The membrane paradigm for a dynamic wormhole
classification
🌀 gr-qc
hep-th
keywords
dynamicmembranemodelthroatwormholeaccelerationbulkclassical
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A classical membrane model is developed for a dynamic wormhole. Its throat expands hyperbolically with an acceleration proportional to the surface energy density $\sigma$. The model leads to a negative bulk viscosity coefficient $\zeta = - 1/6 \pi$ on the throat, expressing the instability against perturbations (expansions or contractions).
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