{ "meta": { "api_type": "NWO Projects API", "version": "1.0.2", "licence": { "name": "CC0 1.0 Universal", "url": "https://creativecommons.org/publicdomain/zero/1.0", "description": "To the extent possible under law, all copyright and related or neighbouring rights have been waived worldwide to the data made available through this API." }, "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", "count": 1, "per_page": 100, "pages": 1, "page": 1 }, "projects": [ { "project_id": "VI.Veni.192.109", "title": "The mosaic tiles of quantum gravity", "funding_scheme_id": 3580, "funding_scheme": "NWO-Talentprogramma Veni ENW 2019", "department": "Exacte en Natuurwetenschappen", "sub_department": "Exacte en Natuurwetenschappen", "start_date": "2020-12-01T00:00:00", "end_date": "2023-12-01T00:00:00", "reporting_year": 2019, "summary_nl": "Understanding the quantum structure of spacetime is one of the most challenging open problems in physics. It requires the combination of the two central paradigms of modern physics: general relativity and quantum theory, giving rise to a theory of quantum gravity answering age-old questions about the origin of the universe and the nature of black holes singularities. So far, the construction of such a theory using the successful techniques applied to the other fundamental interactions led to inconsistencies and new perspectives are required. A peculiar aspect is that the entity to be quantized is the geometry of spacetime. Following Feynman’s quantization prescription, one has to “sum over geometries”. The route I take in this project is to discretize geometry and sum over all possible discrete “surfaces”. The resulting physical theory is obtained by taking the continuum limit, i.e., by taking the discretization scale to zero while increasing the number of building blocks. One searches for a suitable dynamics which drives these “spacetime tiles” to form a large-structure which resembles our universe. I will investigate if and how a well defined continuum limit can be taken in different approaches to quantum gravity. The main tool I will employ is the renormalization group which allows one to probe physics at different length scales, very much like a “microscope”. Recently, I developed renormalization group techniques suitable for coarse-graining theories of quantum geometry. This constitutes an extremely versatile toolbox which will allow me to explore synergies between different discrete approaches to quantum gravity and extract universal properties a consistent theory of quantum gravity should feature. This paves the way for my quest of finding suitable continuum limits for quantum gravity and establish qualitative as well as quantitative comparison between physical quantities computed within diverse approaches heading towards a complete picture of quantum spacetime.", "summary_en": "Understanding the quantum structure of spacetime is one of the most challenging open problems in physics. It requires the combination of the two central paradigms of modern physics: general relativity and quantum theory, giving rise to a theory of quantum gravity answering age-old questions about the origin of the universe and the nature of black holes singularities. So far, the construction of such a theory using the successful techniques applied to the other fundamental interactions led to inconsistencies and new perspectives are required. A peculiar aspect is that the entity to be quantized is the geometry of spacetime. Following Feynman’s quantization prescription, one has to “sum over geometries”. The route I take in this project is to discretize geometry and sum over all possible discrete “surfaces”. The resulting physical theory is obtained by taking the continuum limit, i.e., by taking the discretization scale to zero while increasing the number of building blocks. One searches for a suitable dynamics which drives these “spacetime tiles” to form a large-structure which resembles our universe. I will investigate if and how a well defined continuum limit can be taken in different approaches to quantum gravity. The main tool I will employ is the renormalization group which allows one to probe physics at different length scales, very much like a “microscope”. Recently, I developed renormalization group techniques suitable for coarse-graining theories of quantum geometry. This constitutes an extremely versatile toolbox which will allow me to explore synergies between different discrete approaches to quantum gravity and extract universal properties a consistent theory of quantum gravity should feature. This paves the way for my quest of finding suitable continuum limits for quantum gravity and establish qualitative as well as quantitative comparison between physical quantities computed within diverse approaches heading towards a complete picture of quantum spacetime.", "award_amount": 250000, "grant_id": "https://doi.org/10.61686/RFCUN61696", "project_members": [ { "role": "Researcher", "member_id": 404211, "last_name": "Duarte Pereira", "degree_pre_nominal": "dr.", "degree_post_nominal": "Jr", "initials": "A.", "first_name": "Antonio", "organisation": "Radboud Universiteit Nijmegen", "organisation_id": 14509, "ror": "https://ror.org/016xsfp80", "active": false }, { "role": "Project leader", "member_id": 404211, "last_name": "Duarte Pereira", "degree_pre_nominal": "dr.", "degree_post_nominal": "Jr", "initials": "A.", "first_name": "Antonio", "organisation": "Radboud Universiteit Nijmegen", "organisation_id": 14509, "ror": "https://ror.org/016xsfp80", "active": true }, { "role": "Main Applicant", "member_id": 404211, "last_name": "Duarte Pereira", "degree_pre_nominal": "dr.", "degree_post_nominal": "Jr", "initials": "A.", "first_name": "Antonio", "organisation": "Universität Heidelberg", "organisation_id": 8523, "ror": "-", "active": true } ], "products": [ { "title": "Toward background field independence within the Gribov horizon", "year": 2022, "edition": "106", "start": 25015, "end": 25015, "type": "Wetenschappelijk artikel", "url_open_access": "10.1103/PhysRevD.106.025015", "journal_title": "Physical Review D", "authors": [ { "last_name": "D. Pereira", "initials": "A", "first_name": "Antonio", "role": "Auteur" }, { "last_name": "Justo", "initials": "I", "first_name": "Igor", "role": "Auteur" }, { "last_name": "Sobreiro", "initials": "R", "first_name": "Rodrigo", "role": "Auteur" } ] }, { "title": "Exploring new corners of asymptotically safe unimodular quantum gravity", "year": 2021, "edition": "10", "start": 104023, "end": 104023, "type": "Wetenschappelijk artikel", "url_open_access": "10.1103/PhysRevD.103.104023", "journal_title": "Physical Review D", "authors": [ { "last_name": "Pereira", "initials": "A. D.", "role": "Auteur" }, { "last_name": "Vieira", "initials": "A. F.", "role": "Auteur" }, { "last_name": "de Brito", "initials": "G. P.", "role": "Auteur" } ] }, { "title": "Fate of chiral symmetry in Riemann-Cartan geometry", "year": 2023, "edition": "108", "start": 45012, "end": 45012, "type": "Wetenschappelijk artikel", "url_open_access": "https://doi.org/10.1103/PhysRevD.108.045012", "journal_title": "Physical Review D", "authors": [ { "last_name": "Pereira", "initials": "A. D.", "role": "Auteur" }, { "last_name": "Vieira", "initials": "A. F.", "role": "Auteur" }, { "last_name": "de Brito", "initials": "G. P.", "role": "Auteur" } ] }, { "title": "Scalar-tensor theories within Asymptotic Safety", "year": 2021, "edition": "12", "start": 1, "end": 49, "type": "Wetenschappelijk artikel", "url_open_access": "10.1007/JHEP12(2021)001", "journal_title": "Journal of High Energy Physics", "authors": [ { "last_name": "Pereira", "initials": "A. D.", "role": "Auteur" }, { "last_name": "Laporte", "initials": "C.", "role": "Auteur" }, { "last_name": "Saueressig", "initials": "F.", "role": "Auteur" }, { "last_name": "Wang", "initials": "J.", "role": "Auteur" } ] }, { "title": "Evidence for a novel shift-symmetric universality class from the functional renormalization group", "year": 2023, "edition": "838", "start": 1, "end": 10, "type": "Wetenschappelijk artikel", "url_open_access": "https://doi.org/10.1016/j.physletb.2022.137666", "journal_title": "Physics Letters B", "authors": [ { "last_name": "Pereira", "initials": "A. D.", "role": "Auteur" }, { "last_name": "Laporte", "initials": "C.", "role": "Auteur" }, { "last_name": "Saueressig", "initials": "F.", "role": "Auteur" }, { "last_name": "Locht", "initials": "N.", "role": "Auteur" } ] }, { "title": "Infrared propagators of Yang-Mills-Chern-Simons theories in linear covariant gauges", "year": 2021, "edition": "104", "start": 45007, "end": 45007, "type": "Wetenschappelijk artikel", "url_open_access": "10.1103/PhysRevD.104.045007", "journal_title": "Physical Review D", "authors": [ { "last_name": "Pereira", "initials": "A. D.", "role": "Auteur" }, { "last_name": "Granado", "initials": "D. R.", "role": "Auteur" }, { "last_name": "Justo", "initials": "I. F.", "role": "Auteur" }, { "last_name": "Ferreira", "initials": "L. C.", "role": "Auteur" } ] }, { "title": "Refined Gribov-Zwanziger theory coupled to scalar fields in the Landau gauge", "year": 2023, "edition": "107", "start": 114006, "end": 114006, "type": "Wetenschappelijk artikel", "url_open_access": "https://doi.org/10.1103/PhysRevD.107.114006", "journal_title": "Physical Review D", "authors": [ { "last_name": "Pereira", "initials": "A. D.", "role": "Auteur" }, { "last_name": "de Brito", "initials": "G. P.", "role": "Auteur" }, { "last_name": "de Fabritiis", "initials": "P.", "role": "Auteur" } ] }, { "title": "Can quantum fluctuations differentiate between standard and unimodular gravity?", "year": 2021, "edition": "2021", "start": 1, "end": 20, "type": "Wetenschappelijk artikel", "url_open_access": "10.1007/JHEP12(2021)090", "journal_title": "Journal of High Energy Physics", "authors": [ { "last_name": "Pereira", "initials": "A. D.", "role": "Auteur" } ] } ] } ] }