Results 1 to 10 of about 176,214 (315)

Nondissipative drag conductance as a topological quantum number [PDF]

open access: greenPhysical Review B, 2001
4 pages, no figure. Title modified and significant revision made to the text.
Kun Yang, A. H. MacDonald
core   +5 more sources

One-half topological number in entangled quantum physics [PDF]

open access: greenPhysical Review B, 2023
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

Polarization as a topological quantum number in graphene [PDF]

open access: greenPhysical Review B, 2014
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

open access: green, 1996
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]

open access: greenPhysical Review A, 2012
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]

open access: greenPhysical Review B, 2011
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]

open access: yesEntropy
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]

open access: bronzeCommunications in Number Theory and Physics, 2013
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

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