Disturbing Implications of a Cosmological Constant
Abstract
In this paper we consider the implications of a cosmological constant for the evolution of the universe, under a set of assumptions motivated by the holographic and horizon complementarity principles. We discuss the ``causal patch'' description of spacetime required by this framework, and present some simple examples of cosmologies described this way. We argue that these assumptions inevitably lead to very deep paradoxes, which seem to require major revisions of our usual assumptions.
 Publication:

Journal of High Energy Physics
 Pub Date:
 October 2002
 DOI:
 10.1088/11266708/2002/10/011
 arXiv:
 arXiv:hepth/0208013
 Bibcode:
 2002JHEP...10..011D
 Keywords:

 High Energy Physics  Theory;
 Astrophysics;
 General Relativity and Quantum Cosmology
 EPrint:
 26 pages, 7 figures v2: references added v3: reference added