AWhat changed
Two independent 2008 teams used cold atoms to observe spatial localization of matter waves under controlled conditions. Billy and colleagues released a dilute cloud into a one-dimensional laser-speckle potential and measured stationary exponential density wings. Roati and colleagues used an almost non-interacting potassium condensate in a quasiperiodic optical lattice, testing transport and spatial and momentum profiles. Their different experimental routes probe disorder-related localization; they are one result family here, with two separate source bylines.
Scientific scope
Two independent 2008 teams used cold atoms to observe spatial localization of matter waves under controlled conditions. Billy and colleagues released a dilute cloud into a one-dimensional laser-speckle potential and measured stationary exponential density wings. Roati and colleagues used an almost non-interacting potassium condensate in a quasiperiodic optical lattice, testing transport and spatial and momentum profiles. Their different experimental routes probe disorder-related localization; they are one result family here, with two separate source bylines. One contribution family with distinct experimental systems, not a joint paper. Billy's negligible-interaction inference concerns dilute wings and weak disorder; its cut-off-dependent effective mobility edge is not a general three-dimensional Anderson transition. Roati realizes an Aubry–André-type quasi-periodic crossover: actual beta=1.1972 broadens/shifts the ideal golden-ratio Delta/J=2 transition. Not proof of interacting many-body localization or localization for every disorder strength.
Evidence
The linked original works support the scoped statement and contribution attribution. WRS has not independently replayed experiments or reconstructed a full mathematical proof. One contribution family with distinct experimental systems, not a joint paper. Billy's negligible-interaction inference concerns dilute wings and weak disorder; its cut-off-dependent effective mobility edge is not a general three-dimensional Anderson transition. Roati realizes an Aubry–André-type quasi-periodic crossover: actual beta=1.1972 broadens/shifts the ideal golden-ratio Delta/J=2 transition. Not proof of interacting many-body localization or localization for every disorder strength.
Contributors
- The named authors in the research record · SCIENCE: Source-listed authors for the exact contribution; experimental subjects are not autonomous scientific authors. Source support and predecessor work retain separate roles. Individual effort shares and unresolved identities are not inferred.
- Direct observation of Anderson localization of matter-waves in a controlled disorder, arXiv0804.1621v2
- Anderson localization of a non-interacting Bose-Einstein condensate, arXiv0804.2609v1
Provisional WRS assessment, edition 2026-10-23.4. Independent expert calibration is pending. This grade does not certify correctness or assign ownership.
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