## Archive for the ‘**Errata**’ Category

## Errata for Basic Concepts of String Theory by Blumenhagen, Lüst and Theisen

This is an unofficial errata for the book *Basic Concepts of String Theory* by** **Ralph Blumenhagen, Dieter Lüst and Stefan Theisen. I couldn’t find an official errata, but I’ll probably discontinue this at some point when I do run into one.

**Chapter 2: The Classical Bosonic String**

- Page 8. The line below equation 2.3. There should be two dots, one each on and in the definition of .

**Chapter 8: The Quantized Fermionic String**

- Page 213: Equation 8.56. There is only one charge conjugation matrix in odd dimension d = 2n+1, either or . To find out which one it is, for odd , determine : if this is even, exists; if it is odd, exists. So, equation 8.56 is wrong: one should use for odd , and for even .To derive this criterion, compute and observe that it equals in general, which determines whether or . For a quick list of charge conjugation matrices in various dimensions and their symmetry properties, see page 11 of http://www.nikhef.nl/~t45/ftip/AppendixE.pdf.

**Chapter 14: String Compactifications**

- Page 510: Equation 14.262. The on the right-hand side in the local Lorentz transformation of the vielbein should be .

**Chapter 18: String Dualities and M-Theory**

- Page 690: The expression for in the paragraph below equation (18.26) has extra indices. It is the contraction of with .