# Regular braneworlds with nonlinear bulk-fluids

@inproceedings{Antoniadis2021RegularBW, title={Regular braneworlds with nonlinear bulk-fluids}, author={Ignatios Antoniadis and Spiros Cotsakis and I. Klaoudatou}, year={2021} }

We construct a regular five-dimensional brane-world with localised gravity on a flat 3-brane. The matter content in the bulk is parametrised by an analog of a non-linear fluid with equation of state p = γρλ between the ‘pressure’ p and the ‘density’ ρ dependent on the 5th dimension. For γ negative and λ > 1, the null energy condition is satisfied and the geometry is free of singularities within finite distance from the brane, while the induced four-dimensional Planck mass is finite. ∗antoniad…

## 8 Citations

### Brane-world asymptotics in a nonlinear fluid bulk

- Mathematics
- 2021

We present recent results on the asymptotics of a brane-world that consists of a flat 3brane embedded in a five-dimensional bulk. The bulk matter is modelled by a fluid that satisfies a nonlinear…

### Self-tuning of the cosmological constant in brane-worlds with $P(X,\phi)$

- Physics
- 2022

We revisit the idea of self-tuning the observed cosmological constant to a vanishing value and promote it to a selection criterion of brane-world models, in which our Universe is described by a…

### Localizing branes with bifurcating bulks

- MathematicsThe European Physical Journal C
- 2022

We study the problem of evolution of bulk 5-fluids having an embedded braneworld with a flat, de Sitter, or anti-de Sitter geometry. We introduce new variables to express the Einstein equations as a…

### Impact of compactlike and asymmetric configurations of thick branes on the scalar–tensor representation of $$f\left( R,T\right) $$ gravity

- MathematicsThe European Physical Journal C
- 2022

In this work we study braneworld models in generalized $$f\left( R,T\right) $$
f
R
,
T
gravity theories where the action depends on a function of the Ricci scalar R and the trace of the…

### Superluminal Geometrodynamics of Braneworld Hyperdrive via Brane-Bulk Interaction

- Physics
- 2021

The idea of superluminal travel in the framework of General Relativity has firstly been introduced by Miguel Alcubierre. Instead of puncturing through a hole in spacetime as in a wormhole, this…

### 100 years of mathematical cosmology: Models, theories and problems, Part B

- PhysicsPhilosophical Transactions of the Royal Society A
- 2022

We continue our overview of mathematical cosmology with a survey of the third and fourth periods of the development of the subject. The first Part includes the first two periods and is published…

### Regular braneworlds with bulk fluids

- Mathematics
- 2021

We review studies on the singularity structure and asymptotic analysis of a 3-brane (flat or curved) embedded in a five-dimensional bulk filled with a ‘perfect fluid’ with an equation of state p =…

### Brane-world singularities and asymptotics of five-dimensional bulk fluids

- MathematicsPhilosophical Transactions of the Royal Society A
- 2022

We review studies on the singularity structure and asymptotic analysis of a 3-brane (flat or curved) embedded in a five-dimensional bulk filled with a ‘perfect fluid’ with an equation of state p=γρ,…

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