Higgs-like pair amplitude dynamics in superconductor–quantum-dot hybrids

Higgs effects in top quark pair production †

Top quark production in pp̄ and e+e− collisions is enhanced by the exchange of a Higgs boson. The enhancement factors are calculated in the threshold region using the Greens function method. The complete postscript file of this preprint, including figures, is also available via anonymous ftp as /ttp95-25/ttp95-25.ps at ttpux2.physik.uni-karlsruhe.de (129.13.102.139), or via www at http://ttpux2....

Finite Gluon Fusion Amplitude in the Gauge-Higgs Unification

We show that the gluon fusion amplitude in the gauge-Higgs unification scenario is finite in any dimension regardless of its nonrenormalizability. This result is supported by the fact that the local operator describing the gluon fusion process is forbidden by the higher dimensional gauge invariance. We explicitly calculate the gluon fusion amplitude in an arbitrary dimensional gauge-Higgs unifi...

Phase-amplitude coupling characteristics in directly modulated quantum dot lasers

Dynamic amplitude-phase coupling in quantum-dot lasers

The well-known a-factor is a convenient measure to describe the magnitude of the amplitude-phase coupling of semiconductor lasers. But is the a-factor really a parameter? First-principle simulations of InGaAs quantum-dot lasers and amplifiers show that in spatially extended quantum-dot laser structures, the amplitude phase coupling is far from being a constant. Our computation of the a-factor d...

Higgs Dynamics during Inflation

With the discovery of the Higgs boson, and recent measurements from the BICEP2 collaboration indicating a tensor-to-scalar ratio of r = 0.20 −0.05[1], particle physics is now in an interesting position. The most precise measurements of the Higgs boson and top quark masses appear to show that the Electroweak vacuum is unstable under the fluctuations produced by inflation at the energy scale the ...