TY  - JOUR
TI  - It is sufficient to set the cosmological constant to zero or to a small number at aninitial time
AB  - I point out a simple but usually overlooked fact about the cosmological constant problem: to solve thecosmological constant problem it is sufficient to nd a symmetry or mechanism that sets the cosmological constant tozero or to a tiny value at some time in the past, provided that general relativity is the relevant theory of gravity, andthe energy{momentum tensor (excluding the part of the form of a cosmological constant) is conserved. The relevantsymmetry or mechanism need not be applicable today. Any additional cosmological constant term induced by a phasetransition in the energy{momentum tensor in this case is compensated by a shift in the cosmological constant term ofgravitational origin.
AU  - Erdem, Recai
PY  - 2016
JO  - Turkish Journal of Physics
VL  - 40
IS  - 2
SN  - 1300-0101
SP  - 175
EP  - 179
DB  - TRDizin
UR  - http://search/yayin/detay/213208
ER  -