Cutting rules and perturbative unitarity of noncommutative electric-type field theories from string theory
Tools
Tools
Tools
Torrielli, A (2003) Cutting rules and perturbative unitarity of noncommutative electric-type field theories from string theory Phys.Rev. D, 67.
![[img]](http://epubs.surrey.ac.uk/style/images/fileicons/text.png)
|
Text
Cutt.pdf - Accepted version Manuscript Download (176kB) |
Official URL: http://dx.doi.org/10.1103/PhysRevD.67.086010
Abstract
We discuss the breakdown of perturbative unitarity of noncommutative quantum field theories in electric-type background in the light of string theory. We consider the analytic structure of string loop two-point functions using a suitable off-shell continuation and then study the zero slope limit of Seiberg and Witten. In this way we pick up how the unphysical tachyonic branch cut appears in the noncommutative field theory. We briefly discuss discontinuities and cutting rules for the full string theory amplitude and relate them to the noncommutative field theoretical results, and also discuss the insight one gains into the magnetic case too.
| Item Type: | Article | ||||||
|---|---|---|---|---|---|---|---|
| Divisions : | Faculty of Engineering and Physical Sciences > Mathematics | ||||||
| Authors : |
|
||||||
| Date : | 2003 | ||||||
| DOI : | 10.1103/PhysRevD.67.086010 | ||||||
| Related URLs : | |||||||
| Additional Information : | Copyright 2003 The American Physical Society | ||||||
| Depositing User : | Symplectic Elements | ||||||
| Date Deposited : | 27 Jan 2012 12:25 | ||||||
| Last Modified : | 31 Oct 2017 14:17 | ||||||
| URI: | http://epubs.surrey.ac.uk/id/eprint/72382 |
Actions (login required)
 |
View Item |
Downloads
Downloads per month over past year