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full name: tenpy.linalg.random_matrix.U_close_1
parent module: tenpy.linalg.random_matrix
tenpy.linalg.random_matrix
type: function
tenpy.linalg.random_matrix.
U_close_1
return an random orthogonal matrix ‘close’ to the identity.
size (tuple) – (n, n), where n is the dimension of the output matrix.
(n, n)
a (float) – Parameter determining how close the result is to the identity. \(\lim_{a \rightarrow 0} <|O-E|>_a = 0\) (where E is the identity).
U – Unitary matrix close to the identiy (for small a). Eigenvalues are chosen i.i.d. as exp(1.j*a*x) with x uniform in [-1, 1].
exp(1.j*a*x)
ndarray