dc.contributor.author |
Bak, Sang-Eon |
|
dc.contributor.author |
Parikh, Maulik |
|
dc.contributor.author |
Sarkar, Sudipta |
|
dc.contributor.author |
Setti, Francesco |
|
dc.coverage.spatial |
United Kingdom |
|
dc.date.accessioned |
2024-08-09T10:31:53Z |
|
dc.date.available |
2024-08-09T10:31:53Z |
|
dc.date.issued |
2024-07 |
|
dc.identifier.citation |
Bak, Sang-Eon; Parikh, Maulik; Sarkar, Sudipta and Setti, Francesco, "Quantum-gravitational null Raychaudhuri equation", Journal of High Energy Physics, DOI: 10.1007/JHEP07(2024)214, vol. 2024, no. 7, Jul. 2024. |
|
dc.identifier.issn |
1126-6708 |
|
dc.identifier.issn |
1029-8479 |
|
dc.identifier.uri |
https://doi.org/10.1007/JHEP07(2024)214 |
|
dc.identifier.uri |
https://repository.iitgn.ac.in/handle/123456789/10295 |
|
dc.description.abstract |
We consider a congruence of null geodesics in the presence of a quantized spacetime metric. The coupling to a quantum metric induces fluctuations in the congruence; we calculate the change in the area of a pencil of geodesics induced by such fluctuations. For the gravitational field in its vacuum state, we find that quantum gravity contributes a correction to the null Raychaudhuri equation which is of the same sign as the classical terms. We thus derive a quantum-gravitational focusing theorem valid for linearized quantum gravity. |
|
dc.description.abstract |
We consider a congruence of null geodesics in the presence of a quantized spacetime metric. The coupling to a quantum metric induces fluctuations in the congruence; we calculate the change in the area of a pencil of geodesics induced by such fluctuations. For the gravitational field in its vacuum state, we find that quantum gravity contributes a correction to the null Raychaudhuri equation which is of the same sign as the classical terms. We thus derive a quantum-gravitational focusing theorem valid for linearized quantum gravity. |
|
dc.description.statementofresponsibility |
by Sang-Eon Bak, Maulik Parikh, Sudipta Sarkar and Francesco Setti |
|
dc.format.extent |
vol. 2024, no. 7 |
|
dc.language.iso |
en_US |
|
dc.publisher |
Springer |
|
dc.subject |
Classical theories of gravity |
|
dc.subject |
Models of quantum gravity |
|
dc.title |
Quantum-gravitational null Raychaudhuri equation |
|
dc.type |
Article |
|
dc.relation.journal |
Journal of High Energy Physics |
|