Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Gravitational Constant

  1. Oct 26, 2008 #1

    A few years ago, I heard that string theory suggested a link between the gravitational constant (G) and Planck's constant (h). Is this true? If so, what value of G does string theory predict? Any references would be much appreciated.

  2. jcsd
  3. Oct 26, 2008 #2


    User Avatar
    Science Advisor

    Since the whole point of string theory is to connect gravity with quantum physics, that would certainly be expected. But one of the problems with string theory is that there are so many "undetermined constants" that you can set them to give pretty much anything you like for both.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Threads - Gravitational Constant Date
I How does gravitation fit into this picture of branes? Oct 14, 2017
I Less gravity vs. dark energy Aug 8, 2017
Fast variable gravitational constant Feb 1, 2009