Ghost Constraints on Modified Gravity

Simple item page
dc.creatorNunez, Alvaro
dc.creatorSolganik, Slava
dc.date2004-11-09
dc.date2004-11-11
dc.date.accessioned2026-07-07T04:17:44Z
dc.date.available2026-07-07T04:17:44Z
dc.descriptionWe show that general infrared modifications of the Einstein-Hilbert action obtained by addition of curvature invariants are not viable. These modifications contain either ghosts or light gravity scalars. A very specific fine-tuning might solve the problem of ghosts, but the resulting theory is still equivalent to a scalar-tensor gravity and thus gives a corrupted picture of gravity at the solar system scale. The only known loophole is that the theory becomes higher dimensional at large distances. The infinite number of degrees of freedom introduced in this way is not reducible to the addition of an arbitrary function of curvature invariants.
dc.description7 pages; v2: typos corrected
dc.identifierhttps://arxiv.org/abs/hep-th/0411102
dc.identifierhttp://arxiv.org/abs/hep-th/0411102
dc.identifierPhys.Lett. B608 (2005) 189-193
dc.identifierdoi:10.1016/j.physletb.2005.01.015
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/52885
dc.subjectHigh Energy Physics - Theory
dc.subjectAstrophysics
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectHigh Energy Physics - Phenomenology
dc.titleGhost Constraints on Modified Gravity
dc.typetext

Files

Collections

arXiv