Exponential Lagrangian for the Gravitational Field and the problem of Vacuum Energy

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dc.creatorLecian, O. M.
dc.creatorMontani, G.
dc.date2008-03-11
dc.date.accessioned2026-07-07T11:14:18Z
dc.date.available2026-07-07T11:14:18Z
dc.descriptionWe will analyze two particular features of an exponential gravitational Lagrangian. On the one hand, while this choice of the Lagrangian density allows for two free parameters, only one scale, the cosmological constant, arises as fundamental when the proper Einsteinian limit is to be recovered. On the other hand, the vacuum energy arising from $f(R)$ theories such that $f(0)\neq 0$ needs a cancellation mechanism, by which the present value of the cosmological constant can be recast.
dc.description4 pages, to appear in Proceedings of the II Stueckelberg Workshop - Int. J. Mod. Phys. A
dc.identifierhttps://arxiv.org/abs/0803.1620
dc.identifierhttp://arxiv.org/abs/0803.1620
dc.identifierInt.J.Mod.Phys.A23:1286-1289,2008
dc.identifierdoi:10.1142/S0217751X0804024X
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/192021
dc.subjectGeneral Relativity and Quantum Cosmology
dc.titleExponential Lagrangian for the Gravitational Field and the problem of Vacuum Energy
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