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cs.DS2019★ 1 cited
Zeros of ferromagnetic 2-spin systems
Heng Guo, Jingcheng Liu, Pinyan Lu
We study zeros of the partition functions of ferromagnetic 2-state spin systems in terms of the external field, and obtain new zero-free regions of these systems via a refinement o…
cs.CC2019
Correlation decay and partition function zeros: Algorithms and phase transitions
Jingcheng Liu, Alistair Sinclair, Piyush Srivastava
We explore connections between the phenomenon of correlation decay and the location of Lee-Yang and Fisher zeros for various spin systems. In particular we show that, in many insta…