358 | Solo: Vacuum Energy and the Cosmological Constant

358 | Solo: Vacuum Energy and the Cosmological Constant

The most surprising discovery in fundamental physics during my career as a scientist was undoubtedly the acceleration of the universe, announced in 1998. The most straightforward explanation for these observations is a positive cosmological constant, or vacuum energy. I talk about the origin of the idea with Einstein, how quantum physicists started to think about it and understand the "cosmological constant problem," as well as how its discovery also raised the "coincidence problem." This is the first of two connected solo episodes; the next will be on theories of dark energy that are not the cosmological constant.

Blog post with transcript: https://www.preposterousuniverse.com/podcast/2026/06/22/358-solo-vacuum-energy-and-the-cosmological-constant/

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Jaksot(432)

357 | Jeff Coller on mRNA, Vaccines, and Bespoke Therapeutics

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356 | Andrea Wulf on Enlightenment, Nature, Romanticism, and Modernity

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355 | Solo: Looking Quantum Mechanics in the Eyeball

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354 | Christian List on Free Will and Levels of Reality

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18 Touko 1h 26min

353 | Alvin Roth on the Economics of Morally Contested Markets

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11 Touko 1h 11min

AMA | May 2026

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4 Touko 4h 6min

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