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arXiv 1208.0339hep-thgr-qcmath-phmath.MP
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高阶导数、高阶自旋理论中的正则分支

Canonical bifurcation in higher derivative, higher spin, theories

S. Deser, S. Ertl, D. Grumiller

摘要:

我们提出了一个非微扰正则分析的D=3的二次曲率,但鬼影免费,模型来解释一个新的,“约束分岔”,效果。结果包括激发计数的跳跃:线性化的水准仪变量在完整的理论中被提升为动态变量。我们说明这些结果与具体的微扰对应。它们当然是相互一致的,相关模型中的微扰发现也是如此。传播扭转方面的几何解释揭示了该模型的关系(改进)版本的爱因斯坦-外尔引力在线性化水平。最后,我们列出了在一般相互作用规范系统中触发分岔现象的必要条件。

英文摘要:

We present a non-perturbative canonical analysis of the D=3 quadratic-curvature, yet ghost-free, model to exemplify a novel, "constraint bifurcation", effect. Consequences include a jump in excitation count: a linearized level gauge variable is promoted to a dynamical one in the full theory. We illustrate these results with their concrete perturbative counterparts. They are of course mutually consistent, as are perturbative findings in related models. A geometrical interpretation in terms of propagating torsion reveals the model's relation to an (improved) version of Einstein-Weyl gravity at the linearized level. Finally, we list some necessary conditions for triggering the bifurcation phenomenon in general interacting gauge systems.

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