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Theory of Doped Excitonic Insulators
Leon Balents, Chandra M. Varma
The theory of doped excitonic insulators is reinvestigated in light of recent experiments on hexaborides. For the appropriate valley-degenerate X_3,X_3' band structure, ``intra-val…
Orthogonality Catastrophes in Carbon Nanotubes
Leon Balents
Carbon nanotubes provide a remarkably versatile system in which to explore the effects of Coulomb interactions in one dimension. The most dramatic effects of strong electron-electr…
Dual Vortex Theory of Strongly Interacting Electrons: Non-Fermi Liquid to the (Hard) Core
Leon Balents, Matthew P. A. Fisher, Chetan Nayak
As discovered in the quantum Hall effect, a very effective way for strongly-repulsive electrons to minimize their potential energy is to aquire non-zero relative angular momentum.…
``X-Ray Edge'' Singularities in Nanotubes and Quantum Wires with Multiple Subbands
Leon Balents
Band theory predicts an inverse square root van Hove singularity in the tunneling density of states at the minimum energy of an unoccupied subband in a one-dimensional quantum wire…