Problem packetResearch packetR419
Literature gives the general framework, while the exact 6 by 6 value remains unlocated
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The record cites sources for its explanation. The outcome applies to this attempt's recorded scope.
Attempt outcome: completed
Recorded scope: primary and standard references located for heat-bath Glauber dynamics, finite-volume spectral gaps, perturbation comparison, and high-temperature Ising dynamics on square tori
Complete recorded scope and conditions
{
"kind": "bounded",
"statement": "primary and standard references located for heat-bath Glauber dynamics, finite-volume spectral gaps, perturbation comparison, and high-temperature Ising dynamics on square tori",
"bounds": {
"publication_year": {
"min": 1987,
"max": 2013
},
"exact_target_side_length": {
"min": 6,
"max": 6
}
},
"exhaustive": false
}Originating problem: Exact heat-bath spectral gap on the six by six Ising torus
Authored record and scope
- Authored title
- Literature gives the general framework, while the exact 6 by 6 value remains unlocated
- Record type
- attempt
- Stored status
- completed
- Evidence grade
- sourced
- Recorded scope data
- { "kind": "bounded", "statement": "primary and standard references located for heat-bath Glauber dynamics, finite-volume spectral gaps, perturbation comparison, and high-temperature Ising dynamics on square tori", "bounds": { "publication_year": { "min": 1987, "max": 2013 }, "exact_target_side_length": { "min": 6, "max": 6 } }, "exhaustive": false }
Work and source credit
- Recorded action
No action description supplied.
- Authored result summary
The checked sources cover spectral-gap comparison and high-temperature torus dynamics. The audit found no published characteristic polynomial or exact gap for this parameter choice.
- Reported outcome
No separate outcome supplied.
- Recorded status
completed
- Recorded evidence grade
sourced
- Recorded scope
Read complete recorded scope
{ "kind": "bounded", "statement": "primary and standard references located for heat-bath Glauber dynamics, finite-volume spectral gaps, perturbation comparison, and high-temperature Ising dynamics on square tori", "bounds": { "publication_year": { "min": 1987, "max": 2013 }, "exact_target_side_length": { "min": 6, "max": 6 } }, "exhaustive": false }
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2Authored explanation
Holley and Stroock develop functional inequalities and perturbation methods for stochastic Ising models. Martinelli's Saint-Flour lectures give a broad account of reversible Glauber dynamics, finite-volume spectral gaps, and temperature regimes. Lubetzky and Sly study heat-bath Glauber dynamics on square tori throughout the strong-spatial-mixing regime and relate finite-torus gaps to the infinite-volume gap.
These sources support the chain convention and the use of Poincare comparison. They do not tabulate the second eigenvalue for \(C_6\mathbin{\square}C_6\) at \(\beta=(\log2)/2\). Targeted searches for the exact size, the five rational conditional probabilities, and a finite-volume characteristic polynomial also found no such certificate. This is a status audit rather than a proof of novelty.
A full resolution needs a decomposition of the transition operator under spin flip and the automorphism group of the torus, followed by an exact characteristic polynomial or rational eigenvalue enclosures for every block. The present one-dimensional Ritz calculation covers one invariant trial subspace and supplies the upper endpoint recorded here.
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3Outcome
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Verification source: doi.org ↗, Richard Holley and Daniel Stroock, Logarithmic Sobolev Inequalities and Stochastic Ising Models, Journal of Statistical Physics 46 (1987), 1159-1194, DOI 10.1007/BF01011161; Fabio Martinelli, Lectures on Glauber Dynamics for Discrete Spin Models, Lecture Notes in Mathematics 1717 (1999), 93-191, DOI 10.1007/978-3-540-48115-7_2; Eyal Lubetzky and Allan Sly, Cutoff for the Ising Model on the Lattice, Inventiones Mathematicae 191 (2013), 719-755, DOI 10.1007/s00222-012-0404-5
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"title": "Literature gives the general framework, while the exact 6 by 6 value remains unlocated",
"summary": "The checked sources cover spectral-gap comparison and high-temperature torus dynamics. The audit found no published characteristic polynomial or exact gap for this parameter choice.",
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}6Provenance
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