Why This Universe? AUA: Changing Dark Energy, Twin Paradox, and What's Next for CERN
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May 2, 2025 Dive into the intricacies of the twin paradox and how time dilation shapes our understanding of reality. Explore the fascinating implications of dark energy and the evolving landscape of cosmology. The discussion also touches on supermassive black holes and cosmic expansion, revealing the mysteries of the universe. Delve into the future of particle physics at CERN, alongside meaningful debates on the S8 tension in cosmology. Finally, challenge your perceptions of time, energy, and the philosophical implications of free will.
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Clarifying the Twin Paradox
- The twin paradox is about different time passage between frames, not about communication delays.
- When the traveling twin returns, they are younger due to slower ticking clocks at near-light speeds.
Neutrino Decoherence and Quantum Gravity
- Quantum decoherence might cause neutrino flavor oscillations to lose information.
- IceCube detects no decoherence yet, but future broader energy range analyses may uncover quantum gravity effects.
Evolving Dark Energy Candidates
- Evolving dark energy models require ultra-light scalar particles with long-range forces.
- Axionic dark energy with derivative couplings could avoid solar system constraints and remain undetected.