About

I am a theoretical/computational physicist with a primary interest in cosmology, from the point of view of theory and simulations. More specifically, I am interested in testing fundamental physics using information from Large-Scale Structures (LLS).

I obtained my undergrad and master's degree at the University of São Paulo (USP), Brazil, followed by a PhD at the University of Aix-Marseille.

During my masters, I worked with the multi-tracer technique to improve constrains on the growth-rate of structures, an important observable to test gravity on large-scales.

During my PhD, I have studied one particular type of tracer - cosmic voids and the weak-lensing signal around them. I have proposed a method for measuring this signal, as well as conditions which might be satisfied to ensure that we have access to the dark-matter profile of voids through weak-lensing.

In the future, I would like to continue to contribute to the program of testing the ΛCDM paradigm by extracting relevant information from Large-Scale Structures.

Publications

Towards cosmology with Void Lensing: how to find voids sensitive to weak-lensing and numerically interpret them
Renan Boschetti, Pauline Vielzeuf, Marie-Claude Cousinou, Stephanie Escoffier, Eric Jullo
(Nov 24, 2023)

Fisher matrix for multiple tracers: all you can learn from large-scale structure without assuming a model
Renan Boschetti, L. Raul Abramo, Luca Amendola
(May 5, 2020) Published in: JCAP 11 (2020) 054

and coming soon

The Void-Lensing model: How to cosmologically interpret the weak-lensing signal around 2D voids (in prep.)
Renan boschetti et al.

Incorporating curved geometry in cosmological simulations (in prep.)
Julian Adamek and Renan Boschetti

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i = 0;

while (!deck.isInOrder()) {
    print 'Iteration ' + i;
    deck.shuffle();
    i++;
}

print 'It took ' + i + ' iterations to sort the deck.';

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Item One Ante turpis integer aliquet porttitor. 29.99
Item Two Vis ac commodo adipiscing arcu aliquet. 19.99
Item Three Morbi faucibus arcu accumsan lorem. 29.99
Item Four Vitae integer tempus condimentum. 19.99
Item Five Ante turpis integer aliquet porttitor. 29.99
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Item One Ante turpis integer aliquet porttitor. 29.99
Item Two Vis ac commodo adipiscing arcu aliquet. 19.99
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Item Four Vitae integer tempus condimentum. 19.99
Item Five Ante turpis integer aliquet porttitor. 29.99
100.00

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Outreach

During my masters, I participated in a science communication video contest, for which I created this modest production to explain my research.

Teaching

I was a teaching assistant in a cosmology course at the Universe of São Paulo in 2020. During this course, I created some exercises that can be found here.

Exercise list 1

Exercise list 2

Exercise list 3

Exercise list 4

During my undergraduate days, I used to give calculus lectures to students from oceanography, economics, and other disciplines. These are my lecture notes.

Calculus I notes

Personal

I have a couple of interests beyond cosmology. The most prominent one is science in general. I am fascinated not only by observational cosmology but also by theoretical physics. What drives me in science is the desire to satisfy my endless curiosity about the nature of the Universe.

In recent years, I’ve developed a strong interest in neuroscience and its intersection with artificial intelligence. There are plenty of fascinating questions that arise from this convergence.

Beyond science, I’m an amateur musician. I spend many of my free hours playing guitar and trying to learn the keyboard.