I am currently reading these lecture notes about string theory:(adsbygoogle = window.adsbygoogle || []).push({});

http://www.phys.uu.nl/~thooft/lectures/string.html

I think that I understand the general idea. After that it's simply applying QFT formalism, which I'm more or less familiar with (or so I thought). But in Chapter 7. - BRST quantization of the notes (p. 31) I encountered a few concepts and terms that I don't what mean: What's theDin equation (7.1) (does it have anything to do with the covariant derivative?) and what are "gaugeorbits"?

I haven't found anything about BRST quantization in Landau and Lif****z'sQuantum Electrodynamics, which is the only book I have on the subject. Google only gave me links to scientific papers exploring the procedure.

Also on page 34, they associate the world sheet of two interacting closed strings with the topology of a sphere, and the strings being topological "holes" in the sheet. It was my impression that the world sheet of a string was the string itself (p. 8); the two dimensional world sheet (proper time and a spatial coordinate along the string) is located in a higher dimensional space-time.

I thank you in advance for your help.

**Physics Forums - The Fusion of Science and Community**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Learning String Theory in high school

Loading...

Similar Threads for Learning String Theory | Date |
---|---|

A Best way to learn string theory? | May 28, 2017 |

I What can we learn from the Carlofest speakers' list? | Mar 4, 2016 |

Learning String Theory Online | Oct 21, 2013 |

Roadmap for learning String Theory? | Jun 28, 2013 |

What would be the pre-requisites to learn Topological Quantum Field Theory? | Jun 8, 2012 |

**Physics Forums - The Fusion of Science and Community**