What is the Multiverse?

          @misc{ scivideos_PIRSA:08090043,
            doi = {10.48660/08090043},
            url = {https://pirsa.org/08090043},
            author = {Mersini-Houghton, Laura},
            keywords = {Cosmology},
            language = {en},
            title = {What is the Multiverse?},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2008},
            month = {sep},
            note = {PIRSA:08090043 see, \url{https://scivideos.org/pirsa/08090043}}
          }