Light dilaton at fixed points and ultra light scale super-Yang–Mills
Light dilaton at fixed points and ultra light scale super-Yang–Mills
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定点轻膨胀和超轻尺度超杨-米尔斯
DOI：
10.1016/j.physletb.2012.04.050
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发表时间：
2011
影响因子：
4.4
通讯作者：
Francesco Sannino
中科院分区：
文献类型：
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作者：
O. Antipin;M. Mojaza;Francesco Sannino
本文研究了具有伴随费米子、Nf Dirac味和类Higgs复合体Nf× Nf标量的非超对称SU（X）规范理论的红外动力学。首先建立了红外稳定微扰不动点的存在性，然后研究了该不动点附近的谱。我们证明了这个理论的特点是轻标量自由度被确定与光子，并阐明其物理性质。我们计算的频谱，并证明在低能量的非微扰部分的频谱的理论是一个纯粹的超对称杨米尔斯。因此，我们可以确定精确的非微扰费米子凝聚，并推导出理论的非微扰谱的相关性质。我们还表明，super-Yang-米尔斯的内在规模是指数小于与破缺的共形和手征对称性的理论的规模。
We investigate the infrared dynamics of a nonsupersymmetric SU(X) gauge theory featuring an adjoint fermion, NfDirac flavors and a Higgs-like complex Nf×Nfscalar which is a gauge singlet. We first establish the existence of an infrared stable perturbative fixed point and then investigate the spectrum near this point. We demonstrate that this theory features a light scalar degree of freedom to be identified with the dilaton and elucidate its physical properties. We compute the spectrum and demonstrate that at low energy the nonperturbative part of the spectrum of the theory is the one of pure supersymmetric Yang–Mills. We can therefore determine the exact nonperturbative fermion condensate and deduce relevant properties of the nonperturbative spectrum of the theory. We also show that the intrinsic scale of super-Yang–Mills is exponentially smaller than the scale associated to the breaking of conformal and chiral symmetry of the theory.
DOI：
10.1088/0954-3899/39/3/033001
发表时间：
2011-08
期刊：
Journal of Physics G
影响因子：
--
作者：
J. Braun
通讯作者：
J. Braun