The holographic principle provides a deep insight into quantum gravity and resolves the fine-tuning crisis concerning the cosmological constant. Holographic dark energy introduces new ultraviolet (UV) and infrared (IR) cutoffs into quantum gravity which are necessarily strongly related. The equation of state for dark energy ω = p/ρ is discussed from the holographic point of view. The phantom option of ω <-1 is resurrected, as in an earlier cyclic cosmology. Such a cyclic model can, however, equally use the cosmological constant with ω =-1.
Holographic principle, cosmological constant and cyclic cosmology
Corianò Claudio
2020-01-01
Abstract
The holographic principle provides a deep insight into quantum gravity and resolves the fine-tuning crisis concerning the cosmological constant. Holographic dark energy introduces new ultraviolet (UV) and infrared (IR) cutoffs into quantum gravity which are necessarily strongly related. The equation of state for dark energy ω = p/ρ is discussed from the holographic point of view. The phantom option of ω <-1 is resurrected, as in an earlier cyclic cosmology. Such a cyclic model can, however, equally use the cosmological constant with ω =-1.File in questo prodotto:
Non ci sono file associati a questo prodotto.
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
