A universe from a Lagrangian fixed point

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dc.contributor.authorAlvarez, Pedro D.
dc.contributor.authorKoch, Benjamin
dc.contributor.authorRiahinia, Ali
dc.contributor.authorRincon, Angel
dc.date.accessioned2025-01-20T16:06:08Z
dc.date.available2025-01-20T16:06:08Z
dc.date.issued2024
dc.description.abstractIn this paper, we investigate the theoretical possibility that a Lagrangian fixed point, when applied to cosmological models, can drive dynamical evolution towards a bouncing universe. We analyze the physics of a Lagrangian fixed point within the context of a gravitational average effective action featuring scale-dependent couplings. To explore this concept, we develop a toy model set in a four-dimensional, spatially flat spacetime, anchored by a Lagrangian fixed point. Solving the cosmological equations of this model analytically, we identify several non-trivial solution branches. These branches are characterized by a modified scale factor and dynamic gravitational couplings, offering new insights into the behavior of cosmological models under these conditions.
dc.fuente.origenWOS
dc.identifier.doi10.1016/j.dark.2024.101674
dc.identifier.eissn2212-6864
dc.identifier.urihttps://doi.org/10.1016/j.dark.2024.101674
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/89944
dc.identifier.wosidWOS:001333012800001
dc.language.isoen
dc.revistaPhysics of the dark universe
dc.rightsacceso restringido
dc.subjectCosmology
dc.subjectBouncing cosmology
dc.subjectModified theories of Gravity
dc.subjectScale-dependent couplings
dc.subjectLagrangian fixed point
dc.titleA universe from a Lagrangian fixed point
dc.typeartículo
dc.volumen46
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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