# The interacting multiverse and its effect on the cosmic microwave background

@article{BouhmadiLpez2019TheIM, title={The interacting multiverse and its effect on the cosmic microwave background}, author={Mariam Bouhmadi-L{\'o}pez and Manuel Kr{\"a}mer and Jo{\~a}o Morais and Salvador Robles-P{\'e}rez}, journal={Journal of Cosmology and Astroparticle Physics}, year={2019}, volume={1902}, pages={057-057} }

We study a toy model of a multiverse consisting of canonically quantized universes that interact with each other on a quantum level based on a field-theoretical formulation of the Wheeler-DeWitt equation. This interaction leads to the appearance of a pre-inflationary phase in the evolution of the individual universes. We analyze scalar perturbations within the model and calculate the influence of the pre-inflationary phase onto the power spectrum of these perturbations. The result is that there… CONTINUE READING

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