Dynamic selection of string vacua
According to Laura Mersini-Broughton string theory implies that a myriad of possible 'starter universes' are appearing all the time, but only ones that start with high energy and low entropy survive to undergo rapid cosmological inflation - a process she terms 'dynamic selection'.
The successful 'survivor universes' are selected by allowing the wave function of the universe to propagate on a vast 'landscape' of vacua implied by string theory - up to 10500. Mersini-Broughton contends that this explanation avoids the need for anthropic selection inherent in other multiverse explanations.