Dr. Leandro Silva Pimenta

Theoretical Physicist & Software Developer

About me About the Kaleidoscope

About Me

I am a physicist, engineer, and software developer based in Paris, blending over five years of Python software development with deep theoretical research. My work experience ranges from general relativity to quantum information, and includes stochastic processes, computational fluid dynamics and holography. I am passionate about translating complex solutions into industry-grade software.

I hold a Ph.D. from the APC Laboratory at Université Paris Cité (the same laboratory as the Nobel laureate George Smoot), a Master's degree from École Normale Supérieure (ENS)—the institution with the highest Nobel-Prize-per-alumni ratio, an Engineering degree and an Advanced Master's degree from ESPCI Paris, an institution with a history of 7 Nobel prizes in Physics and Chemistry, and a B.Sc. in Physics from the University of São Paulo, the most prestigious Latin-American university in the world. Two excellence scholarships from ESPCI and a FAPESP grant further attest to my strong academic trajectory.

Combining this rigorous scientific foundation with hands-on coding expertise, I thrive on solving challenging problems and delivering robust, scalable software solutions.

Dr. Leandro Silva Pimenta

Education

Global Knowledge

Python Designer & Developer

July - October 2019

Rueil-Malmaison, France

Université Paris Cité - 'AstroParticule et Cosmologie' laboratory

PhD in Theoretical Physics

October 2015 - September 2018

Paris, France

"Aspects of Holographic Renormalization Group Flows"

École Normale Supérieure - International Center for Fundamental Physics

Master's in Theoretical Physics

September 2014 - July 2015

Paris, France

École Supérieure de Physique et de Chimie Industrielles de la ville de Paris

ESPCI Engineer - Physics & Chemistry

January 2012 - July 2014

Paris, France

Universidade de São Paulo - Instituto de Física de São Carlos

Bachelor in Physics

January 2008 - July 2011

São Carlos, Brazil

FAPESP Scientific Initiaition project: Introduction to functional analysis in Banach and Hilbert spaces aiming at quantum field theory

Publications & Experience

  • Publications
  • Research
  • Teaching
  • Programming
Google Scholar ORCID InspireHEP

Divisible and indivisible Stochastic-Quantum dynamics

May 2025

Author: Leandro Silva Pimenta

Preprint on arXiv:2505.08785 [quant-ph]

https://arxiv.org/abs/2505.08785

Exotic holographic RG flows at finite temperature

October 2018

Authors: Umut Gürsoy, Elias Kiritsis, Francesco Nitti, Leandro Silva Pimenta

Published in the "Journal of High Energy Physics" volume 2018, article article number: 173 (2018)

https://doi.org/10.1007/JHEP10(2018)173

https://arxiv.org/abs/1805.01769

On multi-field flows in gravity, and holography

July 2018

Authors: Francesco Nitti, Leandro Silva Pimenta, Danièle A. Steer

Published in the "Journal of High Energy Physics" volume 2018, article number: 22 (2018)

https://doi.org/10.1007/JHEP07(2018)022

https://arxiv.org/abs/1711.10969

Exotic RG flows from holography

January 2017

Authors: Elias Kiritsis, Francesco Nitti, Leandro Silva Pimenta

Published in "Progress of Physics", volume 65 (2017) number 2, 1600120

https://doi.org/10.1002/prop.201600120

https://arxiv.org/abs/1611.05493

Laboratoire 'AstroParticule et Cosmologie' - Université Paris Cité

PhD - "Aspects of Holographic Renormalisation Group Flows"

October 2015 - September 2018

Paris, France

  • Application of gauge-gravity duality to the study of renormalisation.
  • Derivation, study and classification of new solutions for holographic renormalisation equations.
  • Demonstration of the exhaustive nature of the family of solutions.
  • Implications for the renormalisation group: exotic solutions with flow inversion at one coupling, flows between minima.
  • Generalisation to finite temperatures.
  • Implementation of numerical methods with examples of these new categories of solutions.
  • Analysis of the physical consistency and thermodynamics of these solutions, identifying a phase transition.

'AstroParticule et Cosmologie' laboratory - Université Paris Cité

Internship - "Théories conformes et unimodulaires de la gravité"

January 2015 - February 2015

Paris, France

  • Analysed two modifications of General Relativity motivated by cosmology and quantum gravity.
  • Imposition of constraints which led to their equivalence and analysis of inequivalent cases.
  • Differential geometry, conformal classes and connection.
  • Programming with the Wolfram language, Mathematica software.

Laboratoire de Physique et d'Étude des Matériaux, CNRS/UPMC/ESPCI

Internship - "Study of electrons scattering on the surface of topological insulators"

September 2012 - February 2013

Paris, France

  • Analysis of two examples of a class of materials called "topological insulators."
  • Study of the pseudo-relativistic behaviour of quasi-particles on the surface of these materials.
  • Quantum modelling of surface states and hexagonal deformations of the Dirac cone.
  • Study of the generation of magnetic fields during diffusion on line and point defects.

Acadomia - www.acadomia.fr

Teacher of Mathematics and Physics

October 2019 - current

Paris, France

  • Group and private classes for high-school and higher education students.
  • Educational follow-up throughout the school year.

L'Ecole Florale - Emova Group

Teacher in Mathematics, Physics and Chemistry

September 2020 - June 2021

Issy-les-Moulineaux, France

  • Science and mathematics classes for future florists.
  • Responsible for teaching, exams, laboratory experiments and pedagogical follow-up.

Medical School - Université Paris Cité

Physics Teacher

August 2017 - December 2017

Paris, France

  • Hydrostatics, electrostatics, kinematics.
  • Weekly exercise sessions for first-year medical students.

Senior Software Developer at Axialys

November 2023 - February 2024

Courbevoie, France

  • API design and development in Clean Architecture
  • Web development - REST API, FastAPI, MySQL, SQLAlchemy, Docker
  • Version control (Git), continuous integration (GitLab)
  • Automatic tests (pytest, unittest, Postman), TDD

Consultant at ALTEN for Air Liquide

June 2021 - October 2023

Les Loges-en-Josas, France

  • Software development: gas physics for industrial installations
  • Design of an object-oriented architecture for a Fortran 90 migration -> Python 3.10
  • Numerical methods in fluid mechanics
  • Vectorization (numpy), on-the-fly compilation (numba)
  • Documentation of the code (Sphinx, PlantUML), and of the computational methods (dokuwiki, LATEX)
  • Comparative analysis of existing data with scientific literature and internal documents
  • Version control (Git, GitLab)
  • Automatic tests, TDD, refactoring

Back-end developer at SportEasy

September 2020 - June 2021

Paris, France

  • Development of new features in Python
  • Bug fixes and existing improvements
  • Multilingual application: translation into Portuguese, analysis of existing translations
  • Creating and improving API routes with Python and Django
  • Backend connectivity with Android and iOS apps via Django API
  • Dependency and isolation management via virtual environments and containers (Docker)
  • Version control (Git), sharing and continuous delivery (GitLab)
  • Automatic tests, TDD, refactoring

The Kaleidoscope Background

The science behind it

The interactive kaleidoscope background is inspired by my most recent scientific publication, at the intersection of physics, probability and information theory. Find out more about it by reading the original publication and come back soon to explore more interactive content that illustrates results from the article. Just as a kaleidoscope creates complex patterns from simple elements through reflection and symmetry, my approach to theoretical physics and software development involves finding elegant patterns in complex systems.

Technical Implementation

This kaleidoscope background is a real-time interactive visualization built with vanilla JavaScript, CSS transforms, and SVG graphics. The implementation creates a responsive grid of synchronized 2×2 block patterns, where each block contains four mirrored squares using CSS scaling transformations to achieve perfect kaleidoscopic symmetry. As your mouse moves across any block, JavaScript calculates normalized coordinates and propagates them to every block simultaneously, creating a mesmerizing synchronized effect across the entire screen.

