Bose, S;
Mazumdar, A;
Toroš, M;
(2021)
Gravitons in a box.
Physical Review D
, 104
(6)
, Article 066019. 10.1103/physrevd.104.066019.
Preview |
Text
PhysRevD.104.066019.pdf - Published Version Download (191kB) | Preview |
Abstract
Gravity and matter are universally coupled, and this unique universality provides us with an intriguing way to quantify quantum aspects of space-time in terms of the number of gravitons within a given box. In particular, we provide a limit on the number of gravitons if we trace out the matter degrees of freedom. We obtain the universal bound on the number of gravitons, which would be given by N g ≈ ( m / M p ) 2 . Since the number of gravitons also signifies the number of bosonic states they occupy, the number of gravitons indirectly constrain the system’s gravitational entropy. We show that it saturates the Bekenstein bound on the gravitational area law of entropy. Based on these observations, we ascertain that the gravitons permeating in the observable Universe are always N g ≫ 1 .
| Type: | Article |
|---|---|
| Title: | Gravitons in a box |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/physrevd.104.066019 |
| Publisher version: | https://doi.org/10.1103/physrevd.104.066019 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10135266 |
Archive Staff Only
 |
View Item |
