I read a sentence that says if a spherical volume in placed in a quantized space then the maximum entropy of the system can be calculated and it after simple steps found to be:(adsbygoogle = window.adsbygoogle || []).push({});

S~V where V is the volume of the spherical volume.

"Then the author said: Each local quantum field theory(with UV cut-off, in this case the grid) will give rise to an entropy that scales in that way. But, once gravity comes into play, this will no longer be so. Gravity gives rise to so-called dimensional reduction."

Can someone explain to me (because I know nothing about quantum field theory what was meant by the quoted 2 sentences above)? Thank you in advance

**Physics Forums | Science Articles, Homework Help, Discussion**

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# In quantum field theory

**Physics Forums | Science Articles, Homework Help, Discussion**