RT Journal Article
T1 Evolution of the Cosmological Horizons in a Concordance Universe
A1 Margalef Bentabol, Juan
A1 Margalef Bentabol, Berta
A1 Cepa, Jordi
AB The particle and event horizons are widely known and studied concepts, but the study of their properties, in particular their evolution, have only been done so far considering a single state equation in a decelerating universe. This paper is the first of two where we study this problem from a general point of view. Specifically, this paper is devoted to the study of the evolution of these cosmological horizons in an accelerated universe with two state equations, cosmological constant and dust. We have obtained simple expressions in terms of their respective recession velocities that generalize the previous results for one state equation only. With the equations of state considered, it is proved that both velocities remain always positive.
PB IOP Publishing
SN 1475-7516
YR 2012
FD 2012-12-21
LK https://hdl.handle.net/10016/39774
UL https://hdl.handle.net/10016/39774
LA eng
NO This work was partially supported by the Spanish Ministry of Economy and Competitiveness (MINECO) under the grant AYA2011-29517-C03-01.
NO This work was partially supported by the Spanish Ministry of Economy and Competitiveness (MINECO) under the grant AYA2011-29517-C03-01.
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RD 17 jul. 2024