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          "country": "Canada", 
          "value": "Department of Physics, McGill University, 3600 Rue University, Montr\u00e9al, QC, H3A 2T8, Canada", 
          "organization": "McGill University"
        }, 
        {
          "country": "USA", 
          "value": "Institute for Advanced Study, Einstein Drive, Princeton, NJ, 08540, USA", 
          "organization": "Institute for Advanced Study"
        }
      ], 
      "surname": "Caron-Huot", 
      "email": "schuot@physics.mcgill.ca", 
      "full_name": "Caron-Huot, Simon", 
      "given_names": "Simon"
    }, 
    {
      "affiliations": [
        {
          "country": "Canada", 
          "value": "Department of Physics, McGill University, 3600 Rue University, Montr\u00e9al, QC, H3A 2T8, Canada", 
          "organization": "McGill University"
        }
      ], 
      "surname": "Giroux", 
      "email": "mathieu.giroux2@mail.mcgill.ca", 
      "full_name": "Giroux, Mathieu", 
      "given_names": "Mathieu"
    }, 
    {
      "affiliations": [
        {
          "country": "USA", 
          "value": "Institute for Advanced Study, Einstein Drive, Princeton, NJ, 08540, USA", 
          "organization": "Institute for Advanced Study"
        }
      ], 
      "surname": "Hannesdottir", 
      "email": "hofie@ias.edu", 
      "full_name": "Hannesdottir, Holmfridur", 
      "given_names": "Holmfridur"
    }, 
    {
      "affiliations": [
        {
          "country": "USA", 
          "value": "Institute for Advanced Study, Einstein Drive, Princeton, NJ, 08540, USA", 
          "organization": "Institute for Advanced Study"
        }
      ], 
      "surname": "Mizera", 
      "email": "smizera@ias.edu", 
      "full_name": "Mizera, Sebastian", 
      "given_names": "Sebastian"
    }
  ], 
  "titles": [
    {
      "source": "Springer", 
      "title": "What can be measured asymptotically?"
    }
  ], 
  "dois": [
    {
      "value": "10.1007/JHEP01(2024)139"
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      "journal_title": "Journal of High Energy Physics", 
      "material": "article", 
      "journal_volume": "2024", 
      "artid": "JHEP01(2024)139", 
      "year": 2024, 
      "page_start": "1", 
      "journal_issue": "1"
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    "submission_number": "f33e3f60029a11ef81c58e7301cc4a06"
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  "page_nr": [
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      "url": "https://creativecommons.org/licenses//by/4.0", 
      "license": "CC-BY-4.0"
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  "copyright": [
    {
      "holder": "The Author(s)", 
      "year": "2024"
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  "control_number": "82977", 
  "record_creation_date": "2024-01-25T03:30:13.335640", 
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  "abstracts": [
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      "source": "Springer", 
      "value": "We consider asymptotic observables in quantum field theories in which the S-matrix makes sense. We argue that in addition to scattering amplitudes, a whole compendium of inclusive observables exists where the time-ordering is relaxed. These include expectation values of electromagnetic or gravitational radiation fields as well as out-of-time-order amplitudes. We explain how to calculate them in two ways: by relating them to amplitudes and products of amplitudes, and by using a generalization of the LSZ reduction formula. As an application, we discuss one-loop master integrals contributing to gravitational radiation in the post-Minkowski expansion, emphasizing the role of classical cut contributions and highlighting the different infrared physics of in-in observables."
    }
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