109 citations
- Universidade Federal de PernambucoBR6 papers
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Showing 2003Show all
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quant-ph2003
Experimental observation of superluminal group velocities in bulk two-dimensional photonic bandgap crystals
D. R. Solli, C. F. McCormick, R. Y. Chiao +1
We have experimentally observed superluminal and infinite group velocities in bulk hexagonal two-dimensional photonic bandgap crystals with bandgaps in the microwave region. The gr…
cond-mat.stat-mech2003★ 19 cited
Stochastic description of the dynamics of the random-exchange Heisenberg chain
M. H. Vainstein, R. Morgado, F. A. Oliveira +2
We study the diffusion process in a Heisenberg chain with correlated spatial disorder, with a power spectrum in the momentum space behaving as , using a stochastic descript…