{"paper":{"title":"Carrollian Physics and Holography","arxiv_id":"2602.02644","primary_cat":"hep-th","submitted_at":"2026-02-02T19:00:00+00:00","version_compiled":"v2"},"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 v2","sentences":[{"i":0,"p":0.64,"id":"s0","own":false,"role":"contribution","text":"This report reviews key developments in Carrollian physics with an emphasis on their role in the emerging framework of holography in asymptotically flat spacetimes.","hedge":{"p":0.75,"label":"asserted"},"own_p":0.18,"main_claim_p":0.06,"quantitative":false,"quantitative_p":0.03,"role_probabilities":{"gap":0.0,"method":0.0,"result":0.0,"background":0.36,"limitation":0.0,"future_work":0.0,"contribution":0.64,"interpretation":0.0}},{"i":1,"p":0.67,"id":"s1","own":false,"role":"background","text":"We begin by introducing the Carrollian limit, understood as a contraction of the Poincar\\'e group obtained by formally taking the speed of light to zero.","hedge":{"p":0.99,"label":"asserted"},"own_p":0.18,"main_claim_p":0.02,"quantitative":false,"quantitative_p":0.36,"role_probabilities":{"gap":0.0,"method":0.2,"result":0.0,"background":0.67,"limitation":0.0,"future_work":0.0,"contribution":0.13,"interpretation":0.0}},{"i":2,"p":0.48,"id":"s2","own":false,"role":"background","text":"The geometric structures associated with this limit are described and argued to arise naturally on null hypersurfaces, most notably on null infinity, as well as black hole and cosmological horizons.","hedge":{"p":0.79,"label":"asserted"},"own_p":0.29,"main_claim_p":0.03,"quantitative":false,"quantitative_p":0.05,"role_probabilities":{"gap":0.0,"method":0.07,"result":0.04,"background":0.48,"limitation":0.0,"future_work":0.0,"contribution":0.33,"interpretation":0.08}},{"i":3,"p":0.77,"id":"s3","own":false,"role":"contribution","text":"Building on this, we examine the relation between the Bondi-Metzner-Sachs symmetries governing asymptotically flat gravity and the conformal Carrollian symmetries.","hedge":{"p":0.79,"label":"asserted"},"own_p":0.33,"main_claim_p":0.03,"quantitative":false,"quantitative_p":0.12,"role_probabilities":{"gap":0.0,"method":0.06,"result":0.01,"background":0.16,"limitation":0.0,"future_work":0.0,"contribution":0.77,"interpretation":0.0}},{"i":4,"p":0.77,"id":"s4","own":true,"role":"contribution","text":"Explicit examples of Carrollian field theories are constructed by implementing the limit on well-known relativistic field theories, with particular attention to Carrollian CFTs.","hedge":{"p":0.99,"label":"asserted"},"own_p":0.81,"main_claim_p":0.03,"quantitative":false,"quantitative_p":0.04,"role_probabilities":{"gap":0.0,"method":0.23,"result":0.0,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":0.77,"interpretation":0.0}},{"i":5,"p":0.91,"id":"s5","own":false,"role":"contribution","text":"We then present the Carrollian holography proposal, according to which gravity in asymptotically flat spacetimes is dual to a Carrollian CFT living at null infinity in one lower dimension.","hedge":{"p":0.93,"label":"asserted"},"own_p":0.23,"main_claim_p":0.36,"quantitative":false,"quantitative_p":0.26,"role_probabilities":{"gap":0.0,"method":0.02,"result":0.01,"background":0.04,"limitation":0.0,"future_work":0.0,"contribution":0.91,"interpretation":0.02}},{"i":6,"p":0.65,"id":"s6","own":false,"role":"interpretation","text":"In this framework, the massless $\\mathcal{S}$-matrix written in position space at null infinity is naturally reinterpreted in terms of boundary Carrollian CFT correlators, called Carrollian amplitudes.","hedge":{"p":1.0,"label":"asserted"},"own_p":0.38,"main_claim_p":0.1,"quantitative":false,"quantitative_p":0.09,"role_probabilities":{"gap":0.0,"method":0.01,"result":0.04,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":0.3,"interpretation":0.65}},{"i":7,"p":0.44,"id":"s7","own":true,"role":"contribution","text":"We highlight their relation to celestial amplitudes and show how they naturally emerge from holographic CFT correlators through a correspondence between the flat space limit in the bulk and the Carrollian limit at the boundary.","hedge":{"p":1.0,"label":"asserted"},"own_p":0.75,"main_claim_p":0.12,"quantitative":false,"quantitative_p":0.26,"role_probabilities":{"gap":0.0,"method":0.02,"result":0.29,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":0.44,"interpretation":0.25}},{"i":8,"p":0.54,"id":"s8","own":true,"role":"result","text":"Using this correspondence, we provide strong evidence that flat space holography arises from a controlled and consistent limiting procedure applied to both sides of the AdS/CFT duality.","hedge":{"p":0.94,"label":"asserted"},"own_p":0.82,"main_claim_p":0.66,"quantitative":false,"quantitative_p":0.07,"role_probabilities":{"gap":0.0,"method":0.0,"result":0.54,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":0.06,"interpretation":0.4}},{"i":9,"p":1.0,"id":"s9","own":false,"role":"future_work","text":"We conclude by outlining future directions and open questions in the program.","hedge":{"p":0.96,"label":"unclear"},"own_p":0.3,"main_claim_p":0.04,"quantitative":false,"quantitative_p":0.02,"role_probabilities":{"gap":0.0,"method":0.0,"result":0.0,"background":0.0,"limitation":0.0,"future_work":1.0,"contribution":0.0,"interpretation":0.0}}]},"compiled":{"main_claim":{"p":0.99,"text":"Using this correspondence, we provide strong evidence that flat space holography arises from a controlled and consistent limiting procedure applied to both sides of the AdS/CFT duality.","location":"abstract 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