Random Max-CSPs Inherit Algorithmic Hardness from Spin Glasses
summary
Shows that for any dense-enough sparse random max-CSP the optimal satisfiable fraction equals a random-assignment baseline plus an explicit 1/√α second-order term equal to the ground-state energy density of a spin-glass whose mixture polynomial is the predicate’s noise-stability. Proof uses Poissonization, a generalized Guerra-Toninelli interpolation and multi-overlap coupling to transfer branching OGP geometry from spin glasses, yielding that overlap-concentrated algorithms (including local classical/quantum and bounded-round AMP families) cannot beat the ALG threshold.
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chapters (8)
- 0:00Introduction
- 5:33Results
- 8:55corollaries
- 10:50informal definitions
- 15:10proof ideas
- 17:37optimal values
- 18:53key insights
- 21:35open questions
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