Is there more to gravity than gravitons?
This is an intriguing paper by Padmanabhan:
I saw this paper back in 2004, when it was submitted, but failed to see reactions to it at that time. In the comments section of a post about string theory over at Cosmic Variance, the issue of gravitons came about and made me wonder again about that “semi-classical” work by Padmanabhan. I wonder whether the issues raised by Padmanabhan are indeed correct and if so, how would they be interpreted in string theory.