## Transition of Expansion Acceleration of the Universe Through Negative Mass

**Authors:** Hyoyoung Choi

This letter explains that density of positive mass and negative mass is almost uniformly throughout the whole
universe, but density of positive mass and negative mass included in a random universe radius R can be different
from each other. Like this, positive, zero, negative values of total gravitational potential energy are all possible
due to density difference of positive mass and negative mass included in a random universe radius R. This letter
is showing possibility in explaining the decelerating expansion and accelerating expansion due to density difference
of positive mass and negative mass because negative mass and positive mass conducts different forms of movement
depending on the density difference of positive mass and negative mass. As change of total gravitational potential
energy sign occurs from UT=0 and total gravitational potential energy oscillates based on 0. This provides valid
explanation regarding to the problems of the
atness of the universe and fine tuning.

**Comments:** 5 Pages.

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### Submission history

[v1] 16 Aug 2010

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