# On D-brane -anti D-brane effective actions and their all order bulk singularity structures

## Abstract

All four point functions of brane anti brane system including their correct all order α{sup ′} corrections have been addressed. All five point functions of one closed string Ramond-Ramond (RR), two real tachyons and either one gauge field or the scalar field in both symmetric and asymmetric pictures have also been explored. The entire analysis of is carried out. Not only does it fix the vertex operator of RR in asymmetric picture and in higher point functions of string theory amplitudes but also it confirms the fact that there is no issue of picture dependence of the mixed closed RR, gauge fields, tachyons and fermion fields in all symmetric or anti symmetric ones. We compute S-matrix in the presence of a transverse scalar field, two real tachyons and that reveals two different kinds of bulk singularity structures, involving an infinite number of u-channel gauge field and (u+s{sup ′}+t{sup ′})-channel scalar bulk poles. In order to produce all those bulk singularity structures, we define various couplings at the level of the effective field theory that involve the mixing term of Chern-Simons coupling (with C-potential field) and a covariant derivative of the scalar field that comes from the pull-back of brane. Eventuallymore »

- Authors:

- Centre for Research in String Theory, School of Physics and Astronomy,Queen Mary University of London, Mile End Road, London E1 4NS (United Kingdom)
- (Austria)

- Publication Date:

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

- OSTI Identifier:
- 22572070

- Resource Type:
- Journal Article

- Resource Relation:
- Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2016; Journal Issue: 04; Other Information: PUBLISHER-ID: JCAP04(2016)055; OAI: oai:repo.scoap3.org:15389; cc-by 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:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ACTION INTEGRAL; BRANES; CORRECTIONS; GAUGE INVARIANCE; QUANTUM FIELD THEORY; S MATRIX; SCALAR FIELDS; SINGULARITY; STRING THEORY; SUPERSYMMETRY; TACHYONS; U CHANNEL

### Citation Formats

```
Hatefi, Ehsan, and Institute for Theoretical Physics, TU Wien,Wiedner Hauptstrasse 8-10/136, A-1040 Vienna.
```*On D-brane -anti D-brane effective actions and their all order bulk singularity structures*. United States: N. p., 2016.
Web. doi:10.1088/1475-7516/2016/04/055.

```
Hatefi, Ehsan, & Institute for Theoretical Physics, TU Wien,Wiedner Hauptstrasse 8-10/136, A-1040 Vienna.
```*On D-brane -anti D-brane effective actions and their all order bulk singularity structures*. United States. doi:10.1088/1475-7516/2016/04/055.

```
Hatefi, Ehsan, and Institute for Theoretical Physics, TU Wien,Wiedner Hauptstrasse 8-10/136, A-1040 Vienna. Wed .
"On D-brane -anti D-brane effective actions and their all order bulk singularity structures". United States.
doi:10.1088/1475-7516/2016/04/055.
```

```
@article{osti_22572070,
```

title = {On D-brane -anti D-brane effective actions and their all order bulk singularity structures},

author = {Hatefi, Ehsan and Institute for Theoretical Physics, TU Wien,Wiedner Hauptstrasse 8-10/136, A-1040 Vienna},

abstractNote = {All four point functions of brane anti brane system including their correct all order α{sup ′} corrections have been addressed. All five point functions of one closed string Ramond-Ramond (RR), two real tachyons and either one gauge field or the scalar field in both symmetric and asymmetric pictures have also been explored. The entire analysis of is carried out. Not only does it fix the vertex operator of RR in asymmetric picture and in higher point functions of string theory amplitudes but also it confirms the fact that there is no issue of picture dependence of the mixed closed RR, gauge fields, tachyons and fermion fields in all symmetric or anti symmetric ones. We compute S-matrix in the presence of a transverse scalar field, two real tachyons and that reveals two different kinds of bulk singularity structures, involving an infinite number of u-channel gauge field and (u+s{sup ′}+t{sup ′})-channel scalar bulk poles. In order to produce all those bulk singularity structures, we define various couplings at the level of the effective field theory that involve the mixing term of Chern-Simons coupling (with C-potential field) and a covariant derivative of the scalar field that comes from the pull-back of brane. Eventually we explore their all order α{sup ′} corrections in the presence of brane anti brane system where various remarks will be also pointed out.},

doi = {10.1088/1475-7516/2016/04/055},

journal = {Journal of Cosmology and Astroparticle Physics},

number = 04,

volume = 2016,

place = {United States},

year = {Wed Apr 27 00:00:00 EDT 2016},

month = {Wed Apr 27 00:00:00 EDT 2016}

}