What measurable zero point fluctuations can(not) tell us about dark energy

Details What measurable zero point fluctuations can(not) tell us about dark energy What measurable zero point fluctuations can(not) tell us about dark energy

2006-05-30

arxiv.org/abs/astro-ph/0605711v1

JCAP 0608 (2006) 010

Astronomy and Astrophysics

Astrophysics

4 pages

Scientific paper

10.1088/1475-7516/2006/08/010

We show that laboratory experiments cannot measure the absolute value of dark energy. All known experiments rely on electromagnetic interactions. They are thus insensitive to particles and fields that interact only weakly with ordinary matter. In addition, Josephson junction experiments only measure differences in vacuum energy similar to Casimir force measurements. Gravity, however, couples to the absolute value. Finally we note that Casimir force measurements have tested zero point fluctuations up to energies of ~10 eV, well above the dark energy scale of ~0.01 eV. Hence, the proposed cut-off in the fluctuation spectrum is ruled out experimentally.

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