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Entanglement entropy of the infinite transverse field Ising chain at the critical point

These few-site entropies tend to converge fairly fast with finite size, because they ultimately depend on very local physics. If you switch to DMRG you should easily see the values converge fully. You ...
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3 votes

Weyl Anomaly for Old Covariant Quantization in String Theory?

In lightcone quantization the mass of a level $N$ state is given by $m^2 \sim ( N - \frac{D-2}{24} )$. The $N=1$ transforms in a rep of $SO(D-2)$. This is because in lightcone quantization there are $...
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1 vote

What's wrong with my argument about entanglement entropy in QFT being time-independent?

You are implicitly making a very strong assumption in your argument. Given $$ H=H_A+H_{\bar A}, $$ $$ e^{\pm iHt}=e^{\pm i(H_A+H_{\bar A})~t} $$ is true, but your next step $$ e^{\pm i(H_A+H_{\bar A})~...
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1 vote

Is the action of any interacting 6D CFT known?

When it comes to conformal field theories, it is almost always useful to think about the low-lying scaling dimensions of their local operators. If a CFT has an action, then it has a local operator ...
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