Physics - Tension for a Hubble-Tension Solution
An early-Universe spike in dark energy could resolve a disagreement between two cosmic-expansion-rate measurements, but such a spike may conflict with observations of quasar spectra.
Source: aps.org
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Physics - Photonic Picture of High Harmonics
A new interpretation of high-harmonic generation—the cornerstone of attosecond physics—paves the way for quantum applications of this process.
Source: aps.org
Physics - It's a Trap—for Lanthanides
Trapping and imaging single dysprosium atoms extends the utility of optical tweezer arrays to electronically complex species, opening the door to new quantum physics studies.
Source: aps.org
Physics - Solution for Atomic Clock Puzzle
The resolution of a major discrepancy between theory and experiment for strontium atomic clocks could help improve the precision of these timekeepers.
Source: aps.org
Physics - Measuring the Intensity of the World's Most Powerful Lasers
Electrons can help infer laser intensities that are too high to measure using conventional methods.
Source: aps.org