On spectrum of vacuum energy
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Authors
Date
2009
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Language
en
Pages
1-10
Series
Journal of Physics: Conference Series, Volume 174, issue 1
Abstract
We discuss the problem of the spectral function of vacuum energy. In traditional approach the ultraviolet divergencies of the vacuum energy are cancelled by imposing relations between different quantum fields and their masses. The emergent theories suggest that the microscopic degrees of the underlying quantum vacuum add to the spectral function and their contribution cancels the diverging zero point energy of quantum fields. Examples of the spectral function of the vacuum energy in the condensed-matter systems with relativity emerging at low energy are presented. In the Sakharov induced gravity situation may be even more dramatic: only microscopic (Planck scale) constituent fields contribute to the vacuum energy, while the diverging zero-point energy of emergent quantum field (gravitational field) is missing. On the other hand consideration of the fermionic condensed matter systems suggests that emergent relativistic fermionic quasiparticles contribute in conventional way as Dirac vacuum.Description
Keywords
vacuum energy
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Citation
Volovik , G 2009 , ' On spectrum of vacuum energy ' , Journal of Physics: Conference Series , vol. 174 , no. 1 , 0120071 , pp. 1-10 . https://doi.org/10.1088/1742-6596/174/1/012007