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4 papers · 2 filters
Dirac fields in f(R)-gravity with torsion
Luca Fabbri, Stefano Vignolo
We study f(R)-gravity with torsion in presence of Dirac massive fields. Using the Bianchi identities, we formulate the conservation laws of the theory and we check the consistency…
Testing metric-affine f(R)-gravity by relic scalar gravitational waves
S. Capozziello, R. Cianci, M. De Laurentis +1
We discuss the emergence of scalar gravitational waves in metric-affine f(R)-gravity. Such a component allows to discriminate between metric and metric-affine theories The intrinsi…
The Cauchy problem for metric-affine f(R)-gravity in presence of a Klein-Gordon scalar field
S. Capozziello, S. Vignolo
We study the initial value formulation of metric-affine f(R)-gravity in presence of a Klein-Gordon scalar field acting as source of the field equations. Sufficient conditions for t…
Time-dependent extra dimension and higher-dimensional modifications to the matter content in FRW spacetimes
M. La Camera
In this work we suggest that higher-dimensional modifications to the matter content in FRW spacetimes can be obtained not only, as first considered by Ponce de Leon, referring to "…