{"atlas":{"title":"The de Sitter / String Swampland Atlas","url":"https://research.mahastrategies.com/atlas/de-sitter-swampland","version":"1.2.0","release":"Atlas Context Pack","lastReviewed":"2026-07-27","license":"https://creativecommons.org/licenses/by/4.0/","sourcePaper":"https://research.mahastrategies.com/papers/de_sitter_swampland_map","doi":"10.5281/zenodo.21603961","conceptDoi":"10.5281/zenodo.21603960","archive":"https://zenodo.org/records/21603961","sourcesEndpoint":"https://research.mahastrategies.com/atlas/de-sitter-swampland/sources.json","note":"Educational, non-peer-reviewed orientation tool. Each claim carries an epistemic status and a limitations statement; both are part of the claim and should travel with it."},"statusVocabulary":[{"id":"established","label":"Established result","definition":"A mathematical construction, derivation, or experimental measurement that the relevant community treats as settled. It says what was shown, not that any larger claim built on it follows."},{"id":"active","label":"Active research","definition":"A genuinely open question under current technical dispute. Competent researchers disagree, the disagreement is technical rather than rhetorical, and no side has closed it."},{"id":"conjecture","label":"Conjecture","definition":"A precisely stated proposal that is motivated by evidence and argument but has not been derived or proved. It may be true; it is not established."},{"id":"speculative","label":"Speculative interpretation","definition":"A scenario built on top of one or more unproved conjectures, often combined with phenomenological input. Interesting and testable in places, but several inferential steps from established ground."}],"count":12,"claims":[{"id":"ds-001","slug":"lambda-modeling","claim":"The observed late-time acceleration of the universe is standardly modeled with a small positive cosmological constant, and current data place the dark-energy equation of state near w = −1.","status":"established","statusLabel":"Established result","statusNote":"observational framework","explanation":"This is the empirical anchor of the debate. Both camps accept it: the landscape side tries to reproduce a small positive vacuum energy from string constructions, and the swampland side has to explain the same observation without a stable de Sitter vacuum.","limitations":"A successful model is not a proof of mechanism. Whether the vacuum energy is truly constant or slowly rolling is not settled by current bounds. Note also that the discovery-era supernova papers are outside the source map’s verified citation set, so they are not cited here; the sources listed are the in-set works that constrain the equation of state.","conceptIds":["cosmological-constant","observational-cosmology","de-sitter"],"sourceIds":["heisenberg2018","schoneberg2023"],"reviewDate":"2026-07-27","atlasVersion":"1.2.0","canonicalUrl":"https://research.mahastrategies.com/atlas/de-sitter-swampland/claims/ds-001"},{"id":"ds-002","slug":"no-consensus","claim":"Whether string/M-theory admits stable or metastable de Sitter vacua remains an open question, and there is no community consensus.","status":"active","statusLabel":"Active research","statusNote":null,"explanation":"The source map is explicit that the disagreement is technical and genuine, turning on the validity of four-dimensional effective actions, the control of higher-dimensional backreaction, and the trustworthiness of asymptotic regimes. Both camps maintain mathematically sophisticated positions.","limitations":"Neither this atlas nor its source paper adjudicates the question. Any presentation of either side as settled misrepresents the state of the field.","conceptIds":["de-sitter","string-theory","m-theory","swampland"],"sourceIds":["kachru2019","danielsson2018","deSitterPaper"],"reviewDate":"2026-07-27","atlasVersion":"1.2.0","canonicalUrl":"https://research.mahastrategies.com/atlas/de-sitter-swampland/claims/ds-002"},{"id":"ds-003","slug":"kklt-proposal","claim":"KKLT is a specific, well-defined proposal for obtaining a de Sitter vacuum: flux and non-perturbative stabilization into a supersymmetric anti-de Sitter minimum, followed by an anti-D3-brane uplift.","status":"established","statusLabel":"Established result","statusNote":null,"explanation":"The construction exists as a definite recipe in the literature and has been the reference point for the field for two decades. Describing what it proposes is uncontroversial.","limitations":"That the construction is well-defined does not establish that it works. Its validity is the subject of the