String states, loops and effective actions in noncommutative field theory and matrix models

Autor(en)

Harold C. Steinacker

Abstrakt

Refining previous work by Iso, Kawai and Kitazawa, we discuss bi-local string states as a tool for loop computations in noncommutative field theory and matrix models. Defined in terms of coherent states, they exhibit the stringy features of noncommutative field theory. This leads to a closed form for the 1-loop effective action in position space, capturing the long-range non-local UV/IR mixing for scalar fields. The formalism applies to generic fuzzy spaces. The non-locality is tamed in the maximally supersymmetric IKKT or IIB model, where it gives rise to supergravity. The linearized supergravity interactions are obtained directly in position space at one loop using string states on generic noncommutative branes.

Organisation(en)

Mathematische Physik

Journal

Nuclear Physics, Section B

Band

910

Seiten

346-373

Anzahl der Seiten

28

ISSN

0550-3213

DOI

https://doi.org/10.1016/j.nuclphysb.2016.06.029

Publikationsdatum

09-2016

Peer-reviewed

Ja

ÖFOS 2012

103012 Hochenergiephysik

Schlagwörter

ASJC Scopus Sachgebiete

Nuclear and High Energy Physics

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/c77f11bc-e0d6-487c-ac4e-7202dcaf0c22