PreprintCC BY 4.0arXiv
On more general Gibbons-Hawking-York boundary terms for f(R) gravity
Abstract
More general boundary conditions are introduced - with respect to known literature - which produce a well-posed stationary action principle in f(R) gravity. These conditions encompass the known cases, thus enlarging the space of admissible solutions. The corresponding Gibbons-Hawking-York boundary terms are explicitly computed and hold for any analytic f(R). The perspectives of application concerning the scalar-tensor mapping and the laws of black-hole thermodynamics are outlined in the conclusions.
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BibTeX
@misc{scali2026more,
title = {{On more general Gibbons-Hawking-York boundary terms for f(R) gravity}},
author = {Federico Scali and Sergio Luigi Cacciatori and Matteo Galaverni and Gabriele Gionti},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.37692},
eprint = {2609.37692},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.37692},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - On more general Gibbons-Hawking-York boundary terms for f(R) gravity
AU - Federico Scali
AU - Sergio Luigi Cacciatori
AU - Matteo Galaverni
AU - Gabriele Gionti
PY - 2026
DA - 2026/09/29
PB - arXiv
DO - 10.48550/arxiv.2609.37692
UR - https://arxiv.org/abs/2609.37692
AB - More general boundary conditions are introduced - with respect to known literature - which produce a well-posed stationary action principle in f(R) gravity. These conditions encompass the known cases, thus enlarging the space of admissible solutions. The corresponding Gibbons-Hawking-York boundary terms are explicitly computed and hold for any analytic f(R). The perspectives of application concerning the scalar-tensor mapping and the laws of black-hole thermodynamics are outlined in the conclusions.
ER -