🔭 Theoretical Cosmology - 🌌 Multi‑Field Dark Energy - 🧩 Quantum Gravity

Physics undergraduate at Universidad Nacional de Colombia. Final semester. Thesis on multi‑field quintessence, how non‑geodesic trajectories in curved field spaces let steep potentials drive cosmic acceleration while dodging the de Sitter swampland conjecture.

I build numerical tools to simulate cosmological dynamics, plus the occasional quantum tomography or astronomy pipeline. Fine‑tuning is for people who gave up.

Python toolkit to reproduce background dynamics from Akrami et al. (2021)

Replicates phase‑space trajectories ($\omega_\phi$, $\Omega_\phi$) for power‑law and hyperbolic field‑space metrics, plus the swampland ratio $|\nabla V|/V$. Key result from my thesis:

• Hyperbolic metric $f(r)=e^{\beta r}$ → $\omega_{\text{DE}}$ evolves from $>-1$ at high redshift toward $-1$ today (matches DESI hints).
• Power‑law metric $f(r)=r^p$ works for $p=2$, fails for $p=3$.
• Verified $|\nabla V|/V \gtrsim \mathcal{O}(1)$ everywhere, no swampland violation.

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Light curves from TESS Full Frame Images, your way

Automated catalog from Gaia DR3, direct FFI downloads from MAST, aperture photometry with background subtraction, parallel processing, Lomb‑Scargle periodograms. Why not just use Lightkurve? Coltess gives you full control – custom apertures, faint targets, anything not in the TIC. When you need raw FFI photometry without black boxes.

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Deep learning for density matrix reconstruction

Implementation of Koutný et al. (2022). Maps measurement probabilities directly to physical density matrices via Cholesky decomposition. Architecture: 200→180→180→160→160→160→160→100 neurons, Nadam optimizer. Handles noise and finite statistics better than MLE.

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Numerical ODE solvers · Phase‑space analysis · Field‑space geometry · Aperture photometry · Quantum state reconstruction

• Homelab - because fuck Google Drive and subscription models. Local NAS, self‑hosted services (Tailscale, Jellyfin, the usual rabbit hole).
• Arch Linux daily driver - I use Arch btw. (Yes, I'll mention it in every conversation.)
• Random CLI tools for automating life – Check out my repos, maybe something is useful for you.

• Native Spanish, fluent English.
• I read arXiv: hep-th and astro-ph.CO like it's Twitter.
• My thesis advisor is Prof. Juan Pablo Beltran Almeida, ask him if I'm full of shit.
• Homelab addict. If it can be self‑hosted, it will be.
• I use Arch btw.

"The universe is under no obligation to make sense to you."

— Not me, but I feel it in my bones debugging ODEs at 2 AM.

Last updated: April 2026 – thesis defense incoming.