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Nonlocal regularisation of noncommutative field theories
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Date
2006-08-10
Author
Govindarajan, T. R.
Kürkcüoğlu, Seçkin
PANERO, Marco
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We study noncommutative field theories, which are inherently nonlocal, using a Poincare-invariant regularisation scheme which yields an effective, nonlocal theory for energies below a cutoff scale. After discussing the general features and the peculiar advantages of this regularisation scheme for theories defined in noncommutative spaces, we focus our attention on the particular case when the noncommutativity parameter is inversely proportional to the square of the cutoff, via a dimensionless parameter eta. We work out the perturbative corrections at one-loop order for a scalar theory with quartic interactions, where the signature of noncommutativity appears in eta-dependent terms. The implications of this approach, which avoids the problems related to uv-ir mixing, are discussed from the perspective of the Wilson renormalisation program. Finally, we remark about the generality of the method, arguing that it may lead to phenomenologically relevant predictions, when applied to realistic field theories.
Subject Keywords
Nuclear and High Energy Physics
,
Astronomy and Astrophysics
URI
https://hdl.handle.net/11511/37487
Journal
MODERN PHYSICS LETTERS A
DOI
https://doi.org/10.1142/s021773230602113x
Collections
Department of Physics, Article