TY - JOUR
T1 - Impact of New Conformal Coupling on Spontaneous Scalarization of Neutron Stars
AU - Fauzi, M. I.
AU - Ramadhan, H. S.
AU - Sulaksono, A.
N1 - Publisher Copyright:
© Published under licence by IOP Publishing Ltd.
PY - 2019/10/30
Y1 - 2019/10/30
N2 - 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 [1]. 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.
AB - 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 [1]. 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.
UR - http://www.scopus.com/inward/record.url?scp=85076212629&partnerID=8YFLogxK
U2 - 10.1088/1742-6596/1354/1/012010
DO - 10.1088/1742-6596/1354/1/012010
M3 - Conference article
AN - SCOPUS:85076212629
SN - 1742-6588
VL - 1354
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
IS - 1
M1 - 012010
T2 - Conference on Theoretical Physics and Nonlinear Phenomena 2018, CTPNP 2018
Y2 - 2 July 2018 through 3 July 2018
ER -