next two claims.","conceptIds":["kklt","anti-de-sitter","flux-compactification","moduli"],"sourceIds":["kklt2003"],"reviewDate":"2026-07-27","atlasVersion":"1.2.0","canonicalUrl":"https://research.mahastrategies.com/atlas/de-sitter-swampland/claims/ds-003"},{"id":"ds-004","slug":"kklt-control","claim":"Whether the KKLT anti-brane uplift is under parametric ten-dimensional supergravity control is actively debated.","status":"active","statusLabel":"Active research","statusNote":null,"explanation":"Defenders argue that supersymmetry breaking is localized on the anti-D3-brane and that an explicit ten-dimensional analysis reproduces the four-dimensional result. Skeptics argue that explicit ten-dimensional treatments show infrared singularities in the anti-brane backreaction, and that the integrated ten-dimensional equations obstruct the uplift.","limitations":"This is a live technical dispute between established groups — not a fringe objection to a settled result, and not a refutation either. The existence of a singularity in a given approximation is not the same as its being physical; defenders argue brane polarization resolves it. Citing only one side misrepresents the literature.","conceptIds":["kklt","moduli","de-sitter"],"sourceIds":["kachru2019","kallosh2019","bena2012","moritz2017","danielsson2018"],"reviewDate":"2026-07-27","atlasVersion":"1.2.0","canonicalUrl":"https://research.mahastrategies.com/atlas/de-sitter-swampland/claims/ds-004"},{"id":"ds-005","slug":"lvs-large-volume","claim":"The Large Volume Scenario stabilizes Kähler moduli at exponentially large volume, which nominally suppresses α′ and loop corrections.","status":"established","statusLabel":"Established result","statusNote":null,"explanation":"The stabilization mechanism and its large-volume scaling are a definite result of the construction, and the suppression of leading corrections at large volume follows from that scaling.","limitations":"Nominal suppression of the leading corrections is not the same as parametric control of all of them. That stronger statement is contested.","conceptIds":["large-volume-scenario","moduli","compactification"],"sourceIds":["lvs2005","cicoli2012","gallego2017"],"reviewDate":"2026-07-27","atlasVersion":"1.2.0","canonicalUrl":"https://research.mahastrategies.com/atlas/de-sitter-swampland/claims/ds-005"},{"id":"ds-006","slug":"lvs-tadpole","claim":"It has been argued that keeping LVS de Sitter constructions under control requires a negative D3-tadpole exceeding known Calabi-Yau bounds.","status":"active","statusLabel":"Active research","statusNote":null,"explanation":"This is the sharpest quantitative form of the LVS control objection: rather than disputing the scheme in principle, it derives a numerical requirement and compares it with what the known geometries supply.","limitations":"A parametric constraint against currently known Calabi-Yau bounds is not a no-go theorem. The bound is on what has been catalogued, and the argument is contested by LVS proponents.","conceptIds":["large-volume-scenario","compactification","moduli"],"sourceIds":["gao2022","junghans2022"],"reviewDate":"2026-07-27","atlasVersion":"1.2.0","canonicalUrl":"https://research.mahastrategies.com/atlas/de-sitter-swampland/claims/ds-006"},{"id":"ds-007","slug":"ds-conjecture","claim":"The de Sitter swampland conjecture proposes that scalar potentials in consistent quantum-gravity effective theories obey a gradient bound |∇V| ≥ c·V, with c of order one.","status":"conjecture","statusLabel":"Conjecture","statusNote":null,"explanation":"Stating the conjecture is a statement about the literature, not about nature. Its advocates motivate it from the distance conjecture and de Sitter thermodynamics, and it would forbid stable de Sitter minima if correct.","limitations":"The conjecture has no derivation from a ten-dimensional construction and no proof. It is a proposal under active test, and a refined form was introduced precisely because the original was in tension with known physics.","conceptIds":["ds-conjecture","swampland","de-sitter"],"sourceIds":["obied2018","garg2018"],"reviewDate":"2026-07-27","atlasVersion":"1.2.0","canonicalUrl":"https://research.mahastrategies.com/atlas/de-sitter-swampland/claims/ds-007"},{"id":"ds-008","slug":"c-tension","claim":"An order-one value of c has been argued to be in tension with slow-roll inflation and with the observed value of the cosmological constant.","status":"active","statusLabel":"Active research","statusNote":null,"explanation":"This is the main cosmological objection from the landscape side: the same