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arXiv 1104.4923hep-th
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高阶理论的微扰Hamilton约束

Perturbative Hamiltonian constraints for higher order theories

S. A. Martinez, R. Montemayor, L. F. Urrutia

摘要:

我们提出了一种方法,用于构建一个一致的低能量正则形式主义的高阶时间导数理论,扩展狄拉克方法,包括微扰哈密顿约束。我们将其应用到两个典型的例子:Pais-Uhlenbeck振荡器和Bernard-Duncan标量场。我们还比较了结果,无论是在经典和量子水平上,与相应的直接微扰建设适用于精确的高阶理论。这种比较突出了目前形式主义的合理性。

英文摘要:

We present a method for constructing a consistent low energy canonical formalism for higher order time-derivative theories, extending the Dirac method to include perturbative Hamiltonian constraints. We apply it to two paradigmatic examples: the Pais-Uhlenbeck oscillator and the Bernard-Duncan scalar field. We also compare the results, both at the classical and quantum level, with the ones corresponding to a direct perturbative construction applied to the exact higher order theory. This comparison highligths the soundness of the present formalism.

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