The Energy Conservation in Our Universe and the Pressureless Dark Energy. (15th July 2015)

• Record Type: Journal Article
• Authors: Chan, Man Ho
• Other Names: Bamba Kazuharu Academic Editor.
• Is Part Of: Journal of gravity. Volume 2015(2015)
• Publication Date: 2015-07-15
• Subjects: Gravity -- Periodicals; Gravity; Periodicals; Electronic journals; 531.14
• DOI: 10.1155/2015/384673
• Languages: English
• ISSNs: 2356-7422

Abstract

Abstract : 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 the density of the dark energy is almost a constant throughout the universe expansion. In this paper, we show that the law of energy conservation 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.