The Gravitino Swampland Conjecture

Abstract

We extend the swampland from effective field theories (EFTs) inconsistent with quantum gravity to EFTs inconsistent with quantum supergravity. This enlarges the swampland to include EFTs that become inconsistent when the gravitino is quantized. We propose the Gravitino Swampland Conjecture: the gravitino sound speed must be non-vanishing in all EFTs that are low energy limits of quantum supergravity. This seemingly simple statement has important consequences for both theories and observations. The conjecture is consistent with and supported by the KKLT and LVS scenarios for moduli stabilization in string theory.

arXiv comment6 pages, 2 figures. v2: version accepted to PRL

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Cited by in corpus (8)

• The Gravitino and the Swampland
• A Gravitino Distance Conjecture
• Catastrophic Production of Slow Gravitinos
• Salvage of Too Slow Gravitinos
• Minimal Supergravity Inflation without Slow Gravitino
• Geometry of orientifold vacua and supersymmetry breaking
• Constrained Superfields in Dynamical Background
• Gravitino thermal production