8 citations · 8 across the 1 of their papers we have counts for
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Period-doubling bifurcation in strongly anisotropic Bianchi I quantum cosmology
Michael Bachmann, Hans-Jurgen Schmidt
We solve the Wheeler-DeWitt equation for the minisuperspace of a cosmological model of Bianchi type I with a minimally coupled massive scalar field as source by generalizing th…
Wormholes and Flux Tubes in the 7D Gravity on the Principal Bundle with SU(2) Gauge Group as the Extra Dimensions
V. Dzhunushaliev, H. -J. Schmidt
Vacuum solutions for multidimensional gravity on the principal bundle with the SU(2) structural group as the extra dimensions are found and discussed. This generalizes the results…
Flux Tubes in Weyl Gravity
V. Dzhunushaliev, H. -J. Schmidt
The spherically symmetric solutions in Weyl gravity interacting with U(1) or SU(2) gauge fields are examined. It is shown that these solutions are conformally equivalent to an infi…
Nonminimal Derivative Couplings and Inflation in Generalized Theories of Gravity
S. Capozziello, G. Lambiase, H. -J. Schmidt
We study extended theories of gravity where nonminimal derivative couplings of the form are present in the Lagrangian. We show how and why the other coupling…
The classical solutions of two-dimensional gravity
Hans - Juergen Schmidt
The solutions of two-dimensional gravity following from a non-linear Lagrangian L = f(R) are classified, and their symmetry and singularity properties are described. Then a conform…