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cond-mat.str-el1999
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…
cond-mat.str-el1999
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…