3,270 research outputs found
Reconstructing the electron in a fractionalized quantum fluid
The low energy physics of the fractional Hall liquid is described in terms
quasiparticles that are qualitatively distinct from electrons. We show,
however, that a long-lived electron-like quasiparticle also exists in the
excitation spectrum: the state obtained by the application of an electron
creation operator to a fractional quantum Hall ground state has a non-zero
overlap with a complex, high energy bound state containing an odd number of
composite-fermion quasiparticles. The electron annihilation operator similarly
couples to a bound complex of composite-fermion holes. We predict that these
bound states can be observed through a conductance resonance in experiments
involving a tunneling of an external electron into the fractional quantum Hall
liquid. A comment is made on the origin of the breakdown of the Fermi liquid
paradigm in the fractional hall liquid.Comment: 5 pages, 2 figure
CS 241-02: Computer Programming II
A continuation of CS240. The emphasis is on data abstraction and object-oriented programming. Prerequisite: CS240
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