Peaks and Rings on the Cosmic Microwave Background

We simulate maps of the microwave background radiation for a model of inflationary primordial voids plus standard cold dark matter. For some values of the parameters, we find in the angular power spectrum a well-defined second peak at l~1000, correlated with the size, amplitude, and number of the primordial voids. The next generation of microwave background maps will be able to test the scenario of inflationary first-order phase transitions.

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