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- W2890600323 endingPage "056" @default.
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- W2890600323 abstract "The O(4)-symmetric regular instanton solutions are studied within the framework of the Eddington-inspired-Born-Infeld gravity (EiBI). We find that the behavior of the solution would deviate from that in Einstein gravity when the kinetic energy of the scalar field is sufficiently large. The tunneling probability is calculated numerically in different parameter space. We find that the tunneling probability would increase with the Born-Infeld coupling constant, which is assumed to be positive in this paper. Furthermore, we discover a neck feature in the physical instanton solutions when the kinetic energy of the scalar field is sufficiently large. This feature can be interpreted as a Lorentzian time-like wormhole geometry formed during the bubble materialization." @default.
- W2890600323 created "2018-09-27" @default.
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- W2890600323 date "2018-10-29" @default.
- W2890600323 modified "2023-09-27" @default.
- W2890600323 title "Regular instantons in the Eddington-inspired-Born-Infeld gravity: Lorentzian wormholes from bubble nucleations" @default.
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- W2890600323 doi "https://doi.org/10.1088/1475-7516/2018/10/056" @default.
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