order-one constant that makes the conjecture powerful also makes it hard to reconcile with inflationary phenomenology and with the observed dark-energy sector.","limitations":"The tension depends on which version of the conjecture is used and on assumptions about the inflationary sector. It is an argument in a live dispute, not a refutation.","conceptIds":["ds-conjecture","cosmological-constant","observational-cosmology"],"sourceIds":["akrami2018"],"reviewDate":"2026-07-27","atlasVersion":"1.2.0","canonicalUrl":"https://research.mahastrategies.com/atlas/de-sitter-swampland/claims/ds-008"},{"id":"ds-009","slug":"tcc","claim":"The Trans-Planckian Censorship Conjecture proposes that sub-Planckian fluctuations never cross the Hubble horizon and freeze, which bounds the lifetime of a de Sitter phase.","status":"conjecture","statusLabel":"Conjecture","statusNote":null,"explanation":"TCC gives an independent route to swampland-like constraints, replacing \"no de Sitter\" with \"no long-lived de Sitter\". It has become central to the post-2019 debate and is treated as its own thread in the source map.","limitations":"TCC is a conjecture. Skeptics note that the resulting bound forces a low inflation scale, which makes the observed amplitude of primordial perturbations hard to generate without fine-tuning.","conceptIds":["de-sitter","swampland","ds-conjecture"],"sourceIds":["bedroya2019"],"reviewDate":"2026-07-27","atlasVersion":"1.2.0","canonicalUrl":"https://research.mahastrategies.com/atlas/de-sitter-swampland/claims/ds-009"},{"id":"ds-010","slug":"quintessence","claim":"If metastable de Sitter vacua are excluded, dark energy would have to be dynamical — a rolling scalar field rather than a constant.","status":"active","statusLabel":"Active research","statusNote":null,"explanation":"Quintessence is the standard fallback if the swampland position is correct, and it is where the conjectures make contact with data that can actually be measured.","limitations":"This is a conditional claim, not a claim that dark energy is dynamical. Bounds near w = −1 constrain rolling models; one 2023 reanalysis in the source set finds newer data allows slightly more freedom in the criteria rather than tightening the tension, while raising a separate fine-tuning problem from constraints on moduli-electromagnetic couplings.","conceptIds":["cosmological-constant","observational-cosmology","de-sitter","swampland"],"sourceIds":["agrawal2018","heisenberg2018","schoneberg2023"],"reviewDate":"2026-07-27","atlasVersion":"1.2.0","canonicalUrl":"https://research.mahastrategies.com/atlas/de-sitter-swampland/claims/ds-010"},{"id":"ds-011","slug":"dark-dimension","claim":"The Dark Dimension scenario ties the dark-energy scale to a Kaluza-Klein scale via the AdS distance conjecture, predicting a single extra dimension of roughly micron size.","status":"speculative","statusLabel":"Speculative interpretation","statusNote":null,"explanation":"It is one of the few places in this debate that yields a concrete, near-term testable number, which is why it attracts attention out of proportion to its epistemic footing.","limitations":"The scenario is built on the AdS distance conjecture — itself unproved — combined with phenomenological input. A testable prediction is not evidence for the premises that generated it.","conceptIds":["extra-dimensions","cosmological-constant","swampland"],"sourceIds":["montero2022","lust2019","blumenhagen2022","lawSmith2023"],"reviewDate":"2026-07-27","atlasVersion":"1.2.0","canonicalUrl":"https://research.mahastrategies.com/atlas/de-sitter-swampland/claims/ds-011"},{"id":"ds-012","slug":"eotwash","claim":"Torsion-balance experiments report no deviation from the gravitational inverse-square law down to separations of about 52 micrometres.","status":"established","statusLabel":"Established result","statusNote":"experimental measurement","explanation":"This is a direct laboratory measurement, published in Physical Review Letters, and one of the few genuinely settled empirical inputs on this map. It constrains any scenario predicting a mesoscopic extra dimension.","limitations":"A null result bounds the parameter space; it does not exclude the Dark Dimension scenario, whose predicted scale sits near the current experimental frontier. Systematics modeling, not the raw sensitivity, is the practical limit.","conceptIds":["extra-dimensions","observational-cosmology"],"sourceIds":["lee2020","kapner2007"],"reviewDate":"2026-07-27","atlasVersion":"1.2.0","canonicalUrl":"https://research.mahastrategies.com/atlas/de-sitter-swampland/claims/ds-012"}]}