159 citations · 250 across the 3 of their papers we have counts for
4 papers
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…
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…
Classical fields as coherent states and diffusion equations
Jukka Sirkka, Iiro Vilja
We present a derivation of the effect of the classical field configuration to the diffusion equations. Using the formalism of the thermo field dynamics we propose a systematic and…