SEARCH

SEARCH BY CITATION

Keywords:

  • Accelerated expansion;
  • cosmological constant;
  • quantum vacuum energy;
  • Casimir effect;
  • dark energy.

Abstract

We have derived the quantum vacuum pressure pvac as a primary entity, removing a trivial and a gauge terms from the cosmological constant-like part (the zeroth term) of the effective action for a matter field. The quantum vacuum energy density

  • equation image

appears a secondary entity, but both are of expected order. Moreover pvac and

  • equation image

are dynamical, and therefore they can be used in the Einstein equations. In particular, they could dynamically support the holographic dark energy model as well as the “thermodynamic” one.