Speaker
Eissa Alnasrallah
(University College London)
Description
Modified gravity models with nonminimal coupling with matter have gained interest in the recent years due to their distinctive characteristics of breaking the stress-energy tensor conservation, entailing an additional force term. When applied to relativistic perfect fluids, such models can mimic late time acceleration and provide alternatives to dark sector interactions. The modified fluid equations of motion for these models result in effective thermodynamic terms. We show how different approaches to nonminimal couplings with relativistic perfect fluids exhibit different effective thermodynamics which can potentially provide a measure to differentiate between models and approaches.
| Topic | Modified theories of gravity |
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Authors
Christian Boehmer
(University College London)
Erik Jensko
(University College London)
Eissa Alnasrallah
(University College London)