M. E. Rodrigues

most citedA regular metric does not ensure the regularity of spacetime

7 citations · 7 across the 1 of their papers we have counts for

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gr-qc2024

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 $Σ^{2} = x^{2} + a^{2}$ . Our…

gr-qc2023★ 7 cited

A regular metric does not ensure the regularity of spacetime

Manuel E. Rodrigues, Henrique A. Vieira

In this paper we try to clarify that a regular metric can generate a singular spacetime. Our work focuses on a static and spherically symmetric spacetime in which regularity exists…

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

A regular metric does not ensure the regularity of spacetime

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