Gravitons in a Box

Understand

Gravity and matter are universally coupled, and this unique universality provides us with an intriguing way to quantifying quantum aspects of space-time in terms of the number of gravitons within a given box.

• In particular, we will provide a limit on the number of gravitons if we trace out the matter degrees of freedom.
• We will obtain the universal bound on the number of gravitons, which would be given by $N_{g}\approx(m/M_{p})^{2}$.
• Since the number of gravitons also signify the number of bosonic states they occupy, the number of gravitons will place an indirect constraint on the gravitational entropy of the system.