Open AccessThe Energy Conservation in Our Universe and the Pressureless Dark Energy
Author(s) -
Man Ho Chan
Publication year - 2015
Publication title -
journal of gravity
Language(s) - English
Resource type - Journals
eISSN - 2356-7422
pISSN - 2314-6907
DOI - 10.1155/2015/384673
Subject(s) - dark energy , zero energy universe , physics , metric expansion of space , de sitter universe , phantom energy , dark fluid , big rip , universe , cosmological constant , astrophysics , vacuum energy , astronomy , theoretical physics , cosmology
Recent observations confirm that a certain amount of unknown dark energy exists in our universe so that the current expansion of our universe is accelerating. It is commonly believed that the pressure of the dark energy is negative and thedensity of the dark energy is almost a constant throughout the universe expansion. In this paper, we show that the law of energyconservation in our universe has to be modified because more vacuum energy is gained due to the universe expansion. As a result, the pressure of dark energy would be zero if the total energy of our universe is increasing. This pressureless dark energy model basically agrees with the current observational results
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom