# Mass radius relation of compact stars in the braneworld

## Abstract

The braneworld scenario, based on the fact that the four dimension space-time is a hyper-surface of a five dimensional manifold, was shown to deal in a satisfactory way with the hierarchy problem. In this work we study macroscopic stellar properties of compact stars from the braneworld point of view. Using neutron star equations of state, we test the possibility of extra dimensions by solving the brane Tolman-Oppenheimer-Volkoff equations obtained for three kinds of possible compact objects: hadronic, hybrid and quark stars. By comparing the macroscopic solutions with observational constraints, we establish a brane tension lower limit and the value for which the Tolman-Oppenheimer-Volkoff equations in the braneworld converge to the usual Tolman-Oppenheimer-Volkoff equations.

- Authors:

- Depto de Física, CFM, Universidade Federal de Santa Catarina, Florianópolis, SC CP-476, CEP 88.040-900 (Brazil)
- Universidade Federal da Fronteira Sul, Chapecó, SC, CEP 89.812-000 (Brazil)

- Publication Date:

- OSTI Identifier:
- 22373381

- Resource Type:
- Journal Article

- Resource Relation:
- Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2014; Journal Issue: 08; Other Information: Country of input: International Atomic Energy Agency (IAEA)

- Country of Publication:
- United States

- Language:
- English

- Subject:
- 79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; BRANES; EQUATIONS OF STATE; MATHEMATICAL SOLUTIONS; M-THEORY; NEUTRON STARS; SPACE-TIME; SURFACES

### Citation Formats

```
Castro, Luis B., Menezes, Débora P., and Alloy, Marcelo D., E-mail: luis.castro@pgfsc.ufsc.br, E-mail: alloy@uffs.edu.br, E-mail: debora.p.m@ufsc.br.
```*Mass radius relation of compact stars in the braneworld*. United States: N. p., 2014.
Web. doi:10.1088/1475-7516/2014/08/047.

```
Castro, Luis B., Menezes, Débora P., & Alloy, Marcelo D., E-mail: luis.castro@pgfsc.ufsc.br, E-mail: alloy@uffs.edu.br, E-mail: debora.p.m@ufsc.br.
```*Mass radius relation of compact stars in the braneworld*. United States. doi:10.1088/1475-7516/2014/08/047.

```
Castro, Luis B., Menezes, Débora P., and Alloy, Marcelo D., E-mail: luis.castro@pgfsc.ufsc.br, E-mail: alloy@uffs.edu.br, E-mail: debora.p.m@ufsc.br. Fri .
"Mass radius relation of compact stars in the braneworld". United States.
doi:10.1088/1475-7516/2014/08/047.
```

```
@article{osti_22373381,
```

title = {Mass radius relation of compact stars in the braneworld},

author = {Castro, Luis B. and Menezes, Débora P. and Alloy, Marcelo D., E-mail: luis.castro@pgfsc.ufsc.br, E-mail: alloy@uffs.edu.br, E-mail: debora.p.m@ufsc.br},

abstractNote = {The braneworld scenario, based on the fact that the four dimension space-time is a hyper-surface of a five dimensional manifold, was shown to deal in a satisfactory way with the hierarchy problem. In this work we study macroscopic stellar properties of compact stars from the braneworld point of view. Using neutron star equations of state, we test the possibility of extra dimensions by solving the brane Tolman-Oppenheimer-Volkoff equations obtained for three kinds of possible compact objects: hadronic, hybrid and quark stars. By comparing the macroscopic solutions with observational constraints, we establish a brane tension lower limit and the value for which the Tolman-Oppenheimer-Volkoff equations in the braneworld converge to the usual Tolman-Oppenheimer-Volkoff equations.},

doi = {10.1088/1475-7516/2014/08/047},

journal = {Journal of Cosmology and Astroparticle Physics},

number = 08,

volume = 2014,

place = {United States},

year = {Fri Aug 01 00:00:00 EDT 2014},

month = {Fri Aug 01 00:00:00 EDT 2014}

}