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In this letter we address some of the issues raised in the literature aboutthe conflict between a large vacuum energy density, apriori predicted byquantum field theory, and the observed dark energy which must be the energy ofvacuum or include it. We present a number of arguments against this claim andin favour of a null vacuum energy. They are based on the following arguments: Anew definition for the vacuum in quantum field theory as a frame-independentcoherent state; Results from a detailed study of condensation of scalar fieldsin FLRW background performed in a previous work; And our present knowledgeabout the Standard Model of particle physics. One of the predictions of thesearguments is the confinement of nonzero expectation value of Higgs field toscales roughly comparable with the width of electroweak gauge bosons orshorter. If the observation of Higgs by the LHC is confirmed, accumulation ofrelevant events and their energy dependence in near future should allow tomeasure the spatial extend of the Higgs condensate.

Issues with vacuum energy as the origin of dark energy