{"paper":{"title":"Null String Holography, Null Strings Probe Projective Boundary of Their Target Spaces","arxiv_id":"2609.10432","primary_cat":"hep-th","submitted_at":"2026-09-09T16:44:32+00:00","version_compiled":"v1"},"notice":"Every quoted sentence is the authors' text from the arXiv listing abstract. Labels and probabilities are the outputs of classifier-1.13.0 on the question bank abstract-p1-20260923, exactly as returned. No sentence in this record was written by a language model.","schema":"pith.compiled-record/v0","status":"compiled","abstract":{"source":"arXiv listing abstract v1","sentences":[{"i":0,"p":0.93,"id":"s0","own":true,"role":"result","text":"We prove that the \\textit{minimal null string theory} on background manifold ${\\cal M}$ is classically equivalent to the ILST theory on the projective boundary of $\\mathcal M$, ${\\mathcal B}_{_{\\text{P}}}={\\partial_{_{\\text{P}}}\\mathcal{M}}$.","hedge":{"p":1.0,"label":"asserted"},"own_p":0.93,"main_claim_p":0.84,"quantitative":false,"quantitative_p":0.17,"role_probabilities":{"gap":0.0,"method":0.0,"result":0.93,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":0.07,"interpretation":0.0}},{"i":1,"p":0.45,"id":"s1","own":false,"role":"future_work","text":"We conjecture that this equivalence also holds as quantum level, which we dub \\textit{null string holography}.","hedge":{"p":1.0,"label":"speculative"},"own_p":0.49,"main_claim_p":0.26,"quantitative":false,"quantitative_p":0.05,"role_probabilities":{"gap":0.0,"method":0.0,"result":0.05,"background":0.0,"limitation":0.01,"future_work":0.45,"contribution":0.25,"interpretation":0.24}},{"i":2,"p":0.97,"id":"s2","own":true,"role":"result","text":"In particular, we show classical null string theory on Poincar\\'e patch of $D$ dimensional Anti de Sitter (AdS$_D$) background is described by ILST on $D-1$ dimensional Minkowski background, paralleling the celebrated AdS/CFT.","hedge":{"p":1.0,"label":"asserted"},"own_p":0.93,"main_claim_p":0.21,"quantitative":true,"quantitative_p":0.81,"role_probabilities":{"gap":0.0,"method":0.0,"result":0.97,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":0.02,"interpretation":0.01}},{"i":3,"p":0.99,"id":"s3","own":true,"role":"result","text":"Null strings on cosmological patch of dS$_D$ is governed by ILST on $D-1$ dimensional flat Euclidean space.","hedge":{"p":1.0,"label":"asserted"},"own_p":0.83,"main_claim_p":0.07,"quantitative":true,"quantitative_p":0.72,"role_probabilities":{"gap":0.0,"method":0.0,"result":0.99,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":0.01,"interpretation":0.0}},{"i":4,"p":0.98,"id":"s4","own":true,"role":"result","text":"For null strings on $D$ dimensional Minkowski space, depending on the coordinate patch used, the projective boundary where the ``dual'' ILST theory resides, can by dS$_{D-1}$, $D-1$ dimensional Carrollian space and $D-1$ dimensional hyperboloid, respectively including spacelike asymptotic boundary $\\iota^0$, asymptotic null boundaries ${\\cal I}^\\pm$ and timelike infinities $\\iota^\\pm$.","hedge":{"p":0.93,"label":"asserted"},"own_p":0.84,"main_claim_p":0.1,"quantitative":true,"quantitative_p":0.59,"role_probabilities":{"gap":0.0,"method":0.0,"result":0.98,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":0.02,"interpretation":0.0}},{"i":5,"p":0.96,"id":"s5","own":true,"role":"interpretation","text":"We comment on physical implications of the null string holography on black hole backgrounds whose projective boundary includes horizons.","hedge":{"p":0.88,"label":"unclear"},"own_p":0.6,"main_claim_p":0.04,"quantitative":false,"quantitative_p":0.04,"role_probabilities":{"gap":0.0,"method":0.0,"result":0.0,"background":0.0,"limitation":0.0,"future_work":0.03,"contribution":0.01,"interpretation":0.96}}]},"compiled":{"main_claim":{"p":0.95,"text":"We prove that the \\textit{minimal null string theory} on background manifold ${\\cal M}$ is classically equivalent to the ILST theory on the projective boundary of $\\mathcal M$, ${\\mathcal 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