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Polchinski wrote the two-volume textbook String Theory, published in 1998. Among his many contributions to theoretical physics, D-branes are the best known. In 2008 he won the Dirac Medal for his work in superstring theory. [9] He was awarded the 2017 Breakthrough Prize in Fundamental Physics in recognition of his contributions to theoretical ...
D-branes were discovered by Jin Dai, Robert Leigh, and Joseph Polchinski, [1] and independently by Petr HoĊava, [2] in 1989. In 1995, Polchinski identified D-branes with black p-brane solutions of supergravity, a discovery that triggered the second superstring revolution and led to both holographic and M-theory dualities.
'Superstring theory' is a shorthand for supersymmetric string theory because unlike bosonic string theory, ... Polchinski, Joseph (1998a). String Theory Vol. 1: ...
String theory is a theoretical framework that attempts to address these questions. The starting point for string theory is the idea that the point-like particles of particle physics can also be modeled as one-dimensional objects called strings. String theory describes how strings propagate through space and interact with each other.
In string theory, the strings may be open (forming a segment with two endpoints) or closed (forming a loop like a circle) and may have other special properties. [1] Prior to 1995, there were five known versions of string theory incorporating the idea of supersymmetry (these five are known as superstring theories) and two versions without supersymmetry known as bosonic string theories, which ...
Polchinski, Joseph (1998) String Theory. Cambridge University Press. Vol. 1: An introduction to the bosonic string. ISBN 0-521-63303-6. Vol. 2: Superstring theory and beyond. ISBN 0-521-63304-4. Szabo, Richard J. (Reprinted 2007) An Introduction to String Theory and D-brane Dynamics. Imperial College Press. ISBN 978-1-86094-427-7.
Polchinski's review states, "In the end, these [Smolin and others'] books fail to capture much of the spirit and logic of string theory." Motl's review goes on to say "the concentration of irrational statements and anti-scientific sentiments has exceeded my expectations," and,
It is often convenient to use the democratic formulation of type II string theories, which was introduced by Paul Townsend in p-Brane Democracy.In D-brane Wess-Zumino Actions, T-duality and the Cosmological Constant Michael Green, Chris Hull and Paul Townsend constructed the field strengths and found the gauge transformations that leave them invariant.