57,284 research outputs found
Protecting Intellectual Property in the Developing World: Next Stop—Thailand
This iBrief examines the U.S. strategy for strengthening the protection of intellectual property rights (IPRs) in Southeast Asia through the use of free trade agreements (FTAs). After briefly examining the U.S. methodology for strengthening IPRs outside the U.S., this iBrief predicts that the intellectual property provisions in the final text of the U.S.-Thailand FTA, which is currently being negotiated, will be very similar to the provisions in previous FTAs that the United States has negotiated with other developing countries
Visualizing Color Plasma Instabilities
I discuss recent advances in the understanding of non-equilibrium gauge field
dynamics in plasmas which have particle distributions which are locally
anisotropic in momentum space. In contrast to locally isotropic plasmas such
anisotropic plasmas have a spectrum of soft unstable modes which are
characterized by exponential growth of transverse (chromo)-magnetic fields at
short times. The long-time behavior of such instabilities depends on whether or
not the gauge group is abelian or non-abelian. I will report on recent
numerical simulations which attempt to determine the long-time behavior of an
anisotropic non-abelian plasma within hard-loop effective theory. For novelty I
will present an interesting method for visualizing the time-dependence of SU(2)
gauge field configurations produced during our numerical simulations.Comment: 10 pages, 5 figures. Contribution to Proceedings of Workshop on
Quark-Gluon-Plasma Thermalization, Vienna, Austria, Aug 10-12. For full
resolution images see
http://www.fias.uni-frankfurt.de/home/strickland/instability
Color octet scalars and high p_T four-jet events at the LHC
We study the effect of color octet scalars on the high transverse momenta four-jet cross section at the LHC. We consider both weak singlet and doublet scalars, concentrating on the case of small couplings to quarks. We find that a relatively early discovery at the LHC is possible for a range of scalar masses
Simplest miniversal deformations of matrices, matrix pencils, and contragredient matrix pencils
V. I. Arnold [Russian Math. Surveys 26 (2) (1971) 29-43] constructed a simple
normal form for a family of complex n-by-n matrices that smoothly depend on
parameters with respect to similarity transformations that smoothly depend on
the same parameters. We construct analogous normal forms for a family of real
matrices and a family of matrix pencils that smoothly depend on parameters,
simplifying their normal forms by D. M. Galin [Uspehi Mat. Nauk 27 (1) (1972)
241-242] and by A. Edelman, E. Elmroth, B. Kagstrom [Siam J. Matrix Anal. Appl.
18 (3) (1997) 653-692].Comment: 20 page
Low mass lepton pair production in hadron collisions
The hadroproduction of lepton pairs with mass and transverse momentum
can be described in perturbative QCD by the same partonic subprocesses as
prompt photon production. We demonstrate that, like prompt photon production,
lepton pair production is dominated by quark-gluon scattering in the region
. This leads to sensitivity to the gluon density in kinematical
regimes that are accessible both at collider and fixed target experiments while
eliminating the theoretical and experimental uncertainties present in prompt
photon production.Comment: Talk given by M. Klasen at the International Conference on the
Structure and Interactions of the Photon, PHOTON 99, Freiburg i. Brsg.,
Germany, May 23-27, 1999. To be published in the proceedings. 6 pages, 6
postscript figure
Experimental neutrino physics
The current experimental status of neutrino physics is reviewed. It contains
the evidences for a non-vanishing neutrino rest mass from neutrino oscillation
searches. In addition an outlook is given on determining the various mixing
matrix elements and mass differences more precisely with new experiments. Of
special interest is the value of the mixing angle \theta_{13} determining the
possibility of detecting leptonic CP violation in the future. The prospect for
absolute mass measurements using beta and double beta decay as well as
cosmological observations is presented.Comment: 11 pages, 11 figures, Inv. talk presented at the DPF 2004 meeting of
the APS, Riverside, Aug. 200
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