{"work":{"id":"929fe41d-badd-41b1-b73e-48763506a2e7","openalex_id":null,"doi":null,"arxiv_id":"hep-th/0202021","raw_key":null,"title":"Strings in flat space and pp waves from ${\\cal N}=4$ Super Yang Mills","authors":null,"authors_text":"Berenstein D E, Maldacena J M and Nastase H S 2002JHEP 04 013 [arXiv:hep-th/0202021]","year":2002,"venue":"hep-th","abstract":"We explain how the string spectrum in flat space and pp-waves arises from the large $N$ limit, at fixed $g^2_{YM}$, of U(N) ${\\cal N} =4$ super Yang Mills. We reproduce the spectrum by summing a subset of the planar Feynman diagrams. We give a heuristic argument for why we can neglect other diagrams. We also discuss some other aspects of pp-waves and we present a matrix model associated to the DLCQ description of the maximally supersymmetric eleven dimensional pp-waves.","external_url":"https://arxiv.org/abs/hep-th/0202021","cited_by_count":null,"metadata_source":"pith","metadata_fetched_at":"2026-05-25T07:25:28.946059+00:00","pith_arxiv_id":"hep-th/0202021","created_at":"2026-05-09T07:21:28.443337+00:00","updated_at":"2026-06-05T21:23:00.469572+00:00","title_quality_ok":true,"display_title":"Strings in flat space and pp waves from ${\\cal N}=4$ Super Yang Mills","render_title":"Strings in flat space and pp waves from ${\\cal N}=4$ Super Yang Mills"},"hub":{"state":{"work_id":"929fe41d-badd-41b1-b73e-48763506a2e7","tier":"hub","tier_reason":"10+ Pith inbound or 1,000+ external citations","pith_inbound_count":17,"external_cited_by_count":null,"distinct_field_count":2,"first_pith_cited_at":"2025-05-29T18:00:01+00:00","last_pith_cited_at":"2026-05-15T18:03:06+00:00","author_build_status":"not_needed","summary_status":"needed","contexts_status":"needed","graph_status":"needed","ask_index_status":"not_needed","reader_status":"not_needed","recognition_status":"not_needed","updated_at":"2026-06-11T20:18:56.355628+00:00","tier_text":"hub"},"tier":"hub","role_counts":[{"context_role":"background","n":10}],"polarity_counts":[{"context_polarity":"background","n":10}],"runs":{},"summary":{},"graph":{},"authors":[]}}