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Spohn: In the diffusive limit where time is rescaled by L^2 and L tends to infinity, the boundary of the droplet of \"-\" spins follows a deterministic anisotropic curve-shortening flow, such that the normal velocity is given by the local curvature t"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1306.4507","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math-ph","submitted_at":"2013-06-19T12:01:14Z","cross_cats_sorted":["math.AP","math.MP","math.PR"],"title_canon_sha256":"7f2913b8ea032362fbd78b85ede99b49c6a183dbb3f8ac04f35956cd1f4ebcb2","abstract_canon_sha256":"867c57bcc7c10d388d929cfe2d2fcca633d08c48079ab49e48233bfea7049eaa"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:20:34.225357Z","signature_b64":"GO785YaW4Cqvh/k6IiepTk3IyzHPiqc4irxoIeFzCrW2+RXB7RY/hIncH9cRQSKMflwNstcjwbBbTr5KrmKFDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d7d27cebfbc5b67ddfd78de8e2f66047f2929f5e47d026fa20034b930038c911","last_reissued_at":"2026-05-18T03:20:34.224508Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:20:34.224508Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The heat equation shrinks Ising droplets to points","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.AP","math.MP","math.PR"],"primary_cat":"math-ph","authors_text":"F.L. 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