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11 papers · 1 filter
SU(2) U(1) Gauge Gravity
H. Dehnen, E. Hitzer
We propose a Lorentz-covariant Yang-Mills ``spin-gauge'' theory, where the function valued Pauli matrices play the role of a non-scalar Higgs-field. As symmetry group we choose $SU…
Induced gravity inflation in the SU(5) GUT
J. L. Cervantes-Cota, H. Dehnen
We investigate the cosmological consequences of a theory of induced gravity in which the scalar field is identified with the Higgs field of the first symmetry breaking of a mi\-ni\…
Perturbative Metric of Charged Black Holes in Quadratic Gravity
M. Campanelli, C. O. Lousto, J. Audretsch
We consider perturbative solutions to the classical field equations coming from a quadratic gravitational lagrangian in four dimensions. We study the charged, spherically symmetric…
Pre-Galaxy Formation: A Non-Linear Analysis of the Evolution of Cosmological Perturbations
Martin Schoen
A higher-order analysis of the evolution of cosmological perturbations in a Friedman universe is given by using the PMF method. The essence of the PMF approach is to choose a gauge…
The Dipole Coupling of Atoms and Light in Gravitational Fields
Karl-Peter Marzlin
The dipole coupling term between a system of N particles with total charge zero and the electromagnetic field is derived in the presence of a weak gravitational field. It is shown…
What is the reference frame of an accelerated observer?
K. -P. Marzlin
The general construction of extended refrence frames for noninertial observers in flat space is studied. It is shown that, if the observer moves inertially before and after an arbi…