Thursday, June 28, 2012

Brian Greene - Strings, Multiverse and Black hole electron

Picture from the official website
Professor Brian Greene has the gift and motivation to put extremely complex scientific things into exceptionally clear sentences. He has even written a book for children which I think shows something very positive about his personality as does appearing in the Big Bang Theory series as himself.  

Stephen Hawking sometimes puts off people with religious beliefs by opening his lecture saying "I will now show you how the world was born without a god." Brian Greene seems to be very careful when talking about religion emphasizing not his own views but the need for mutual respect between people from various backgrounds.

The careful way Brian Greene talks about world views and religions makes him as a person less interesting from a theological point. The subject matters that he so aptly introduces are, on the other hand, of utmost interest!

Here are some excerpts from an wikipedia article introducing this famous scientist and writer.
Brian Greene (1963) is an American theoretical physicist and string theorist. He has been a professor at Columbia University since 1996.

Greene's area of research is string theory, a candidate for a theory of quantum gravity.

String theory attempts to explain the different particle species of the standard model of particle physics as different aspects of a single type of one-dimensional, vibrating string.

One peculiarity of string theory is that it postulates the existence of extra dimensions of space – instead of the usual four dimensions, there must be ten spatial dimensions and one dimension of time to allow for a consistently defined string theory. The theory has several explanations to offer for why we do not perceive these extra dimensions, one being that they are "curled up" (compactified, to use the technical term) and are hence too small to be readily noticeable.

In the field, Greene is best known for his contribution to the understanding of the different shapes the curled-up dimensions of string theory take on. The most important of these shapes are so-called Calabi-Yau manifolds; when the extra dimensions take on those particular form, physics in three dimensions exhibits an abstract symmetry known as supersymmetry.

He is also known for his research on the flop transition, a mild form of topology change, showing that topology in string theory can change at the conifold point.

Currently, Greene studies string cosmology, especially the imprints of trans Planckian physics on the cosmic microwave background

brane-gas cosmologies that could explain why the space around us has three large dimensions, expanding on the suggestion of a black hole electron, namely that the electron may be a black hole.

Three books by Brian Greene
The Elegant Universe: Superstrings, Hidden Dimensions, and the Quest for the Ultimate Theory, (1999) is a popularization of superstring theory and M-theory.

The Fabric of the Cosmos: Space, Time, and the Texture of Reality (2004), is about space, time, and the nature of the universe.

Aspects covered in this book include non-local particle entanglement as it relates to special relativity and basic explanations of string theory. It is an examination of the very nature of matter and reality, covering such topics as spacetime and cosmology, origins and unification, and including an exploration into reality and the imagination.

The Hidden Reality: Parallel Universes and the Deep Laws of the Cosmos (2011), deals in greater depth with multiple universes, or, as they are sometimes referred to collectively, the multiverse.

Introductory text picked from wikipedia artcile on professor Brian Greene.Read the entire article from here.

No comments:

Post a Comment