New sources of ghost fields in $k$-essence theories for black-bounce solutions

Carlos F. S. Pereira, Ébano L. Martins, Denis C. Rodrigues +2

In the present study, we generalize the possible ghost field configurations within the framework of $k$-essence theory to the Simpson-Visser metric area function $\hat{I}{\pounds }^2=x^2+a^2$. Ou…