2000 character limit reached
A Cosmological Constant That is Too Small
Published 19 Jul 2021 in hep-th, gr-qc, and hep-ph | (2107.09065v2)
Abstract: We construct a vacuum of string theory in which the magnitude of the vacuum energy is $< 10{-123}$ in Planck units. Regrettably, the sign of the vacuum energy is negative, and some supersymmetry remains unbroken.
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