Spectral representation and dispersion relations in field theory on noncommutative space
β Scribed by Yi Liao; Klaus Sibold
- Book ID
- 108437680
- Publisher
- Elsevier Science
- Year
- 2002
- Tongue
- English
- Weight
- 116 KB
- Volume
- 549
- Category
- Article
- ISSN
- 0370-2693
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## Abstract This is an exposition of joint work with S. Doplicher, K. Fredenhagen, and Gh. Piacitelli [1]. The violation of unitarity found in quantum field theory on noncommutative spacetimes in the context of the soβcalled modified Feynman rules is linked to the notion of time ordering implicitly
We analyze in detail the quantization of a simple noncommutative model of spontaneous symmetry breaking in zero dimensions taking into account the noncommutative setting seriously. The connection to the counting argument of Feynman diagrams of the corresponding theory in four dimensions is worked ou