3rd Winter School: Topics on Gravituculas Santiago

CosmoSur VI Conference Córdoba, Argentina

Regularizing infrared divergences link arXiv

Renormalization in cosmology Present

Advisor: Gonzalo Palma

Considering quantum loops corrections to Feynman diagrams usually implies the presence of divergences that need to be renormalized using counterterms. We are renormalizating our theory with an arbitrary potential and diagrams with one vertex and an arbitrary number of loops.

Statistics of spectator fields with wavefunction of the Universe Present

Advisor: Gonzalo Palma

Considering multifield inflation models we can consider a spectator field that affects the evolution of the curvature perturbation. In this work we use the wavefunction of the Universe formalism in order to compute the PDF of this spectator field and, then, also the PDF of the primordial perturbation.

Non-Gaussianities from n-point correlation functions Present

Advisor: Gonzalo Palma

Using the Schwinger-Keldysh path integral formalism, we are calculating the n-point correlation function of the primordial curvature perturbation in order to calculate its probability density function. I presented my current results in Graviticulas School.

Excitation of quantum states during the primordial universe Present

Advisor: Gonzalo Palma and Claudio Muñoz

The curvature and isocurvature perturbations of a multifield model can be described using Bogoliubov coefficients. We are analytically calculating these four coefficients that are governed by a system of coupled ODEs. I presented my results in CosmoSur VI conference.

Phases of higher spin black holes: Hawking-Page, transitions between black holes and a critical point 2022

Advisor: Alberto Faraggi

We study the thermodynamic phase diagram of three-dimensional sl(N;R) higher spin black holes. By analyzing the semi-classical partition function we uncover a rich structure that includes Hawking-Page transitions to the AdS3 vacuum, first order phase transitions among black hole states, and a second order critical point.

Super massive binary black hole merge Summer Internship 2022

Advisor: Andrés Escala

With 3D computer simulations we found a significant difference between SMBHBs with and without AGN feedback, contradicting a L. del Valle, M. Volonteri 2018 assertion.

Structures in protoplanetary disks 2021

Advisor: Aníbal Sierra

We studied the dust dynamics in young protoplanetary disks, analytically and using computer models simulating the observations that would be obtained with ALMA.

Summer School on Cosmology ICTP Trieste, Italy

"This school provides an introduction to the current state of research in cosmology and astroparticle physics. It is intended for beginning graduate students, as well as more senior non-expert researchers interested in the field."

Perimeter-SAIFR Journeys into Theoretical Physics Sao Paulo, Brasil

"School aimed at outstanding undergraduates in their last year from all countries in Latin America. It is associated with a partnership between ICTP-SAIFR at IFT-UNESP and the Perimeter Institute for Theoretical Physics."

CosmoSur VI Conference Córdoba, Argentina

International conference where I presented the poster of my internship.

Talks

I have given talks in different universities/activities:

• Institut Astrophysique de Paris - France
• Instituto de Física Teórica - Spain
• CosmoConce y Partículas - Chile

Others Chile

• Cosmology and Particles Conference - Chillán
• Black Holes, Holography and Beyond School and Workshop- Concepción
• Latin American School and Workshop on Gravity and Holography - Santiago
• Asymptotic symmetries & Holography - Santiago
• Graviticulas - Santiago
• CosmoConce - Concepción
• Topological and Holographic Quantum Matter School - Santiago
• Theory and Observations in Einstein’s Theory of Gravity and its Modifications School - Santiago
• Workshop on Celestial Holography and Asymptotic Symmetries - Santiago