TY - JOUR
T1 - Lagrangian formulation for an extended cosmological equation-of-state
AU - Panotopoulos, Grigoris
AU - Lopes, Ilídio
AU - Rincón, Ángel
N1 - Publisher Copyright:
© 2020 Elsevier B.V.
PY - 2021/1
Y1 - 2021/1
N2 - We show that the extended cosmological equation-of-state developed starting from a Chaplygin equation-of-state, recently applied to stellar modelling, is a viable dark energy model consistent with standard scalar potentials. Moreover we find a Lagrangian formulation based on a canonical scalar field with the appropriate self-interaction potential. Finally, we fit the scalar potential obtained numerically with concrete functions well studied in the literature. Our results may be of interest to model builders and particle physicists.
AB - We show that the extended cosmological equation-of-state developed starting from a Chaplygin equation-of-state, recently applied to stellar modelling, is a viable dark energy model consistent with standard scalar potentials. Moreover we find a Lagrangian formulation based on a canonical scalar field with the appropriate self-interaction potential. Finally, we fit the scalar potential obtained numerically with concrete functions well studied in the literature. Our results may be of interest to model builders and particle physicists.
UR - http://www.scopus.com/inward/record.url?scp=85106825453&partnerID=8YFLogxK
U2 - 10.1016/j.dark.2020.100751
DO - 10.1016/j.dark.2020.100751
M3 - Article
AN - SCOPUS:85106825453
SN - 2212-6864
VL - 31
JO - Physics of the Dark Universe
JF - Physics of the Dark Universe
M1 - 100751
ER -