# Localization and mass spectra of various matter fields on scalar-tensor brane

## Abstract

Recently, a new scalar-tensor braneworld model was presented in [http://dx.doi.org/10.1103/PhysRevD.86.127502]. It not only solves the gauge hierarchy problem but also reproduces a correct Friedmann-like equation on the brane. In this new model, there are two different brane solutions, for which the mass spectra of gravity on the brane are the same. In this paper, we investigate localization and mass spectra of various bulk matter fields (i.e., scalar, vector, Kalb-Ramond, and fermion fields) on the brane. It is shown that the zero modes of all the matter fields can be localized on the positive tension brane under some conditions, and the mass spectra of each kind of bulk matter field for the two brane solutions are different except for some special cases, which implies that the two brane solutions are not physically equivalent. When the coupling constants between the dilaton and bulk matter fields take special values, the mass spectra for both solutions are the same, and the scalar and vector zero modes are localized on the negative tension brane, while the KR zero mode is still localized on the positive tension brane.

- Authors:

- School of Information Science and Engineering, Lanzhou University, Lanzhou 730000, People’s Republic of (China)
- (China)
- Department of Applied Physics, Shandong University of Science and Technology, Qingdao 266590, People’s Republic of (China)
- Institute of Theoretical Physics, Lanzhou University, Lanzhou 730000, People’s Republic of (China)

- Publication Date:

- Sponsoring Org.:
- SCOAP3, CERN, Geneva (Switzerland)

- OSTI Identifier:
- 22454520

- Resource Type:
- Journal Article

- Resource Relation:
- Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2015; Journal Issue: 03; Other Information: PUBLISHER-ID: JCAP03(2015)014; OAI: oai:repo.scoap3.org:9513; Article funded by SCOAP3. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 License. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.; Country of input: International Atomic Energy Agency (IAEA)

- Country of Publication:
- United States

- Language:
- English

- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; BRANES; COSMOLOGY; FERMIONS; GRAVITATION; MASS SPECTRA; MATHEMATICAL SOLUTIONS; M-THEORY; SCALAR FIELDS; VECTOR FIELDS

### Citation Formats

```
Xie, Qun-Ying, Institute of Theoretical Physics, Lanzhou University, Lanzhou 730000, People’s Republic of, Zhao, Zhen-Hua, Zhong, Yi, Yang, Jie, and Zhou, Xiang-Nan.
```*Localization and mass spectra of various matter fields on scalar-tensor brane*. United States: N. p., 2015.
Web. doi:10.1088/1475-7516/2015/03/014.

```
Xie, Qun-Ying, Institute of Theoretical Physics, Lanzhou University, Lanzhou 730000, People’s Republic of, Zhao, Zhen-Hua, Zhong, Yi, Yang, Jie, & Zhou, Xiang-Nan.
```*Localization and mass spectra of various matter fields on scalar-tensor brane*. United States. doi:10.1088/1475-7516/2015/03/014.

```
Xie, Qun-Ying, Institute of Theoretical Physics, Lanzhou University, Lanzhou 730000, People’s Republic of, Zhao, Zhen-Hua, Zhong, Yi, Yang, Jie, and Zhou, Xiang-Nan. Tue .
"Localization and mass spectra of various matter fields on scalar-tensor brane". United States.
doi:10.1088/1475-7516/2015/03/014.
```

```
@article{osti_22454520,
```

title = {Localization and mass spectra of various matter fields on scalar-tensor brane},

author = {Xie, Qun-Ying and Institute of Theoretical Physics, Lanzhou University, Lanzhou 730000, People’s Republic of and Zhao, Zhen-Hua and Zhong, Yi and Yang, Jie and Zhou, Xiang-Nan},

abstractNote = {Recently, a new scalar-tensor braneworld model was presented in [http://dx.doi.org/10.1103/PhysRevD.86.127502]. It not only solves the gauge hierarchy problem but also reproduces a correct Friedmann-like equation on the brane. In this new model, there are two different brane solutions, for which the mass spectra of gravity on the brane are the same. In this paper, we investigate localization and mass spectra of various bulk matter fields (i.e., scalar, vector, Kalb-Ramond, and fermion fields) on the brane. It is shown that the zero modes of all the matter fields can be localized on the positive tension brane under some conditions, and the mass spectra of each kind of bulk matter field for the two brane solutions are different except for some special cases, which implies that the two brane solutions are not physically equivalent. When the coupling constants between the dilaton and bulk matter fields take special values, the mass spectra for both solutions are the same, and the scalar and vector zero modes are localized on the negative tension brane, while the KR zero mode is still localized on the positive tension brane.},

doi = {10.1088/1475-7516/2015/03/014},

journal = {Journal of Cosmology and Astroparticle Physics},

number = 03,

volume = 2015,

place = {United States},

year = {Tue Mar 10 00:00:00 EDT 2015},

month = {Tue Mar 10 00:00:00 EDT 2015}

}