On divergences in non-minimal N=4 conformal supergravity
On divergences in non-minimal N=4 conformal supergravity
复制标题
关于非最小 N=4 共形超重力的散度
DOI:
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发表时间:
2017
期刊:
影响因子:
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通讯作者:
A. Tseytlin
中科院分区:
文献类型:
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作者:
A. Tseytlin
We review the question of quantum consistency of N=4 conformal supergravity in 4 dimensions. The UV divergences and anomalies of the standard (‘minimal’) conformal supergravity where the complex scalar φ is not coupled to the Weyl graviton kinetic term can be cancelled by coupling this theory to N=4 super Yang–Mills with gauge group of dimension 4. The same turns out to be true also for the ‘non-minimal’ N=4 conformal supergravity with the action (recently constructed (Butter et al 2017 Phys. Rev. Lett. 118 081602)) depending on an arbitrary holomorphic function f(φ). The special case of the ‘non-minimal’ conformal supergravity with f=e2φ appears in the twistor-string theory. We show that divergences and anomalies do not depend on the form of the function f and thus can be cancelled just as in the ‘minimal’ f=1 case by coupling the theory to four N=4 vector multiplets.