We study the extended scalar-tensor Gauss-Bonnet. First, we review a model in which there is a coupling between the Gauss-Bonnet scalar and the scalar field. Then we extend the model to a hybrid model with two scalar fields. We study the conditions under which the solutions are unstable and spontaneous scalarization occurs. We show that the coupling coefficients in the hybrid state and in the presence of a scalar field are asymptotically the same but the sufficient condition of instability is different between these two models.
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Sajjadi, S. M. S. and Mohseni Sadjadi, H. (2023). Spontaneous scalarization in Gauss-Bonnet black hole and hybrid fields. Journal of Research on Many-body Systems, 13(1), 63-71. doi: 10.22055/jrmbs.2022.17924
MLA
Sajjadi, S. M. S. , and Mohseni Sadjadi, H. . "Spontaneous scalarization in Gauss-Bonnet black hole and hybrid fields", Journal of Research on Many-body Systems, 13, 1, 2023, 63-71. doi: 10.22055/jrmbs.2022.17924
HARVARD
Sajjadi, S. M. S., Mohseni Sadjadi, H. (2023). 'Spontaneous scalarization in Gauss-Bonnet black hole and hybrid fields', Journal of Research on Many-body Systems, 13(1), pp. 63-71. doi: 10.22055/jrmbs.2022.17924
CHICAGO
S. M. S. Sajjadi and H. Mohseni Sadjadi, "Spontaneous scalarization in Gauss-Bonnet black hole and hybrid fields," Journal of Research on Many-body Systems, 13 1 (2023): 63-71, doi: 10.22055/jrmbs.2022.17924
VANCOUVER
Sajjadi, S. M. S., Mohseni Sadjadi, H. Spontaneous scalarization in Gauss-Bonnet black hole and hybrid fields. Journal of Research on Many-body Systems, 2023; 13(1): 63-71. doi: 10.22055/jrmbs.2022.17924
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