Wormhole effects in theories with imaginary massless scalars set an upper limit on analytic continuation of couplings to imaginary values, with string theory examples showing the low-energy theory breaks down at or before this bound.
Aguilar-Gutierrez, T
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The paper identifies a variety of Euclidean saddle solutions including wormholes and oscillatory configurations in Einstein-Scalar-Maxwell models, demonstrates how oscillations are controlled by lifting flat potential directions, finds phase transitions, and shows analytic continuation to FLRW cosm
Euclidean wormholes enlarge the semiclassical initial-condition landscape for the universe in a physically rich manner that aligns with holographic expectations and supports early-universe model building.
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Wormholes and the imaginary distance bound
Wormhole effects in theories with imaginary massless scalars set an upper limit on analytic continuation of couplings to imaginary values, with string theory examples showing the low-energy theory breaks down at or before this bound.
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The paper identifies a variety of Euclidean saddle solutions including wormholes and oscillatory configurations in Einstein-Scalar-Maxwell models, demonstrates how oscillations are controlled by lifting flat potential directions, finds phase transitions, and shows analytic continuation to FLRW cosm
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Before the Bang: Wormholes at the Dawn of the Universe
Euclidean wormholes enlarge the semiclassical initial-condition landscape for the universe in a physically rich manner that aligns with holographic expectations and supports early-universe model building.