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A Negative Mode About Euclidean Wormhole
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Wormholes -- solutions to the euclidean Einstein equations with non-trivial topology -- are usually assumed to make real contributions to amplitudes in quantum gravity. However, we find a negative mode among fluctuations about the Giddings-Strominger wormhole solution. Hence, the wormhole contribution to the euclidean functional integral is argued to be purely imaginary rather than real, which suggests the interpretation of the wormhole as describing the instability of a large universe against the emission of baby universes.
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Cited by 2 Pith papers
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Euclidean wormholes stability analysis revisited
Even-parity perturbations of Euclidean axion wormholes have finite, positive quadratic actions when the constraint equations are solved differently, so prior exclusions of these modes were artifacts and the known stab...
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Type IIB Axion--Dilaton Wormholes and the BPS Limit Hessian
In the axion charge sector of Type IIB, the E=0 BPS instanton has a physical Hessian that factorizes as Q dagger Q, interpreted as an endpoint theorem beyond stability for E>0 wormholes, with separation of throat from...
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