The classical model of an oscillator linearly coupled to a string captures, for a low price in technique, many general features of more realistic models for describing a particle interacting with a field or an atom in an electromagnetic cavity. The scattering matrix and the asymptotic in and out-waves on the string can be computed exactly and the phenomenon of resonant scattering can be introdu...

We investigate the spectrum of the linear operator coming from the sine-Gordon equation linearized about a travelling kink-wave solution. Using various geometric techniques as well as some elementary methods from ODE theory, we find that the point spectrum of such an operator is purely imaginary provided the wave speed c of the travelling wave is not ±1. We then compute the essential spectrum o...

not provided INVITED SPEAKER ABSTRACTS Wednesday 2 May 2012 iii9 Downloaded from https://academic.oup.com/rheumatology/article-abstract/51/suppl_3/iii7/1836431/Essentials-in-rheumatology-disease-managementI34 by guest on 16 September 2017 I48. IMPROVING PATIENT MANAGEMENT: WHAT DO PATIENTS WANT? Gordon Duff Academic Unit of Rheumatology, University of Sheffield, Sheffield,

Citation Duda, Timothy F., Ying-Tsong Lin, Weifeng Gordon Zhang, Bruce D. Cornuelle, and Pierre F. J. Lermusiaux. "Computational Studies of Three-Dimensional Ocean Sound Fields in Areas of Complex Seafloor Topography and Active Ocean Dynamics." 10th International Conference on Theoretical and Computational Acoustics (April 2011). As Published http://www.gbv.de/dms/tib-ub-hannover/663982804.pdf ...

As we discussed earlier F (x, y) is nearly independent of the things that matter in propagation and we may ignore it in what follows. We also assume that the instantaneous polarization (direction) of ~ E(t, z) is independent of the position inside the beam (namely, it is independent of the x, y coordinates) thereby implying that we are treating the propagating field as a plane wave. This is kno...

We prove that the critical Maxwell-Klein Gordon equation on R is globally well-posed for smooth initial data which are small in the energy. This reduces the problem of global regularity for large, smooth initial data to precluding concentration of energy.

Using combinatorial properties of complex reflection groups we show that if the group W is different from the wreath product Sn ≀ Z/mZ and the binary tetrahedral group (labelled G(m, 1, n) and G4 respectively in the Shephard-Todd classification), then the generalised Calogero-Moser space Xc associated to the centre of the rational Cherednik algebra H0,c(W ) is singular for all values of the par...

We classify the variety of low-energy supersymmetric signatures that can be probed at future colliders. We focus on phenomena associated with the minimal supersymmetric extension of the Standard Model. The structure of the supersymmetry-breaking introduces additional model assumptions. The approaches considered here are supergravity-mediated and gauge-mediated supersymmetry-breaking. Alternativ...

The past academic literature on tax policy has focused almost entirely on the analysis of tax structures in the richest countries, particularly the U.S. Overall the optimal tax models explain reasonably well the observed tax policies in these countries. As summarized in Gordon (2000), for example, past theoretical work suggests that taxes on consumption or labor income should dominate use of ca...

Given a curve C of genus 2 defined over a field k of characteristic different from 2, with Jacobian variety J , we show that the two-coverings corresponding to elements of a large subgroup of H ` Gal(k/k), J [2](k) ́ (containing the Selmer group when k is a global field) can be embedded as intersection of 72 quadrics in P k , just as the Jacobian J itself. Moreover, we actually give explicit equ...