0
$\begingroup$

If quantum field theory calculates that the vacuum energy is infinite and Einstein's theory of gravity implies this energy should produce a curvature of space-time then why shouldn't the universe be round and expanding like a balloon instead of predicted flat? Couldn't it just be we observe it is flat because we are only seeing a minute part of it?

$\endgroup$
  • $\begingroup$ en.wikipedia.org/wiki/Cosmological_constant_problem $\endgroup$ – Avantgarde Jul 21 at 20:46
  • $\begingroup$ The lidea of the zero point energy in QFT is based on the fact that the lowest energy of a quantum oscillator is not zero. This however is true only on one condition - the oscillator must physically exist. The lowest energy of a quantum oscillator that does not physically exist is zero. $\endgroup$ – safesphere Jul 22 at 3:53
  • $\begingroup$ renormalization > poppycock as superstring theory or does the graviton have a partner? $\endgroup$ – Parish Elliott Jul 22 at 15:14

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.