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In the case of quintessence models, we find that over most of the $w_0$, $w_a$ parameter space the CPL parametrization maps onto a fairly narrow form of behavior for the potential $V(\\phi)$, while a one-dimensional subset of paramete"},"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":"1505.05781","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-05-21T16:14:12Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"f2b31621d73d628d5995f7a1fa3e8e7136d3c1820cc3cbf110ac5fb2716d8867","abstract_canon_sha256":"c200022b0617750d9fe11a84883e18c6fbe569aa31dde8afa2ef97f31355133d"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:35:30.038588Z","signature_b64":"hEOkpws+0TfllAcFWg1QDqCbqPtk8R09ENxe7Osv3ja65YR2YF29aL9KuQDagykddtgP7DxdfsRLs1H2/muvCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"15acdfb6c2a0af20869dd728d67bef93008e99e8cd06f43f19a08ebd67f09ff5","last_reissued_at":"2026-05-18T01:35:30.038127Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:35:30.038127Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Mapping the Chevallier-Polarski-Linder parametrization onto Physical Dark Energy Models","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"astro-ph.CO","authors_text":"Robert J. 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