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4 votes
1 answer
646 views

Dimension of Hamiltonian & Diagonalizability

Often in condensed matter physics literature, one encounters a Hamiltonian that goes something like : $$ H = \sum_{i=1}^{n} J_{i}\ S_{i}^{z} S_{i+1}^{z}, $$ where $J_{i}$ are the coupling constants, $...
self.grassmanian's user avatar
1 vote
1 answer
100 views

Why are the autocorrelations larger for the energy at the critical temperature?

Considering a simulation with the Swendsen-Wang algorithm for the 3-D cubic lattice I wanted to have a look at the auto-correlations, and expecting it to be quite small considering Swendsen-Wang is a ...
B. Brekke's user avatar
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