Space-time noncommutative field theories and unitarity

Journal Article (Journal Article)

We study the perturbative unitarity of noncommutative scalar field theories. Field theories with space-time noncommutativity do not have a unitary S-matrix. Field theories with only space noncommutativity are perturbatively unitary. This can be understood from string theory, since space noncommutative field theories describe a low energy limit of string theory in a background magnetic field. On the other hand, there is no regime in which space-time noncommutative field theory is an appropriate description of string theory. Whenever space-time noncommutative field theory becomes relevant massive open string states cannot be neglected. © 2000 Elsevier Science B.V.

Full Text

Duke Authors

Cited Authors

  • Gomis, J; Mehen, T

Published Date

  • December 18, 2000

Published In

Volume / Issue

  • 591 / 1-2

Start / End Page

  • 265 - 276

International Standard Serial Number (ISSN)

  • 0550-3213

Digital Object Identifier (DOI)

  • 10.1016/S0550-3213(00)00525-3

Citation Source

  • Scopus