Steven Weinberg
Abstract
Astronomical observations indicate that the cosmological constant is many orders of magnitude smaller than estimated in modern theories of elementary particles. After a brief review of the history of this problem, five different approaches to its solution are described.
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Astronomical observations indicate that the cosmological constant is many orders of magnitude smaller than estimated in modern theories of elementary particles. After a brief review of the history of this problem, five different approaches to its solution are described.
Key concepts: Physics, Cosmological constant, Cosmological constant problem, Constant (computer programming), Theoretical physics, Cosmology, Astrophysics, Dark energy