In spin glass models the upper critical dimension is known to be 6, but recently it was discovered to be 8. What is the importance of upper critical dimension for spin glass models? We don't live in 6 dimensions nor 8; what does this physically represent and how can I understand it better?
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Somewhat related question. – Yvan Velenik Mar 28 '22 at 16:21
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That was actually helpful! Thanks. – benholstder Mar 28 '22 at 17:29