Dynamical Supergravity Breaking via the Super-Higgs Effect Revisited
Dynamical Supergravity Breaking via the Super-Higgs Effect Revisited
复制标题
重新审视超希格斯效应带来的动态超重力破坏
DOI：
10.1103/physrevd.88.125017
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
N. Mavromatos
中科院分区：
文献类型：
--
作者：
J. Alexandre;N. Houston;N. Mavromatos
我们通过相应的单圈等效势，研究了局域超对称性(超引力)的动力学破缺，包括Deser-Zumino超Higgs效应。我们找到了有效方程的解，这些方程表明了引力质量的动态产生，从而打破了超重力。在共形超重力模型的情况下，引力质量可以比普朗克标度低得多，因为全球超对称破缺标度低于大统一标度。强调了由度规场的量子涨落引起的有效势中不存在不稳定性，这与文献中先前的主张相反。
We investigate the dynamical breaking of local supersymmetry (supergravity), including the Deser-Zumino super-Higgs effect, via the corresponding one-loop effective potential for the simple but quite representative cases of $\mathcal{N}=1$, $D=4$ simple supergravity and a (simplified) conformal version of it. We find solutions to the effective equations which indicate dynamical generation of a gravitino mass, thus breaking supergravity. In the case of conformal supergravity models, the gravitino mass can be much lower than the Planck scale, for global supersymmetry breaking scales below the grand unification scale. The absence of instabilities in the effective potential arising from the quantum fluctuations of the metric field is emphasized, contrary to previous claims in the literature.