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Quantum simulation of traversable wormhole spacetimes in a dc-SQUID array
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We present an analog quantum simulator of spacetimes containing traversable wormholes. A suitable spatial dependence in the external bias of a dc-SQUID array mimics the propagation of light in a 1D wormhole background. The impedance of the array places severe limitations on the type of spacetime that we are able to implement. However, we find that wormhole throat radius in the sub-mm range are achievable. We show how to modify this spacetime in order to allow the existence of closed timelike curves. The quantum fluctuations of the phase associated to the finite array impedance might be seen as an analogue of Hawking's chronology protection mechanism.
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Cited by 1 Pith paper
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Analogue simulation of quantum gravity black hole models in a dc-SQUID array
The authors derive the magnetic flux patterns a dc-SQUID array would need to simulate light propagation in a bouncing black-hole-white-hole spacetime, and argue the downstream configuration is the more practical one.
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