• Amphibian Worship Temple

  • LET US GATHER
    around the lily pad

About Me

Introduction

I am Javier, a humble physics master of science student in Universidad de Chile. Until 2023 I was member of the Holographycl Anillo group and currently I'm part of Cosmology and Theoretical Astrophysics FCFM group.

In this webpage you can find: personal notes, research stuff, and FI2001, FI2002, FI3111, and FI7011 (FCFM) T.A. course material.

MSc physics student

BSc Astronomy

Mini pekka

Apuntes Mecánica FI2001 "Cómo se abordan los problemas":

Sesiones de ejercitación:

Cuenta regresiva para la PRIMERA purga:

Mechanics FI2001, Electromagnetism FI2002, Classical Mechanics FI3111, and Quantum Field Theory FI7011

Material

Mecánica

Auxiliares



Teoría Cuántica de Campos

Mecánica Otoño

Auxiliares

Ejercicios



Mecánica Verano

Mecánica Clásica

Tareas

  • Tarea 1
  • Tarea 2
  • Tarea 3
  • Tarea 4
  • Tarea 5
  • Tarea 6
  • Tarea 7
  • Tarea 8
  • Tarea 9
  • Tarea 10
  • Tarea 11
  • Tarea 12
  • Tarea 13

Controles

  • Control 1
  • Examen

Mecánica

Auxiliares

Ejercicios

Controles



Electromagnetismo

Auxiliares

Tareas

  • Tarea 1
  • Tarea 2
  • Tarea 3
  • Tarea 4

Controles

Mecánica

Ejercicios

Controles

Mecánica

Tareas

Ejercicios

Controles

Cups of coffee
Puppies
Publications

Canción de la semana

Experience

Posters and Papers

Loops with Wavefunction of the Universe link arXiv

Experience

Research Experience

Loop resummation in de Sitter spacetime with the wavefunction of the universe approach 2024

Advisor: Gonzalo Palma and Spyros Sypsas

This paper extends our previous work by employing the Wavefunction of the Universe approach to compute n-point correlation functions in a single-field inflation model. We show that while WFU coefficients do not exhibit IR divergences, appropriate loop resummation recovers the known results, including both UV and IR divergences.

Bogoliubov coefficients in multi-field inflation Present

Advisor: Gonzalo Palma and Claudio Muñoz

Due to particle creation in time-dependent inflation, it is useful to describe a multi-field model using Bogoliubov transformations. The resulting coefficients satisfy a first-order differential system, which we aim to solve analytically. This will enable a complete non-perturbative computation of the primordial power spectrum. I presented my results in CosmoSur VI conference.

Phase transition of higher spin black holes in 2+1-dimensions 2022

Advisor: Alberto Faraggi

Inspired by the BTZ black hole, we use Chern-Simons theory in 2+1 dimensions to study the thermodynamics of black holes in AdS space. We calculate the associated charges and, through numerical methods, demonstrate that these charges undergo phase transitions and exhibit critical points.

Supermassive black hole binary mergers Summer Internship 2022

Advisor: Andrés Escala

Using the RAMSES and RAMSES-RT codes, we performed large-scale simulations of SMBHB merger evolution, considering interactions of BHs with the circumbinary gas disk and AGN feedback. We identify the conditions necessary for the merger to occur, and, in that case, we estimate the time required for the process.

Structures in protoplanetary disks 2021

Advisor: Aníbal Sierra

We study the formation of structures in protoplanetary disks during their early evolution, focusing on the interactions among dust particles of varying sizes and distributions. To do this, we analyze dust dynamics analytically and create computer models of luminosity and optical density to simulate observations with the ALMA observatory.

Experience

Conferences and Schools

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."

Talks

I have given talks in different universities/activities:

  • Institut Astrophysique de Paris - France
  • Instituto de Física Teórica - Spain
  • Pontificia Universidad Católica de Valparaíso - Chile
  • Uinversidad del Bío-Bío - Chile
  • Pontificia Universidad Católica - 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
  • Advances in Cosmology from the Southern Hemisphere - Valparaíso
Random stuff

Some photos

PERIMETER-SAIFR - SAO PAULO 2022

Informal meeting

En toda latinoamérica son igual de borrachos

Liberdade

Largest Japantown in the world

Sturani's lecture

Qué hombre dios mio

Chilean team

Falta Monse Aguayo

COSMOSUR - CORDOBA 2022

Poster presentation

Excitation of quantum states during the primordial universe

COSMOCONCE - CONCEPCIÓN 2023

Presentación

¿Es renormalizable?

Gonzalo's CMB

Now its mine

Presentación

Un clásico

ICTP SCHOOL - ITALY 2024

INSTITUT d'ASTROPHYSIQUE DE PARIS VISIT - FRANCE 2024

Natural History Museum of Paris

Gioconda

Eiffel tower

AMSTERDAM AND LEIDEN - NETHERLANDS 2024

Leiden University

La flaca

Rijks Museum

Un ganso peleando con un perrito igual al mio

Random Einstein mural

Windmills

Recomendación de la Naya easy

CACHUPINES

Kumri

Yagui

Chispa

Denuevo la kumri

Get in Touch

Contact

Tercer piso Departamento de Física