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gr-qc2023★ 2 cited
Propagation of Gravitational Waves in a Dynamical Wormhole Background for Two-scalar Einstein-Gauss-Bonnet Theory
E. Elizalde, Shin'ichi Nojiri, S. D. Odintsov +1
In this work, we propose a model of Einstein--Gauss-Bonnet gravity coupled with two scalar fields. The two scalar fields are considered to be ``frozen'' or they become non-dynamica…
gr-qc2023★ 1 cited
Stable gravastar with large surface redshift in Einstein's gravity with two scalar fields
Shin'ichi Nojiri, G. G. L. Nashed
We propose a class of models, in which stable gravastar with large surface redshift becomes a solution. In recent decades, gravastars have become a plausible substitute for black h…
hep-th2023★ 1 cited
Wormhole solution free of ghosts in Einstein's gravity with two scalar fields
Shin'ichi Nojiri, G. G. L. Nashed
In this paper, we construct models that admit the traversable wormhole geometries in the framework of Einstein's gravity with two scalar fields. As well known, the energy condition…