Theory of general relativity (GR) has been scrutinized by experts for almost a century and describes accurately all gravitational phenomena ranging from the solar system to the universe. However, this success is achieved provided one admits three completely independent new components in the energy-stress tensor T v ! inflaton, dark matter and dark energy, which though do not have any non-gravitational or laboratory evidence and have remained generally speculative. Moreover, the dark energy poses a serious confrontation between fundamental physics and cosmology.
No takes yet. Share an insight, caveat, or question.
Ram Gopal Vishwakarma (2013) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: