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cond-mat.stat-mech2024
Order parameters in quasi-1D spin systems
Garry Goldstein
In this work we extend the notion of what is meant by a meanfield. Meanfields are approximately maps - through some self consistency relation - of a complex, usually manybody, prob…
cond-mat.stat-mech2024
The Wilson-Fisher Fixed point revisited: importance of the form of the cutoff
Garry Goldstein
In this work we re-examine the Wilson Fisher fixed point. We study Wilsonian momentum space renormalization group (RG) flow for various forms of the cutoff. We show that already at…
cond-mat.stat-mech2024
Classical action for the height within the Kardar-Parisi-Zhang (KPZ) equation for surface growth
Garry Goldstein
In this work we write down a classical (not quantum) action for the surface height for the Kardar-Parisi-Zhang (KPZ) equation for surface growth. We do so starting with the regular…