Physics of Dark Energy Particles |
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Authors: | C G Böhmer T Harko |
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Institution: | (1) Department of Mathematics, University College London, Gower Street, London, WC1E 6BT, UK;(2) Department of Physics and Center for Theoretical and Computational Physics, The University of Hong Kong, Pok Fu Lam Road, Hong Kong, Hong Kong |
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Abstract: | We consider the astrophysical and cosmological implications of the existence of a minimum density and mass due to the presence
of the cosmological constant. If there is a minimum length in nature, then there is an absolute minimum mass corresponding
to a hypothetical particle with radius of the order of the Planck length. On the other hand, quantum mechanical considerations
suggest a different minimum mass. These particles associated with the dark energy can be interpreted as the “quanta” of the
cosmological constant. We study the possibility that these particles can form stable stellar-type configurations through gravitational
condensation, and their Jeans and Chandrasekhar masses are estimated. From the requirement of the energetic stability of the
minimum density configuration on a macroscopic scale one obtains a mass of the order of 1055 g, of the same order of magnitude as the mass of the universe. This mass can also be interpreted as the Jeans mass of the
dark energy fluid. Furthermore we present a representation of the cosmological constant and of the total mass of the universe
in terms of ‘classical’ fundamental constants. |
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Keywords: | Gravitation Dark energy Minimum mass Dark energy particles |
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