Dilaton quantum gravity
Dilaton quantum gravity
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膨胀量子引力
DOI:
10.1016/j.physletb.2013.10.015
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发表时间:
2013
影响因子:
4.4
通讯作者:
C. Wetterich
中科院分区:
文献类型:
--
作者:
T. Henz;J. M. Pawlowski;A. Rodigast;C. Wetterich
We propose a simple fixed-point scenario in the renormalization flow of a scalar dilaton coupled to gravity. This would render gravity non-perturbatively renormalizable and thus constitute a viable theory of quantum gravity. On the fixed point dilatation symmetry is exact and the quantum effective action takes a very simple form. Realistic gravity with a nonzero Planck mass is obtained through a nonzero expectation value for the scalar field, constituting a spontaneous scale symmetry breaking. Furthermore, relevant couplings for the flow away from the fixed point can be associated with a “dilatation anomaly” that is responsible for dynamical dark energy. For the proposed fixed point and flow away from it the cosmological “constant” vanishes for asymptotic time.
影响因子:
3.3
作者:
M. Reuter;F. Saueressig
通讯作者:
F. Saueressig
DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
J. Ambjorn;J. Jurkiewicz;R. Loll
通讯作者:
R. Loll
DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
H. Hamber
通讯作者:
H. Hamber