The scalar-tensor gravity as one of the alternative theories of general relativity has some interesting features. In the case of compact objects it predicts a unique phenomenon which is known as spontaneous scalarization, as shown by Damour and Espasito-Farese . This phenomenon does not appear within the general relativity. In this note, we investigate a new conformal coupling function i.e., A = 1 - ln[1 - 0.5β - 0)2] and its consequences in neutron stars. In the case of a polytropic equation of state, we have found that the spontaneous scalarization starts to appear when βc ≈ -4.35. We also found that for the realistic equation of states the βc depends on the composition and the stiffness of the equation of state.
|Journal||Journal of Physics: Conference Series|
|Publication status||Published - 30 Oct 2019|
|Event||Conference on Theoretical Physics and Nonlinear Phenomena 2018, CTPNP 2018 - Makassar, Indonesia|
Duration: 2 Jul 2018 → 3 Jul 2018