{"schema":"pubphys.bundle/1","record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.revision/1","content_sha256":"924a6078c26866e1d796e75179a5bf92b4627d4a0bb428dede7ed33e359f59ff","created":"2026-10-03T07:17:54Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":["5475cf5dc5b1a72283d26dc95dc6e00d7ea4e00096a7c6492e409a1816eeb011"],"salt":"c14e5d05fd8cd663db0bd78faf9cc7af21fd0d3128499e406ede71889b44770c","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"revision"},"content":{"answer_type":"mechanism","assisted_by":[],"external_id":"amo.open-system-atoms.many-body-skin-effect","kind":"well-posed","literature_status":"partially-resolved","n":"1","parents":[],"plain":"With one-way loss built into a lattice, all waves pile up at one edge, an effect called the skin effect. Whether this survives when real quantum jumps and atom-atom interactions are included is open.","posed_since":"","precise":"Atoms in a $1\\mathrm{D}$ or $2\\mathrm{D}$ lattice with engineered nonreciprocal dissipative hopping, evolving under a Lindblad master equation. The effective non-Hermitian Hamiltonian $H_{\\mathrm{eff}}$ predicts boundary localization of all modes. Determine whether the full Lindblad dynamics of interacting bosons or fermions shows boundary accumulation with the $H_{\\mathrm{eff}}$ length scale, and how quantum jumps and Pauli blocking modify it. Answer: mechanism and measured localization length.","problem_ref":null,"references":"","settled_by":"An experiment with interacting atoms resolving density profiles under nonreciprocal dissipation, compared with full Lindblad simulation.","status_note":"A single-particle skin effect was observed in an atomic momentum-space lattice in 2022 (Liang et al., PRL), and a 2D skin effect in a weakly interacting ultracold Fermi gas was reported in 2025 (Zhao et al., Nature, doi:10.1038/s41586-024-08347-3); interaction and quantum-jump effects remain unmeasured.","title":"The non-Hermitian skin effect with quantum jumps and 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