Journal
PHYSICAL REVIEW B
Volume 78, Issue 22, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.78.220401
Keywords
Ising model; magnetic transitions; renormalisation; spin glasses
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The existence of an Almeida-Thouless (AT) instability surface below the upper critical six dimensions is demonstrated in the generic replica symmetric field theory. Renormalization flows from around the zero-field fixed point are investigated. By introducing the temperature and magnetic-field dependence of the bare parameters, the fate of the AT line can be followed from mean field (d=infinity) down to d=6-epsilon.
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