Results 41 to 50 of about 1,200,672 (302)

Polarization singularities in the clear sky [PDF]

, 2004
Ideas from singularity theory provide a simple account of the pattern of polarization directions in daylight. The singularities (two near the Sun and two near the anti-Sun) are points in the sky where the polarization line pattern has index +1/2 and the ...
Berry, M.V., Dennis, M.R., Lee, Jr, R.L.
core   +1 more source

Higher Order Polars of Quasi-Ordinary Singularities [PDF]

International Mathematics Research Notices, 2020
Abstract A quasi-ordinary polynomial is a monic polynomial with coefficients in the power series ring such that its discriminant equals a monomial up to unit. In this paper, we study higher derivatives of quasi-ordinary polynomials, also called higher order polars. We find factorizations of these polars.
García Barroso, Evelia Rosa, Gwozdziewicz, Janusz   +1 more
openaire   +3 more sources

Observing polarization patterns in the collective motion of nanomechanical arrays

Nature Communications, 2022
Coupled nanomechanical resonator arrays serve as model systems to study collective dynamical phenomena. Doster et al. introduce a two-dimensional array of pillar resonators encoding a mechanical polarization degree of freedom for analyzing polarization ...
Juliane Doster, Tirth Shah, Thomas Fösel, Philipp Paulitschke, Florian Marquardt, Eva M. Weig   +5 more
doaj   +1 more source

Classical and Quantum Strings in plane waves, shock waves and spacetime singularities: synthesis and new results [PDF]

, 2003
Key issues of classical and quantum strings in gravitational plane waves, shock waves and spacetime singularities are synthetically understood. This includes the string mass and mode number excitations, energy-momentum tensor, scattering amplitudes ...
Sanchez, Norma G.
core   +3 more sources

Polarization resolved angular patterns in nematic liquid crystal cells [PDF]

, 2006
We study the angular structure of polarization of light transmitted through a nematic liquid crystal (NLC) cell by theoretically analyzing the polarization state as a function of the incidence angles.
Alexei D Kiselev, Azzam R M A, Berreman D W, Berry M V, Berry M V, Born M, Brett L H, Chigrinov V G, de Gennes P G, Freund I, Hajnal J V, Kiselev A D, Kiselev A D Soskin M S Buinyi I A Vovk R G, Konukhov A I, Lekner J, Lekner J, Mokhun A I, Nye J F, Smith D O, Soskin M S, Yakovlev D A, Yakovlev D A, Yariv A, Yeh P   +23 more
core   +2 more sources

On Geometric Phase from Pure Projections [PDF]

, 1998
The geometric phase is usually treated as a quantity modulo 2\pi, a convention carried over from early work on the subject. The results of a series of optical interference experiments involving polarization of light, done by the present author (reviewed ...
Berry M. V., Bhandari R., Bhandari R., Bhandari R., Bhandari R., Bhandari R., Pancharatnam S., Pancharatnam S., Rejendra Bhandari, Tompkin W. R.   +9 more
core   +2 more sources

Sharp focusing of beams with V-point polarization singularities

Компьютерная оптика, 2021
It is theoretically and numerically shown that when tightly focusing an n-th order vector light field that has the central V-point (at which the linear polarization direction is undetermined), the polarization singularity index n, and a "flower"-shaped ...
V.V. Kotlyar , A.G. Nalimov, S.S. Stafeev, A.A. Kovalev   +3 more
doaj   +1 more source

Geometry and Statistics of Cosmic Microwave Polarization [PDF]

, 1999
Geometrical and statistical properties of polarization of CMB are analyzed. Singular points of the vector field which describes CMB polarization are found and classified. Statistical distribution of the singularities is studied.
A. D. DOLGOV, A. G. DOROSHKEVICH, Basko M. A., D. I. NOVIKOV, I. D. NOVIKOV, Kamionkowski M., Kamionkowski M., Polnarev A. G., Zaldarriaga M.   +8 more
core   +3 more sources

Singularities in Speckled Speckle [PDF]

, 2007
Speckle patterns produced by random optical fields with two (or more) widely different correlation lengths exhibit speckle spots that are themselves highly speckled.
Baranova, Berry, Berry, Born, Cartwright, David A. Kessler, Dennis, Dennis, Dennis, Freund, Freund, Freund, Freund, Freund, Freund, Goodman, Halperin, Isaac Freund, Kessler, Kessler, Longuet-Higgins, Nye, Nye, Nye, Rice   +24 more
core   +4 more sources

Persistent anti-brane singularities [PDF]

, 2012
Anti-D-branes inserted in warped throat geometries (supported by fluxes that carry D-brane charges) develop unphysical singularities. It has been argued that these singularities could be resolved when one goes beyond the linearized approximation or ...
A Dymarsky, B Janssen, Daniel Junghans, G Giecold, H Lin, I Bena, I Bena, I Bena, I Bena, I Bena, I Bena, Iosif Bena, IR Klebanov, IR Klebanov, J Blaback, J Blaback, J Blaback, K Pilch, M Cvetič, Marco Zagermann, O DeWolfe, P McGuirk, RC Myers, S Kachru, S Kachru, S Kuperstein, S Massai, SB Giddings, Stanislav Kuperstein, Thomas Van Riet, Timm Wrase, V Balasubramanian, V Borokhov   +32 more
core   +5 more sources