159 citations · 606 across the 8 of their papers we have counts for
8 papers
Maximal symmetry and metric-affine f(R) gravity
Tuomas Multamäki, Jaakko Vainio, Iiro Vilja
The affine connection in a space-time with a maximally symmetric spatial subspace is derived using the properties of maximally symmetric tensors. The number of degrees of freedom i…
Energy-momentum complexes in f(R) theories of gravity
Tuomas Multamaki, Antti Putaja, Elias C. Vagenas +1
Despite the fact that modified theories of gravity, in particular the f(R) gravity models have attracted much attention in the last years, the problem of the energy localization in…
Constraining Newtonian stellar configurations in f(R) theories of gravity
T. Multamaki, I. Vilja
We consider general metric theories of gravity by solving the field equations in the presence of a spherical static mass distribution by analytical perturbative means. Expan…
Stellar configurations in f(R) theories of gravity
K. Henttunen, T. Multamaki, I. Vilja
We study stellar configurations and the space-time around them in metric theories of gravity. In particular, we focus on the polytropic model of the Sun in the $f(R)=R-μ^4/R…
Static spherically symmetric perfect fluid solutions in theories of gravity
T. Multamaki, I. Vilja
Static spherically symmetric perfect fluid solutions are studied in metric theories of gravity. We show that pressure and density do not uniquely determine ie. given…
Cosmological significance of one-loop effective gravity
D. Espriu, T. Multamaki, E. C. Vagenas
We study the one-loop effective action for gravity in a cosmological setup to determine possible cosmological effects of quantum corrections to Einstein theory. By considering the…