Witten's paper.Strings+Twitor space

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In summary, this paper discusses the concept of parity invariance for strings in twistor space, which is a target for topological string theory. It also addresses the issue of left-right symmetry, proving that tree diagrams computed from connected $D$-instanton configurations are parity-symmetric. This result has implications for loop diagrams as well. This is the last paper by Edward Witten on strings before he renounces string theory. The paper also mentions the contributions of Andy Neitzke and Lubos Motl, as cited in Witten's work.
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http://arxiv.org/abs/hep-th/0403199


Parity Invariance For Strings In Twistor Space
Authors: Edward Witten
Comments: 18 pp

Topological string theory with twistor space as the target makes visible some otherwise difficult to see properties of perturbative Yang-Mills theory. But left-right symmetry, which is obvious in the standard formalism, is highly unclear from this point of view. Here we prove that tree diagrams computed from connected $D$-instanton configurations are parity-symmetric. The main point in the proof also works for loop diagrams




Is this the last paper of Witten about strings before he renounces to string theory?

oops sorry for the title. I meant "twistor" :redface:
 
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meteor said:
...
oops sorry for the title. I meant "twistor"

twitor-----pronounced twitter-----sounds fine to me (twitter means excitement: "in a twitter" and "all a-twitter", and also is a noise made by
large numbers of small birds)

Two PF posters, Andy Neitzke and Lubos Motl, are to be congratulated
on the fact that Witten cited papers coauthored by each.


[9] A. Neitzke and C. Vafa, “N = 2 Strings And The Twistorial Calabi-Yau,” hep-th/0402128.
...
...

[15] N. Berkovits and L. Motl, “Cubic Twistorial String Field Theory,” hep-th/0403187.
 
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No, this paper is not Witten's last paper about strings before he renounces string theory. In fact, Witten continues to contribute to the field of string theory and has published numerous papers on the subject since this one was published in 2004. This paper specifically explores the relationship between strings and twistor space, and how this perspective can shed light on certain properties of perturbative Yang-Mills theory. It also makes a significant contribution by proving that tree diagrams computed from connected $D$-instanton configurations are parity-symmetric. Overall, this paper is an important piece in Witten's ongoing research on string theory and its connections to other areas of physics.
 

1. What is Witten's paper about?

Witten's paper, "Strings+Twitor space," is about a theoretical framework in physics that combines string theory and twistor theory. It proposes a new way of looking at the fundamental building blocks of the universe and their interactions.

2. What is string theory?

String theory is a theoretical framework that describes the universe in terms of tiny, vibrating strings instead of point-like particles. It aims to reconcile the theories of general relativity and quantum mechanics, and is a leading candidate for a theory of everything.

3. What is twistor theory?

Twistor theory is a mathematical framework that describes the geometric and topological properties of spacetime. It was developed as an alternative to traditional approaches to quantum field theory and has been used to study gravitational and gauge theories.

4. How does Witten's paper contribute to these theories?

Witten's paper combines string theory and twistor theory in a way that provides a more complete and consistent description of the universe. It also offers new insights into the nature of spacetime and the fundamental forces of nature.

5. What implications does Witten's paper have for the future of physics?

Witten's paper is a significant contribution to the field of theoretical physics and has the potential to lead to new understandings of the universe. It may also provide a pathway for the unification of all the fundamental forces and a complete theory of quantum gravity.

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