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Employment (3)

Brazilian Center for Research in Physics: Rio de Janeiro, Rio de Janeiro, BR

2025-03-10 to present | Researcher (Department of Astrophysics, Cosmology and Fundamental Interactions)
Employment
Source: Self-asserted source
Leonardo Chataignier

University of the Basque Country: Leioa, ES

2023 to 2025 | Research Fellow (Department of Physics)
Employment
Source: Self-asserted source
Leonardo Chataignier

Università degli Studi di Bologna Dipartimento di Fisica e Astronomia 'Augusto Righi': Bologna, Emilia-Romagna, IT

2021 to 2023 | Research Fellow (Dipartimento di Fisica e Astronomia)
Employment
Source: Self-asserted source
Leonardo Chataignier

Education and qualifications (2)

University of Cologne: Cologne, DE

2017 to 2021 | PhD (Institute for Theoretical Physics)
Education
Source: Self-asserted source
Leonardo Chataignier

Universiteit Utrecht: Utrecht, Utrecht, NL

2015 to 2017 | Master's degree (Institute for Theoretical Physics)
Education
Source: Self-asserted source
Leonardo Chataignier

Works (16)

Phase time and Ehrenfest’s theorem in relativistic quantum mechanics and quantum gravity

Physical Review D
2024-12-23 | Journal article
DOI: 10.1103/PhysRevD.110.126023
Contributors: Leonardo Chataignier
Source: check_circle
Crossref

Relaxation of first-class constraints and the quantization of gauge theories: From “matter without matter” to the reappearance of time in quantum gravity

Annals of Physics
2024-11 | Journal article
DOI: 10.1016/j.aop.2024.169783
Contributors: Roberto Casadio; Leonardo Chataignier; Alexander Yu. Kamenshchik; Francisco G. Pedro; Alessandro Tronconi; Giovanni Venturi
Source: check_circle
Crossref

Time and its arrow from quantum geometrodynamics?

Journal of Physics: Conference Series
2024-11-01 | Journal article
DOI: 10.1088/1742-6596/2883/1/012008
Part of ISSN: 1742-6588
Part of ISSN: 1742-6596
Contributors: Claus Kiefer; Leonardo Chataignier; Mritunjay Tyagi
Source: Self-asserted source
Leonardo Chataignier

Observations in quantum cosmology

Classical and Quantum Gravity
2023-11-16 | Journal article
DOI: 10.1088/1361-6382/acfa5b
Contributors: Leonardo Chataignier; Claus Kiefer; Paulo Moniz
Source: check_circle
Crossref

Beyond semiclassical time: dynamics in quantum cosmology

Journal of Physics: Conference Series
2023-06-01 | Journal article
DOI: 10.1088/1742-6596/2533/1/012029
Part of ISSN: 1742-6588
Part of ISSN: 1742-6596
Contributors: Leonardo Chataignier
Source: Self-asserted source
Leonardo Chataignier

Reconstruction methods and the amplification of the inflationary spectrum

Physical Review D
2023-04-10 | Journal article
DOI: 10.1103/PhysRevD.107.083506
Contributors: Leonardo Chataignier; Alexander Yu. Kamenshchik; Alessandro Tronconi; Giovanni Venturi
Source: check_circle
Crossref

Reflected waves and quantum gravity

Physical Review D
2023-01-04 | Journal article
DOI: 10.1103/PhysRevD.107.026004
Contributors: Leonardo Chataignier; Alexander Yu. Kamenshchik; Alessandro Tronconi; Giovanni Venturi
Source: check_circle
Crossref

Regular black holes, universes without singularities, and phantom-scalar field transitions

Physical Review D
2023-01-04 | Journal article
DOI: 10.1103/PhysRevD.107.023508
Contributors: Leonardo Chataignier; Alexander Yu. Kamenshchik; Alessandro Tronconi; Giovanni Venturi
Source: check_circle
Crossref

Beyond semiclassical time

Zeitschrift für Naturforschung A
2022-08-26 | Journal article
DOI: 10.1515/zna-2022-0106
Contributors: Leonardo Chataignier
Source: check_circle
Crossref

Timeless Quantum Mechanics and the Early Universe

Springer International Publishing
2022-04 | Book
DOI: 10.1007/978-3-030-94448-3
ISBN: 9783030944476
ISBN: 9783030944483
Part of ISSN: 2190-5053
Part of ISSN: 2190-5061
Source: Self-asserted source
Leonardo Chataignier

Unitarity of quantum-gravitational corrections to primordial fluctuations in the Born-Oppenheimer approach

Physical Review D
2021-03-02 | Journal article
DOI: 10.1103/PhysRevD.103.066005
Contributors: Leonardo Chataignier; Manuel Krämer
Source: check_circle
Crossref

Relational observables, reference frames, and conditional probabilities

Physical Review D
2021-01-19 | Journal article
DOI: 10.1103/PhysRevD.103.026013
Contributors: Leonardo Chataignier
Source: check_circle
Crossref

Construction of quantum Dirac observables and the emergence of WKB time

Physical Review D
2020-04-01 | Journal article
DOI: 10.1103/physrevd.101.086001
Part of ISSN: 2470-0010
Contributors: Leonardo Chataignier
Source: Self-asserted source
Leonardo Chataignier via Crossref Metadata Search
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Gauge Fixing and the Semiclassical Interpretation of Quantum Cosmology

Zeitschrift für Naturforschung A
2019 | Journal article
DOI: 10.1515/zna-2019-0223
Part of ISSN: 1865-7109
Contributors: Leonardo Chataignier
Source: Self-asserted source
Leonardo Chataignier via Crossref Metadata Search
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Systematic analysis of radiative symmetry breaking in models with extended scalar sector

Journal of High Energy Physics
2018-08 | Journal article
DOI: 10.1007/jhep08(2018)083
Part of ISSN: 1029-8479
Contributors: Leonardo Chataignier; Tomislav Prokopec; Michael G. Schmidt; Bogumiła Świeżewska
Source: Self-asserted source
Leonardo Chataignier via Crossref Metadata Search
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Single-scale renormalisation group improvement of multi-scale effective potentials

Journal of High Energy Physics
2018-03-05 | Journal article
DOI: 10.1007/jhep03(2018)014
Part of ISSN: 1029-8479
Contributors: Leonardo Chataignier; Tomislav Prokopec; Michael G. Schmidt; Bogumiła Świeżewska
Source: Self-asserted source
Leonardo Chataignier via Crossref Metadata Search
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Peer review (2 reviews for 2 publications/grants)

Review activity for American journal of physics. (1)
Review activity for General relativity and gravitation. (1)
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