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3
questions
5
votes
2
answers
307
views
Two lines of critical points described by CFTs with different central charges intersect. What happens?
There is a lovely set of two-parameter spin chains that can be mapped to quadratic fermions and studied quite exactly:
$$H = -\sum_{i} \frac{1+\gamma}{2}\sigma^x_i\sigma^x_{i+1}+\frac{1-\gamma}{2}\...
6
votes
1
answer
550
views
Log-law entanglement with large central charge contradict bounds on the entanglement entropy
I am trying to learn more about entanglement entropy in large but finite-size systems at critical points. I am still relatively new to conformal field theory, so it is not unlikely I have ...
1
vote
0
answers
214
views
What is the central charge of the disordered $q$-state Potts model, for large $q$?
The central charge of a model, is, heuristically related to the number of microscopic degrees of freedom. Is there a simple argument for the asymptotic behavior of the central charge for the ...