Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2008-06-19
Phys.Rev.D78:105017,2008
Physics
High Energy Physics
High Energy Physics - Theory
24 pages, no figure, reference added, minor corrections, to be published in PRD
Scientific paper
10.1103/PhysRevD.78.105017
We study stability of noncommutative spaces in matrix models and discuss the continuum limit which leads to noncommutative Yang-Mills theories (NCYM). It turns out that most of noncommutative spaces in bosonic models are unstable. This indicates perturbative instability of fuzzy R^D pointed out by Van Raamsdonk and Armoni et al. persists to nonperturbative level in these cases. In this sense, these bosonic NCYM are not well-defined, or at least their matrix model formulations studied in this paper do not work. We also show that noncommutative backgrounds are stable in a supersymmetric matrix model deformed by a cubic Myers term, though the deformation itself breaks supersymmetry.
Azeyanagi Tatsuo
Hanada Masanori
Hirata Tomoyoshi
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