{
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    "api_type": "NWO Projects API",
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    "documentation": "https://doi.org/10.5281/zenodo.14918287",
    "release_date": "2025-08-20T00:00:00",
    "funder": "https://doi.org/10.13039/501100003246",
    "ror_id": "https://ror.org/04jsz6e67",
    "date": "2026-11-05T00:00:00",
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  "projects": [
    {
      "project_id": "VI.Veni.202.207",
      "title": "Quantum gravity signatures in the early universe",
      "funding_scheme_id": 4046,
      "funding_scheme": "NWO-Talentprogramma Veni ENW 2020",
      "department": "Exacte en Natuurwetenschappen",
      "sub_department": "Exacte en Natuurwetenschappen",
      "start_date": "2021-10-01T00:00:00",
      "end_date": "2021-12-20T00:00:00",
      "reporting_year": 2020,
      "summary_nl": "General Relativity provides a remarkably successful description of gravity in terms of the geometric properties of spacetime. Nevertheless, this classical description is known to break down at the Planck scale where fluctuations of spacetime become important and the dynamics of gravitational phenomena is governed by quantum physics. The quantum nature of spacetime may have profound implications in astrophysics and cosmology. Specifically, inflationary cosmology and binary systems mergers constitute ideal arenas to test quantum gravity. Potential signatures of quantum gravity could be found, e.g., in the distribution of the temperature fluctuations in the cosmic microwave background radiation or in the spectrum of gravitational waves produced by the merger of two black holes. Finding these signatures is currently challenging, as large-scale modifications induced by quantum gravity are expected to be tiny: detecting them would require a “Planck-scale magnifying glass”. The research goal of my proposal is to find signatures of quantum gravity using a mathematical version of this magnifying glass: the Wilsonian Renormalization Group. The idea is to study the short-distance behavior of spacetime in high energy phenomena and then use the Renormalization Group to “zoom out” and extract the corresponding large-distance Physics. The theoretical predictions can thus be compared with the experimental and observational data on gravitational waves (LIGO&VIRGO data) and on the cosmic microwave background radiation (Planck data). This mechanism provides an extraordinary and unprecedented chance to derive indirect tests of quantum gravity and understand the (quantum) origin of our Universe.",
      "summary_en": "General Relativity provides a remarkably successful description of gravity in terms of the geometric properties of spacetime. Nevertheless, this classical description is known to break down at the Planck scale where fluctuations of spacetime become important and the dynamics of gravitational phenomena is governed by quantum physics. The quantum nature of spacetime may have profound implications in astrophysics and cosmology. Specifically, inflationary cosmology and binary systems mergers constitute ideal arenas to test quantum gravity. Potential signatures of quantum gravity could be found, e.g., in the distribution of the temperature fluctuations in the cosmic microwave background radiation or in the spectrum of gravitational waves produced by the merger of two black holes. Finding these signatures is currently challenging, as large-scale modifications induced by quantum gravity are expected to be tiny: detecting them would require a “Planck-scale magnifying glass”. The research goal of my proposal is to find signatures of quantum gravity using a mathematical version of this magnifying glass: the Wilsonian Renormalization Group. The idea is to study the short-distance behavior of spacetime in high energy phenomena and then use the Renormalization Group to “zoom out” and extract the corresponding large-distance Physics. The theoretical predictions can thus be compared with the experimental and observational data on gravitational waves (LIGO&VIRGO data) and on the cosmic microwave background radiation (Planck data). This mechanism provides an extraordinary and unprecedented chance to derive indirect tests of quantum gravity and understand the (quantum) origin of our Universe.",
      "award_amount": 250000,
      "grant_id": "https://doi.org/10.61686/XBMXD59596",
      "project_members": [
        {
          "role": "Main Applicant",
          "member_id": 438279,
          "last_name": "Platania",
          "degree_pre_nominal": "dr.",
          "initials": "A.B.",
          "first_name": "Alessia",
          "organisation": "Radboud Universiteit Nijmegen",
          "organisation_id": 14509,
          "ror": "https://ror.org/016xsfp80",
          "active": true
        },
        {
          "role": "Project leader",
          "member_id": 438279,
          "last_name": "Platania",
          "degree_pre_nominal": "dr.",
          "initials": "A.B.",
          "first_name": "Alessia",
          "organisation": "Radboud Universiteit Nijmegen",
          "organisation_id": 14509,
          "ror": "https://ror.org/016xsfp80",
          "active": true
        }
      ]
    }
  ]
}