Abstract

On the basis of the 4D momentum, the influence of quintessence on the gravitational frequency shift and the deflection of light are examined in modified Schwarzschild space. We find that the frequency of a photon depends on the state parameter of the quintessence w q: the frequency increases for −1<w q<−1/3 and decreases for −1/3<w q<0. Meanwhile, we adopt an integral power number a (a=3ω q+2) to solve the orbital equation of photon. The photon’s potentials become higher with the decrease of ω q. The behavior of the bending light sensitively depends on the state parameter ω q. In particular, for the case of ω q=−1, there is no influence on the deflection of light by quintessence. Furthermore, according to the H-masers of the GP-A redshift experiment and long-baseline interferometry, the constraints on the quintessence field in the solar system are presented here.

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