Tagged Questions
1
vote
1answer
105 views
Renormalization Group and Ising with d=1 and D=1
I have a question about the results of RG on Ising model. I know it's possible to obtain two couple of relations
$K'(K)$, $q(K')$
$K(K')$, $q(K)$
between the coupling costants. My problem arise ...
3
votes
1answer
77 views
Freedom in the Choice of a Beta Functions in RG
Assume we're given a certain statistical model, say the infinite range Ising model
\begin{equation}
H_{N}\{\vec\sigma_{N}\}~=~ - \frac{x_{N}}{2N} \sum_{i,j =1}^{N} \sigma_{i} \sigma_{j}
...
2
votes
1answer
103 views
What's the meaning of the coupling change after a renormalization (in the 1-dim Ising Model)?
What does it mean that after the theory (1-dim Ising model here, but the question is general) is renormalized one time and $g_i\rightarrow g_i'$, that the couplings are weaker, even if the theory ...
3
votes
1answer
167 views
Scaling with the Ising Model
I am stuck with one formula in the CFT book by Di Francesco and al. Chapter 3. Equation 3.46 third step, for those who don't have the book, he integrates out degrees of freedom from the Ising Model by ...
2
votes
2answers
291 views
Identifying a critical phenomena?
I have a system with a number of measurables (in time). Some measurables are discrete some are continuous (within the measurement accuracy). How can I determine whether my system experiences ...
