Partitioning Inverse Monte Carlo Iterative Algorithm for Finding the Three Smallest Eigenpairs of Generalized Eigenvalue Problem

Table 1

Number of chains 𝑁=80.

Dimension	Eigenvalues error			Eigenvectors error
	𝜆^1(1)	𝜆^1(2)	𝜆^1(3)	𝑣^1(1)	𝑣^1(2)	𝑣^1(3)
64×64	1.26×10^−7	4.5×10^−7	1.26×10^−6	8.36×10^−4	.002813	.008154
128×128	1.18×10^−7	4.46×10^−7	1.33×10^−6	6.33×10^−4	.002534	.008074
256×256	6.48×10^−8	4.37×10^−7	1.51×10^−6	3.16×10^−4	.002151	.008070
512×512	7.91×10^−8	2.87×10^−7	1.72×10^−6	1.83×10^−4	.001284	.007759
1024×1024	7.04×10^−8	1.99×10^−7	1.79×10^−6	1.06×10^−4	.000712	.00769