{"work":{"id":"467ee6e7-f1d1-4a61-89dc-a39f714caca6","openalex_id":null,"doi":null,"arxiv_id":"1108.5385","raw_key":null,"title":"Constructing Amplitudes from Their Soft Limits","authors":null,"authors_text":"C","year":2011,"venue":"hep-th","abstract":"The existence of universal soft limits for gauge-theory and gravity amplitudes has been known for a long time. The properties of the soft limits have been exploited in numerous ways; in particular for relating an n-point amplitude to an (n-1)-point amplitude by removing a soft particle. Recently, a procedure called inverse soft was developed by which \"soft\" particles can be systematically added to an amplitude to construct a higher-point amplitude for generic kinematics. We review this procedure and relate it to Britto-Cachazo-Feng-Witten recursion. We show that all tree-level amplitudes in gauge theory and gravity up through seven points can be constructed in this way, as well as certain classes of NMHV gauge-theory amplitudes with any number of external legs. This provides us with a systematic procedure for constructing amplitudes solely from their soft limits.","external_url":"https://arxiv.org/abs/1108.5385","cited_by_count":null,"metadata_source":"pith","metadata_fetched_at":"2026-05-24T10:19:18.772347+00:00","pith_arxiv_id":"1108.5385","created_at":"2026-05-11T00:15:53.425357+00:00","updated_at":"2026-06-05T21:23:00.469572+00:00","title_quality_ok":true,"display_title":"Constructing Amplitudes from Their Soft Limits","render_title":"Constructing Amplitudes from Their Soft Limits"},"hub":{"state":{"work_id":"467ee6e7-f1d1-4a61-89dc-a39f714caca6","tier":"hub","tier_reason":"10+ Pith inbound or 1,000+ external citations","pith_inbound_count":12,"external_cited_by_count":null,"distinct_field_count":1,"first_pith_cited_at":"2022-12-25T11:21:33+00:00","last_pith_cited_at":"2026-04-08T15:19:12+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":"2026-07-02T01:52:12.691013+00:00","tier_text":"hub"},"tier":"hub","role_counts":[{"context_role":"background","n":1}],"polarity_counts":[{"context_polarity":"background","n":1}],"runs":{},"summary":{},"graph":{},"authors":[]}}