Mechanism to control the internal structure of thick brane

Abstract

In this work we study braneworlds generated by several scalar fields. The investigation describes the necessary formalism to examine models and evaluate the conditions for the stability of the gravitational sector under linear perturbations. In particular, we develop a mechanism that help us investigate distinct situations controlled by two and by three fields, focusing on how the fields can be used to modify the internal structure of the brane.

8 pages, 10 figures. To appear in EPJC as a Letter

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• Hybrid branes from split kinks
• Spontaneous branes formation
• Analytical solutions for Maxwell-scalar system on radially symmetric spacetimes
• Formation and evolution of a 2-brane structure in multidimensional $f(R)$ gravity
• Compact, long-range and vacuumless regimes controlled by scalar fields in two-dimensional flat and five-dimensional warped geometries
• New brane-like solutions in modified four-dimensional Einstein-Gauss-Bonnet gravity