A Note on UV/IR for Noncommutative Complex Scalar Field

A Note on UV/IR for Noncommutative Complex Scalar Field
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关于非交换复标量场紫外/红外的注解

DOI:
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发表时间:
2000
期刊:
arXiv: High Energy Physics - Theory
影响因子:
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通讯作者:
A. S.Koshelev
A. S.Koshelev
中科院分区:
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文献类型:
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作者:
I. Aref’eva;D. Belov;A. S.Koshelev

文献摘要

被引文献

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研究了复标量场的非对易量子场论。U(1)不变的四次相互作用$(\phi ^*\phi)^2 $有一个两耦合的非对易类似物,即$A\phi ^*\星星\phi\星星\phi ^*\星星\phi + B\phi ^*\星星\phi ^*\星星\phi\星星\phi $。对于$A $和$B $的任意值,模型不可重正化。然而,在两种特殊情况下,它是单循环可重正化的:B = 0和$A = B $。此外,在B = 0的情况下,该模型至少在单环插入水平上不遭受IR发散。
Noncommutative quantum field theory of a complex scalar field is considered. There is a two-coupling noncommutative analogue of U(1)-invariant quartic interaction $(\phi^*\phi)^2$, namely $A\phi^*\star\phi\star\phi^*\star\phi+ B\phi^*\star\phi^*\star\phi\star\phi$. For arbitrary values of $A$ and $B$ the model is nonrenormalizable. However, it is one-loop renormalizable in two special cases: B=0 and $A=B$. Furthermore, in the case B=0 the model does not suffer from IR divergencies at least at one-loop insertions level.