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Laboratory tests on dark energy
- Physics
- 2006
The physical nature of the currently observed dark energy in the universe is completely unclear, and many different theoretical models co-exist. Nevertheless, if dark energy is produced by vacuum…
What measurable zero point fluctuations can(not) tell us about dark energy
- Physics
- 2006
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…
Dark energy and Josephson junctions
- Physics
- 2009
It has been recently claimed that dark energy can be (and has been) observed in laboratory experiments by measuring the power spectrum SI(ω) of the noise current in a resistively shunted Josephson…
ZEROPOINT FLUCTUATIONS AND DARK ENERGY IN JOSEPHSON JUNCTIONS
- Physics
- 2007
We discuss the possibility that vacuum fluctuations underlying dark energy could lead to measurable effects for the quantum noise spectrum in Josephson junctions [C. Beck, M. C. Mackey, Phys. Lett.…
Possible Measurable Effects of Dark Energy in Rotating Superconductors
- Physics
- 2009
We discuss recent laboratory experiments with rotating superconductors and show that three so far unexplained experimentally observed effects (anomalous acceleration signals, anomalous gyroscope…
DARK ENERGY, CHAOTIC FIELDS, AND FUNDAMENTAL CONSTANTS
- Physics
- 2006
To explain the currently observed accelerated expansion of the universe, a large number of different theoretical models are presently being discussed. In one way or another, all of these contain ‘new…
Dark Energy:. Recent Developments
- Physics
- 2006
A six-parameter cosmological model, involving a vacuum energy density that is extremely tiny compared to fundamental particle physics scales, describes a large body of increasingly accurate…
ELECTROMAGNETIC DARK ENERGY
- Physics
- 2008
We introduce a new model for dark energy in the Universe in which a small cosmological constant is generated by ordinary electromagnetic vacuum energy. The corresponding virtual photons exist at all…
References
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Physics invites the idea that space contains energy whose gravitational effect approximates that of Einstein's cosmological constant, Lambda: nowadays the concept is termed dark energy or…
Quantum noise in a current-biased Josephson junction
- Physics
- 2003
Quantum fluctuations in a current-biased Josephson junction, described in terms of the RCSJ model, are considered. The fluctuations of the voltage and phase across the junction are assumed to be…
Measurements of quantum noise in resistively shunted Josephson junctions
- Physics, Materials Science
- 1982
Measurements have been made of the low-frequency spectral density of the voltage noise in current-biased resistively shunted Josephson tunnel junctions under conditions in which the noise mixed-down…
Chaotic scalar fields as models for dark energy
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- 2004
We consider stochastically quantized self-interacting scalar fields as suitable models to generate dark energy in the universe. Second quantization effects lead to new and unexpected phenomena is the…
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We discuss the distribution function for the current noise in Quantum point contacts. Special interest is paid to contact of a superconductor with a normal metal. A new derivation of the…
First-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Determination of Cosmological Parameters
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WMAP precision data enable accurate testing of cosmological models. We find that the emerging standard model of cosmology, a flat Λ-dominated universe seeded by a nearly scale-invariant adiabatic…
Hilbert spectroscopy from gigahertz to terahertz frequencies by high-Tc Josephson junctions
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First-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Preliminary Maps and Basic Results
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We present full-sky microwave maps in five frequency bands (23-94 GHz) from the Wilkinson Microwave Anisotropy Probe (WMAP) first-year sky survey. Calibration errors are less than 0.5%, and the low…
The Quantum Vacuum: An Introduction to Quantum Electrodynamics
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(Chapter Heading): Zero-Point Energy in Early Quantum Theory. The Electromagnetic Vacuum. Some QED Vacuum Effects. Nonrelativistic Theory of Atoms in Vacuum. Interlude: Radiation Reaction. The Vacuum…