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6 papers · 1 filter
Nonlinear microwave response of epitaxial YBaCuO films of varying oxygen content on MgO substrates
M. A. Hein, R. G. Humphreys, P. J. Hirst +2
We have investigated the nonlinear microwave properties of electron-beam coevaporated YBaCuO films on MgO, using stripline resonators at 2.3 GHz and temperatures 1.7-80 K. The oxyg…
Classification of two-orbit varieties
S. Cupit-Foutou
A two-orbit variety is a normal complete complex algebraic variety on which a reductive complex algebraic group acts with exactly two orbits. The aim of this paper is to give the c…
Perspectives of superconducting MgB2 for microwave applications
Matthias A. Hein
We discuss the temperature, frequency, and power-dependent surface resistance of the boride superconductor MgB2 in relation to possible applications for passive microwave devices.…
New Developments in the Eight Vertex Model
Klaus Fabricius, Barry M. McCoy
We demonstrate that the Q matrix introduced in Baxter's 1972 solution of the eight vertex model has some eigenvectors which are not eigenvectors of the spin reflection operator and…
Hadronic event structure, power corrections and the strong coupling at LEP
D. Wicke
Infrared and collinear events shapes are suited to directly probe properties of hard QCD. They are traditionally used to measure the strong coupling and to test the gauge structure…
The F-valued points of the algebra of strongly regular functions of a Kac-Moody group
Claus Mokler
The algebra of strongly regular functions F[G_m] on a symmetrizable minimal Kac-Moody group G_m over a field F of characteristic zero has been introduced by V. Kac and D. Peterson…