I am a theoretical physicist specializing in various aspects of high-energy physics and gravity, working at the intersection of particle physics, quantum field theory, general relativity, and cosmology.

My main scientific goal lies in developing theoretical methods to test fundamental physics in phenomenological setups such as cosmology and gravitational waves.

I am currently focused on understanding the symmetries of genuine non-linear perturbations in the simplest models of cosmic inflation and exploring how these connect to observables in the cosmic microwave background (CMB) radiation, the galaxy distribution in the large-scale structure (LSS) of the universe, and the stochastic gravitational wave background (SGWB), as well as their potential impact on the production of primordial black holes. I am also working on how fundamental principles such as locality, unitarity, and causality can theoretically constrain our current models of cosmological perturbations, allowing us to compare them with cosmological data.

Publications

  1. R. Bravo and G. A. Palma, “Unifying attractor and non-attractor models of inflation under a single soft theorem”, Phys. Rev. D 107, 043524 (2023) [arXiv: 2301.12345]

  2. R. Bravo, G. A. Palma and S. Riquelme M., “A tip for landscape riders: multi-field Inflation can fulfill the swampland distance conjecture”, JCAP 2002, no. 02, 004 (2020) [arXiv: 1906.05772]

  3. R. Bravo, S. Mooij, G. A. Palma and B. Pradenas, “Vanishing of local non-Gaussianity in canonical single field inflation””, JCAP 1805, 025 (2018) [arXiv: 1711.05290]

  4. R. Bravo, S. Mooij, G. A. Palma and B. Pradenas, “A generalized non-Gaussian consistency relation for single field inflation”, JCAP 1805, 024 (2018) [arXiv: 1711.02680]

  5. R. Bravo and M. S. Plyushchay, “Position-dependent mass, finite-gap systems, and supersymmetry”, Phys. Rev. D 93, no. 10, 105023 (2016) [arXiv: 1512.09220]

Research Grants

  1. “Testing the Primordial Signals of our Universe”, FONDECYT Postdoc. Grant number: 3240730. PI: R. Bravo. (2024)

  2. “Primordial Black Holes: A Window to the Primordial Universe Through Gravitational Waves”, Swiss Federal Department of Economic Affairs, Education and Research. Grant number: 2021.0519. PI: R. Bravo. (2021-2023)

Selected Talks

Talk Title Event Institution Type Date and Location
Testing the Primordial Signals of our Universe High Energy Physics Seminar Physics Institute, Universidad Católica de Chile Seminar November 27, 2024, Santiago, Chile
A new soft theorem for single field inflation The Part And The Whole: workshop on advanced topics on high-energy physics and gravitation - Workshop January 04–08, 2021 (online)
A generalized non-Gaussian consistency relation for single field inflation Cosmology from Home 2020 - Conference August 24 – September 04, 2020 (online)
Non-Gaussianities: from single field inflation to swampland conjectures Cosmology Seminar Instituut Lorentz for Theoretical Physics, Universiteit Leiden Seminar November 13, 2019, Leiden, Netherlands
Position-dependent mass, finite-gap systems and supersymmetry 7th International Workshop on New Challenges in Quantum Mechanics: Integrability and Supersymmetry Centro de Ciencias de Benasque Pedro Pascual Conference September 01–07, 2019, Benasque, Spain
Multi-field inflation overcomes the swampland distance conjecture Inflation and Geometry Institut d’Astrophysique de Paris Conference June 11–13, 2019, Paris, France
A generalized non-Gaussian consistency relation for single field inflation South American Workshop on Cosmology in the LSST era ICTP-SAIFR Conference December 17–21, 2018, São Paulo, Brazil
Publications
  1. R. Bravo and G. A. Palma, “Unifying attractor and non-attractor models of inflation under a single soft theorem", Phys. Rev. D 107, 043524 (2023) [arXiv: 2301.12345]
  2. R. Bravo, G. A. Palma and S. Riquelme M., “A tip for landscape riders: multi-field Inflation can fulfill the swampland distance conjecture", JCAP 2002, no. 02, 004 (2020) [arXiv: 1906.05772]
  3. R. Bravo, S. Mooij, G. A. Palma and B. Pradenas, “Vanishing of local non-Gaussianity in canonical single field inflation", JCAP 1805, 025 (2018) [arXiv: 1711.05290]
  4. R. Bravo, S. Mooij, G. A. Palma and B. Pradenas, “A generalized non-Gaussian consistency relation for single field inflation", JCAP 1805, 024 (2018) [arXiv: 1711.02680]
  5. R. Bravo and M. S. Plyushchay, “Position-dependent mass, finite-gap systems, and supersymmetry", Phys. Rev. D 93, no. 10, 105023 (2016) [arXiv: 1512.09220]
Research Grants
  1. "Testing the Primordial Signals of our Universe", FONDECYT Postdoc. Grant number: 3240730. PI: R. Bravo. (2024)
  2. "Primordial Black Holes: A Window to the Primordial Universe Through Gravitational Waves", Swiss Federal Department of Economic Affairs, Education and Research. Grant number: 2021.0519. PI: R. Bravo. (2021–2023)
Selected Talks
Talk Title Event Institution Type Date and Location
Testing the Primordial Signals of our Universe High Energy Physics Seminar Physics Institute, Universidad Católica de Chile Seminar November 27, 2024, Santiago, Chile
A new soft theorem for single field inflation The Part And The Whole: workshop on advanced topics on high-energy physics and gravitation - Workshop January 04–08, 2021 (online)
A generalized non-Gaussian consistency relation for single field inflation Cosmology from Home 2020 - Conference August 24 – September 04, 2020 (online)
Non-Gaussianities: from single field inflation to swampland conjectures Cosmology Seminar Instituut Lorentz for Theoretical Physics, Universiteit Leiden Seminar November 13, 2019, Leiden, Netherlands
Position-dependent mass, finite-gap systems and supersymmetry 7th International Workshop on New Challenges in Quantum Mechanics: Integrability and Supersymmetry Centro de Ciencias de Benasque Pedro Pascual Conference September 01–07, 2019, Benasque, Spain
Multi-field inflation overcomes the swampland distance conjecture Inflation and Geometry Institut d'Astrophysique de Paris Conference June 11–13, 2019, Paris, France
A generalized non-Gaussian consistency relation for single field inflation South American Workshop on Cosmology in the LSST era ICTP-SAIFR Conference December 17–21, 2018, São Paulo, Brazil