Modified gravity from the nonperturbative quantization of a metric

The European Physical Journal C

Vladimir Dzhunushaliev¹  Vladimir Folomeev²  Burkhard Kleihaus³  Jutta Kunz³ 

[1] Department of Theoretical and Nuclear Physics, Al-Farabi Kazakh National University, 050040, Almaty, Kazakhstan;IETP, Al-Farabi Kazakh National University, 050040, Almaty, Kazakhstan;Institute of Physicotechnical Problems and Material Science of the NAS of the Kyrgyz Republic, 265 a, Chui Street, 720071, Bishkek, Kyrgyz Republic;Institut für Physik, Universität Oldenburg, Postfach 2503, 26111, Oldenburg, Germany;Institute for Basic Research, Eurasian National University, 010008, Astana, Kazakhstan;IETP, Al-Farabi Kazakh National University, 050040, Almaty, Kazakhstan;Institute of Physicotechnical Problems and Material Science of the NAS of the Kyrgyz Republic, 265 a, Chui Street, 720071, Bishkek, Kyrgyz Republic;Institut für Physik, Universität Oldenburg, Postfach 2503, 26111, Oldenburg, Germany;Institut für Physik, Universität Oldenburg, Postfach 2503, 26111, Oldenburg, Germany;

关键词: Scalar Field;    Quantum Gravity;    Gravity Theory;    Ricci Tensor;    Quantum Fluctuation;   

DOI  :  10.1140/epjc/s10052-015-3398-5

来源: Springer

【 摘 要 】

Based on certain assumptions for the expectation value of a product of the quantum fluctuating metric at two points, the gravitational and scalar field Lagrangians are evaluated. Assuming a vanishing expectation value of the first-order terms of the metric, the calculations are performed with an accuracy of second order. It is shown that such quantum corrections give rise to modified gravity.

【 授权许可】

CC BY