### First Course: String Theory

Barton Zwiebach is a respected teacher at MIT and a well

-known researcher in the field of string theory. Here is a

great book written by him with the goal of making string

theory accessible to advanced undergraduates:

**A First Course in String Theory**

--

**Barton Zwiebach**

Cambridge U. Press, New York, 2004. $65.00 (558 pp.).

ISBN 0-521-83143-1

String theory aimed to give mankind the theory of everything

with its elegant mathematical formulation using the beautiful

symmetries of mathematics and presumably of the nature.

Many saw a great prospect of covering the whole realm

of the physical world by a single underlying theory. It promised of a well -behaved

quantum theory of gravity that would also unify all four fundamental interactions

of nature.

However, years of research by some of the best minds in Physics and

Mathematics have failed to sustain the initial enthusiasm that it generated

especially in 1980s. The reason is the lack of experimental evidence supporting

the theory and its twin cornerstones: supersymmetry and extra spatial

dimensions. String theorists have struggled to come up with testable predictions

that could vindicate their ideas. It has gone far ahead of the current day

technology which even struggles to validate some of the ideas and concepts of

the so-called Standard Model of particle physics (and not to mention the large

amount of money it needs to pursue such experimental studies -- a factor

that caused chronic problems in high energy physics research).

We donot know if in our lifetime we would be able to see any real breakthrough

in the understanding of the underlying theory that would come from String

theory -- but String theory would still remain to an elegant beautiful creation

by some of the best intellects of the world.

This book is a great one for students as well as seasoned researchers and gives

very well-explained introduction to entities like light-cone gauge, D-branes,

Dp-branes, T-duality of closed and open strings, 11D M-theory, and so on so

forth -- the terms which you cannot expect to stumble upon in all other kinds

of Physics.

**Useful Link:**The best website for starting to know more about String theory

is this website designed and managed by Patricia Schwarz, wife of the

celebrated Physics Professor of Caltech, John Schwarz. During the mid-1980s

John Schwarz and Michael Green energized the whole field by showing that

the infinities of the theory can be tamed by supersymmetry, a concept that

generated lot of enthusiasm at that time. As a bonus, they also predicted the

dimensionality of spacetime to be 10 -- and not just 4. So, explore and enjoy

the site: http://superstringtheory.com/

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