The geometric patterns are rendered using SVG elements including dynamic polygons for shading, intersection-calculated lines that extend to borders, and animated dots with glowing effects. The system automatically adapts to screen dimensions by calculating optimal block sizes and supports both light and dark themes that respond to system preferences, while also including performance optimisations like debounced resize handling and throttled touch events for mobile devices.

Interactive Elements

The patterns you see in the background reflect concepts from my research:

  • Probability Theory

    Exploring the mathematical frameworks that model randomness and uncertainty in our world.

  • Stochastic Dynamics

    Illustrating how complex systems evolve randomly over time according to probability distributions.

  • Quantum Dynamics

    Indivisible dynamics are a powerful tool for modelling quantum systems through probabilities.

Connect With Me

LinkedIn

Feel free to connect with me on LinkedIn for professional inquiries.

Back to Main Page

Legal Information

Mentions Légales

Ce site est édité à titre personnel.

Éditeur du site : Dr. Leandro Silva Pimenta

Hébergeur du site : Cloudflare, Inc.
101 Townsend St, San Francisco, CA 94107, USA
Site web : www.cloudflare.com

Directeur de la publication : Dr. Leandro Silva Pimenta

Privacy Policy

1. Data Collection

This website is a static site hosted on Cloudflare Pages and is designed to respect your privacy. It does not collect, store, or process personal data from visitors. The site uses only necessary technical cookies required for the proper functioning of the website and Cloudflare's content delivery network.

2. Cookies

This website uses minimal technical cookies that are strictly necessary for the website to function properly and for Cloudflare's content delivery network to operate efficiently. These cookies do not collect any personal information about you and cannot be used to identify you. Cloudflare may set cookies for security and performance optimisation of the website delivery.

You can configure your browser to inform you of the presence of cookies and to reject them, accept them or delete them. You may experience reduced functionality if you choose to disable cookies entirely.

3. Analytics

This website may use Cloudflare Analytics to collect anonymous aggregated information about how visitors use the site. This service collects data such as page views, visitor counts, and basic browser information without using tracking cookies or collecting personally identifiable information. This data is used solely to understand website usage patterns and improve the site's performance and content.

4. Third-Party Access

No third parties have access to any information that might be collected through this website.

5. Your Rights

In accordance with the General Data Protection Regulation (GDPR) and French data protection laws, you have the right to access, rectify, and delete any personal data concerning you. As this website does not collect personal data, these rights are not applicable in this context.

6. Updates to This Policy

This privacy policy may be updated occasionally to reflect changes in legal requirements or website functionality. Any changes will be posted on this page.

7. Contact

For any questions regarding this privacy policy, you can contact me through LinkedIn.

Terms of Use

By accessing and using this website, you accept and agree to be bound by the terms and provisions of this agreement.

1. Intellectual Property

All content on this website, including text, graphics, logos, images, and software, is the property of Dr. Leandro Silva Pimenta and is protected by French and international copyright laws.

2. Limitations of Use

The content of this website is for your general information and use only. It is subject to change without notice. You may not modify, copy, distribute, transmit, display, perform, reproduce, publish, license, create derivative works from, transfer, or sell any information obtained from this website.

3. Disclaimer

This is a personal portfolio website provided for informational purposes only. The information on this website is provided on an "as is" basis. While every effort is made to ensure accuracy, no warranties are made regarding the completeness or accuracy of the information. To the fullest extent permitted by law, this website:

  • Excludes all representations and warranties relating to this website and its contents.
  • Excludes all liability for damages arising out of or in connection with your use of this website.
  • The content reflects the professional experience and qualifications of Dr. Leandro Silva Pimenta as of the publication date.

4. Governing Law

These terms and conditions are governed by and construed in accordance with the laws of France. Any disputes relating to these terms and conditions shall be subject to the exclusive jurisdiction of the courts of France.