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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