project . 2006 - 2008 . Closed

Zero-point fluctuations in Josephson junctions - implications for dark energy

UK Research and Innovation
  • Funder: UK Research and InnovationProject code: EP/C531515/1
  • Funded under: EPSRC Funder Contribution: 62,957 GBP
  • Status: Closed
  • Start Date
    01 Feb 2006
    End Date
    31 Jan 2008
Description
Quantum fluctuations mean that the vacuum is not empty as it is assumed in classical physics. These fluctuations, also known as zero-point fluctuations, produce measurable effects in superconducting electronic devices (Josephson junctions). The energy of zero-point fluctuations, also called vacuum energy, could be responsible for the dark energy of the universe, a mysterious type of energy that is currently dominating the universe. If this is the case, one expects to see a cutoff at high frequencies in the measured frequency spectrum of current noise in Josephson junctions. Currently an experiment to test this hypothesis is being designed in the US and the first...
Description
Quantum fluctuations mean that the vacuum is not empty as it is assumed in classical physics. These fluctuations, also known as zero-point fluctuations, produce measurable effects in superconducting electronic devices (Josephson junctions). The energy of zero-point fluctuations, also called vacuum energy, could be responsible for the dark energy of the universe, a mysterious type of energy that is currently dominating the universe. If this is the case, one expects to see a cutoff at high frequencies in the measured frequency spectrum of current noise in Josephson junctions. Currently an experiment to test this hypothesis is being designed in the US and the first...
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