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31 papers · 1 filter
Electrodynamics of metallic photonic crystals and problem of left-handed materials
A. L. Pokrovsky, A. L. Efros
An exact analytical theory of the electromagnetic waves in metallic photonic crystals with a small volume fraction of a metal is presented. It is shown that there are waves with a…
Collisional Cascades in Planetesimal Disks I. Stellar Flybys
Scott J. Kenyon, Benjamin C. Bromley
We use a new multiannulus planetesimal accretion code to investigate the evolution of a planetesimal disk following a moderately close encounter with a passing star. The calculatio…
On Gauge Invariance of Noncommutative Chern-Simons Theories
Guang-Hong Chen, Yong-Shi Wu
Motivated by possible applications to condensed matter systems, in this paper we construct U(N) noncommutative Chern-Simons (NCCS) action for a disc and for a double-layer geometry…
Measuring information spatial densities
Michele Bezzi, Ines Samengo, Stefan Leutgeb +1
A novel definition of the stimulus-specific information is presented, which is particularly useful when the stimuli constitute a continuous and metric set, as for example, position…
Random Resonators and Prelocalized Modes in Disordered Dielectric Films
V. M. Apalkov, M. E. Raikh, B. Shapiro
Areal density of disorder-induced resonators with a high quality factor, , in a film with fluctuating refraction index is calculated theoretically. We demonstrate that for…
Geometry of Generic Isolated Horizons
Abhay Ashtekar, Christopher Beetle, Jerzy Lewandowski
Geometrical structures intrinsic to non-expanding, weakly isolated and isolated horizons are analyzed and compared with structures which arise in other contexts within general rela…