TY - JOUR
T1 - On emergent gravity, ungravity and Λ
AU - Diaz-Barron, Luis Rey
AU - Sabido, M.
N1 - Publisher Copyright:
© 2021
PY - 2021/7/10
Y1 - 2021/7/10
N2 - In this work we study the “ungravity” modifications to the Friedmann equations. The “ungravity” contributions are encoded in a modified entropy-area relation. To derive the modified Friedmann equations we use the first law of thermodynamics and the new entropy-area relationship. From the modified Friedmann equations (in the late time regime) we find an effective cosmological constant. Therefore, this simple model can provide an “ungravity” origin to the cosmological constant Λ.
AB - In this work we study the “ungravity” modifications to the Friedmann equations. The “ungravity” contributions are encoded in a modified entropy-area relation. To derive the modified Friedmann equations we use the first law of thermodynamics and the new entropy-area relationship. From the modified Friedmann equations (in the late time regime) we find an effective cosmological constant. Therefore, this simple model can provide an “ungravity” origin to the cosmological constant Λ.
KW - Cosmological constant
KW - Entropic gravity
KW - Ungravity
UR - http://www.scopus.com/inward/record.url?scp=85110495423&partnerID=8YFLogxK
U2 - 10.1016/j.physletb.2021.136365
DO - 10.1016/j.physletb.2021.136365
M3 - Artículo
AN - SCOPUS:85110495423
SN - 0370-2693
VL - 818
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
M1 - 136365
ER -