Non-supersymmetric heterotic string compactifications on AdS4 x S3 x S3 with two fluxes develop tachyonic instabilities when fluxes are close in magnitude and show inverse scale separation when far apart, but brane nucleation always provides a decay channel that drives the fluxes together.
De sitter cosmology on an expanding bubble
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Casimir-stabilized AdS vacua with parametric scale separation in supergravity exhibit perturbative and non-perturbative instabilities under deformations.
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Non-supersymmetric heterotic strings on $AdS_{4}\times S^{3}\times S^{3}$
Non-supersymmetric heterotic string compactifications on AdS4 x S3 x S3 with two fluxes develop tachyonic instabilities when fluxes are close in magnitude and show inverse scale separation when far apart, but brane nucleation always provides a decay channel that drives the fluxes together.
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Instabilities in scale-separated Casimir vacua
Casimir-stabilized AdS vacua with parametric scale separation in supergravity exhibit perturbative and non-perturbative instabilities under deformations.