I recomend reading Parallel worlds by Michio Kaku - theories from GLP

It is written in a way that the average person can comprehend the subject, so don't expect reams of maths or complex deails of evidence behind theory.

A snippet
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STRANGE as the idea of other universes is, it has become almost commonplace in physics. Parallel worlds are central to one interpretation of quantum mechanics. Inflation versions of the cosmological theory also imply that there is an infinite tree of branching universes. Cosmologists have even suggested that there could be parallel universes a millimetre away along some higher dimension.

In Parallel Worlds, Michio Kaku explores this conjectured multiverse with a particular end in mind. Our own universe is likely to become inhospitable to life one day, and Kaku believes that a sufficiently advanced civilisation might be able to escape this universe and find a home in a parallel world.

It is an appealing idea, but Kaku's book is slightly frustrating. There are fine, lucid passages and some nicely told personal stories, but also explanations that are thoroughly confusing or irrelevant. We do not need the detailed historical development of string ...

all that we see, or seem, is but a dream within a dream

paradox's everywhere.

parallel world