Four-dimensional quantum gravity in the conformal sector.

Four-dimensional quantum gravity in the conformal sector.
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共形扇区中的四维量子引力。

DOI:
10.1103/physrevd.45.2013
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发表时间:
1992
期刊:
Physical Review D, Particles and fields
影响因子:
--
通讯作者:
E. Mottola
E. Mottola
中科院分区:
--
文献类型:
--
作者:
I. Antoniadis;E. Mottola

文献摘要

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研究了四维(4D)量子引力的共形因子的迹反常诱导动力学。由此得到的有效标量理论是紫外线可重整化的,并且具有一个非平凡的红外稳定不动点。导出了临界点处保角因子的精确反常标度维。我们认为,这个理论描述了大距离的4D引力,并为宇宙常数问题的动力学解提供了一个框架。
We study the trace-anomaly-induced dynamics of the conformal factor of four-dimensional (4D) quantum gravity. The resulting effective scalar theory is ultraviolet renormalizable, and possesses a nontrivial, infrared stable fixed point. The exact anomalous scaling dimension of the conformal factor at the critical point is derived. We argue that this theory describes 4D gravity at large distances and provides a framework for a dynamical solution of the cosmological-constant problem.