# Extra Force in Brane Worlds

@article{Youm2000ExtraFI, title={Extra Force in Brane Worlds}, author={Donam Youm}, journal={Physical Review D}, year={2000}, volume={62}, pages={084002} }

By carefully analyzing the geodesic motion of a test particle in the bulk of brane worlds, we identify an extra force which is recognized in spacetime of one lower dimensions as a non-gravitational force acting on the particle. Such extra force acts on the particle in such a way that the conventional particle mechanics in one lower dimensions is violated, thereby hinting at the higher-dimensional origin of embedded spacetime in the brane world scenario. We obtain the explicit equations…

## 59 Citations

### Null Geodesics in Brane World Universe

- Physics
- 2001

We study null bulk geodesic motion in the brane world cosmology in the RS2 scenario and in the static universe in the bulk of the charged topological AdS black hole. We obtain equations describing…

### On extra forces from large extra dimensions

- Physics
- 2007

The motion of a classical test particle moving on a four-dimensional (4D) brane embedded in an nD bulk is studied in which the brane is allowed to fluctuate along the extra dimensions. It is shown…

### 2 Null Bulk Geodesics in the RS 2 Brane World Cosmology

- Physics
- 2001

We study null bulk geodesic motion in the brane world cosmology in the RS2 scenario and in the static universe in the bulk of the charged topological AdS black hole. We obtain equations describing…

### Instability of the Randall-Sundrum Model and Exact Bulk Solutions

- Physics
- 2001

Five dimensional geodesic equation is used to study the gravitational force acted on a test particle in the bulk of the Randall-Sundrum two-brane model. This force could be interpreted as the…

### The Principle of least action for test particles in a four-dimensional spacetime embedded in 5D

- Mathematics, Physics
- 2008

It is well known that, in the five-dimensional scenario of braneworld and space–time-mass theories, geodesic motion in 5D is observed to be non-geodesic in 4D. Usually, the discussion is purely…

### Extra force from an extra dimension. Comparison between brane theory, STM and other approaches

- Physics
- 2003

We investigate the question of how an observer in 4D perceives the five-dimensional geodesic motion. We consider the interpretation of null and non-null bulk geodesics in the context of brane theory,…

### ON THE CLASSICAL CONFINEMENT OF TEST PARTICLES TO A THIN 3-BRANE IN THE ABSENCE OF NON-GRAVITATIONAL FORCES

- Physics
- 2008

The classical confinement condition of test particles to a brane universe in the absence of non-gravitational forces is transformed using the Hamilton–Jacobi formalism. The transformed condition…

### On the extra force in brane world scenario

- Physics
- 2014

In the study of the dynamics in a 5D bulk from brane world scenario, an extra force with abnormal properties was detected (cf. [D. Youm, Extra force in brane worlds, Phys. Rev. D62 (2000) 084002; D.…

### A dynamical systems analysis of motion in the bulk with respect to the brane

- Physics
- 2012

In this paper, we investigate the geodesic motion for massive and massless particles in a five-dimensional bulk using dynamical systems analysis, where the system is studied with respect to the brane…

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