科研之友
微信
新浪微博
Facebook
分享链接
摘要
Strong coupling gravity arises from general relativity by a scaling limit that preserves the number of physical degrees of freedom as well as covariance under the group of spatio-temporal diffeomorphisms. An intrinsic geodesic principle for it is formulated and justified. Geodesic congruences and the test bodies following them are, according to the principle, unaffected by nonlinear gravitational waves and can be gauged-fixed so as to never depart from their initial values. Among other consequences this offers a new perspective on gravitational coarse graining.
- 出版日期2015-11-5
