Constraining alternative gravity theories using the solar neutrino problem

The neutrino flavor oscillation is studied in some classes of alternative gravity theories in a plane specified by $\theta =\pi /2$, exploiting the spherical symmetry and general equations for oscillation phases are given. We first calculate the phase in a general static spherically symmetric model and then we discuss some spherically symmetric solutions in alternative gravity theories. Among them we discuss the effect of cosmological term in Schwarzschild-(anti)de Sitter solution, which is the vacuum solution in $F(R)$ theory, the effect of charge and Gauss-Bonnet coupling parameter on the oscillation phase is presented. Finally we discuss a charged solution with spherical symmetry in $F(R)$ theory and also its implication to the oscillation phase. We calculate the oscillation length and transition probability in these spherically symmetric spacetime and have presented a graphical representation for transition probability with various choice for parameters in our theory. From this we could constrain parameters appearing in these alternative theories using standard solar neutrino results.

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