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- 26 Apr 2022, 12:25
- Forum: HowTos and FAQ for TeNPy
- Topic: calculate four-point correlation function
- Replies: 1
- Views: 2316
calculate four-point correlation function
Hello. Recently, I have calculated the four-point correlation function \braket{C^\dagger_{\downarrow,i} C^\dagger_{\uparrow,i+1} C_{\downarrow,j+1} C_{\uparrow,j}} by using the expectation_value_term(). def correlation(psi,a,b,c,d): L = psi.L f = np.zeros((L-1,L-1),dtype=complex) for i in range(L-1)...