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arXiv 0910.1735gr-qchep-th
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宇宙学常数与Wheeler-DeWitt方程

The Cosmological constant and the Wheeler-DeWitt Equation

Remo Garattini

摘要:

我们讨论了如何提取信息的宇宙学常数从惠勒-德威特方程,被认为是一个特征值的Sturm-Liouville问题。该方程近似为一个循环的帮助下,高斯试探波泛函的变分方法。一个典型的模式分解被用来分离横向无痕张量(引力子)鬼和标量。我们表明,没有鬼出现在宇宙学常数的最终评估。zeta函数正则化用于处理发散。引入了一个重整化过程和一个重整化群方程来消除无穷大。一个简短的讨论被认为是一个$f(R)$理论的扩展。

英文摘要:

We discuss how to extract information about the cosmological constant from the Wheeler-DeWitt equation, considered as an eigenvalue of a Sturm-Liouville problem. The equation is approximated to one loop with the help of a variational approach with Gaussian trial wave functionals. A canonical decomposition of modes is used to separate transverse-traceless tensors (graviton) from ghosts and scalar. We show that no ghosts appear in the final evaluation of the cosmological constant. A zeta function regularization is used to handle with divergences. A renormalization procedure is introduced to remove the infinities together with a renormalization group equation. A brief discussion on the extension to a $f(R)$ theory is considered.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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