional electron gas at the transition from one quantum Hall plateau to the next has sample-specific fluctuations as a function of magnetic field and Fermi energy. Here we identify a universal feature of these mesoscopic fluctuations in a Corbino geometry: The amplitude of the magnetoconductance oscillations has an e^2/h ...
Ion Cosma Fulga +3 more
openalex +6 more sources
Phase-Space Approach for Topological Phase Transitions in Silicene [PDF]
Silicene is a two-dimensional silicon monolayer with a band gap caused by relatively strong spin–orbit coupling. This band gap can be steered using a vertical electric field.
Maciej Kalka +2 more
doaj +2 more sources
Bernoulli number identities from quantum field theory and topological string theory [PDF]
We present a new method for the derivation of convolution identities for finite sums of products of Bernoulli numbers. Our approach is motivated by the role of these identities in quantum field theory and string theory. We first show that the Miki identity and the Faber-Pandharipande-Zagier (FPZ) identity are closely related, and give simple unified ...
Gerald V. Dunne, Christian Schubert
openalex +6 more sources

