Transfer matrix, section in Jan Smit's book on Lattice Fields theory

Click For Summary
SUMMARY

The discussion focuses on the transfer matrix as presented in Jan Smit's book "Introduction to Quantum Fields on a Lattice." The user seeks assistance in understanding and deriving equations (2.32) and (2.33) from the text. They have attempted to expand both sides of the equations using the operators \hat{p} and \hat{q} within the transfer matrix \hat{T} but are struggling to achieve the correct formulation. The user provides a specific expression involving exponential functions and derivatives, indicating their approach to solving the equations.

PREREQUISITES
  • Understanding of quantum field theory concepts
  • Familiarity with lattice field theory
  • Knowledge of operator notation in quantum mechanics
  • Ability to work with exponential operators and derivatives
NEXT STEPS
  • Study the derivation of transfer matrices in quantum field theory
  • Learn about the mathematical properties of exponential operators
  • Explore the application of perturbation theory in lattice field calculations
  • Review LaTeX formatting for mathematical expressions in online discussions
USEFUL FOR

Researchers, graduate students, and educators in theoretical physics, particularly those specializing in quantum field theory and lattice methods.

anony
Messages
13
Reaction score
0
Hi guys,

Basically I'm working through Jan Smit's book, http://books.google.com/books?id=pFgUFfG7JygC&printsec=frontcover&dq=introduction+to+quantum+fields+on+a+lattice&hl=en&src=bmrr&ei=mabWTOjtMoK4hAfh0eGGBQ&sa=X&oi=book_result&ct=result&resnum=1&ved=0CDIQ6AEwAA#v=onepage&q&f=false , and I'm struggling to show equations (2.32),(2.33). Would appreciate it if anyone could point me in the right direction.

I have thus far attempted to expand both sides. That is I made the replacements for \hat{p} and \hat{q} in \hat{T} and in the column vectors. But I don't see how I'm supposed to work any of it out? Am I going about this in the wrong way? For example, the top element in the vector \times \hat{T} should be

exp(\frac{-w^{2}}{4}q^{2}) exp(\frac{1}{2}\frac{\partial^{2}}{\partial q^{2}}) exp(-w^{2}\frac{q^{2}}{4}) \times -i \frac{\partial}{\partial q}

and similarly for all the other terms. Is this the right way to go about it?

Thanks in advance

(sorry, i can't immediately see how to include latex?)

EDIT: I was told that for some google books isn't working on that page, so here is a screen shot of just the section I'm struggling with:
http://img836.imageshack.us/img836/8466/probp.jpg
 
Last edited by a moderator:
Physics news on Phys.org
It's very difficult to see what the equation is, you need to begin with a tex (square bracketed) and end with a /tex (square bracketed.)
 
Last edited:

Similar threads

  • · Replies 5 ·
Replies
5
Views
2K
Replies
3
Views
2K
  • · Replies 1 ·
Replies
1
Views
2K
Replies
15
Views
3K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 5 ·
Replies
5
Views
8K
  • · Replies 1 ·
Replies
1
Views
4K
  • · Replies 4 ·
Replies
4
Views
2K
  • · Replies 7 ·
Replies
7
Views
7K
  • · Replies 2 ·
Replies
2
Views
2K