Condensed Matter Theory

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Integrable sigma models and perturbed coset models

(2001)

Suppression of weak localization effects in low-density metallic 2D holes

(2001)

Authors:

AP Mills, AP Ramirez, XPA Gao, LN Pfeiffer, KW West, SH Simon

Communication in a disordered world

Physics Today 54:9 (2001) 38-43

Authors:

SH Simon, AL Moustakas, M Stoytchev, H Safar

Abstract:

The effect of scattering on the information transfer rate for cell phones and wireless microwave communication devices was analyzed. The antennas in the array measures the relative phase and amplitude of the signal arriving from the particular source and then transmits with the same relative amplitude but with opposite phase. It is found that the scattering instead of decreasing the efficiency, increases the information transfer rate for wireless communication devices.

Compact Antenna Arrays for MIMO Applications

Institute of Electrical and Electronics Engineers (IEEE) 3 (2001) 708-711

Authors:

Marin Stoytchev, Hugo Safar, Aris L Moustakas, Steve Simon

Lattice Boltzmann simulations of liquid crystal hydrodynamics

Physical Review E Statistical Physics Plasmas Fluids and Related Interdisciplinary Topics 63:5 (2001)

Authors:

C Denniston, E Orlandini, JM Yeomans

Abstract:

We describe a lattice Boltzmann algorithm to simulate liquid crystal hydrodynamics. The equations of motion are written in terms of a tensor order parameter. This allows both the isotropic and the nematic phases to be considered. Backflow effects and the hydrodynamics of topological defects are naturally included in the simulations, as are non-Newtonian flow properties such as shear thinning and shear banding. 漏 2001 The American Physical Society.