Thomas Colas

Postdoc in #cosmology at DAMTP @Cambridge_Uni | #earlyuniverse and #openEFTs 🌌

Bluesky: @cosmocolas.bsky.social 🦋

[Thomas Colas @CosmoColas]

📢Registration open for Contours 2026 — EFTs Meet the Schwinger–Keldysh Formalism!

📅 29 June – 3 July 2026
📍 DAMTP, University of Cambridge
Join us for a conference on non-equilibrium EFTs across #hydrodynamics, #blackholes, #holography & #cosmology

https://t.co/V2ONOikyW4

[Thomas Colas @CosmoColas]

Many thanks to everyone who discussed stochastic inflation, Schwinger–Keldysh EFTs and RG ideas with us over the past months. Discussions and feedback were extremely valuable throughout this project 🙏

[Thomas Colas @CosmoColas]

📄 New paper with Sebastián Céspedes🌌🌊
We revisit stochastic inflation from the viewpoint of Schwinger–Keldysh EFTs and Wilsonian RG.
Main message: stochastic inflation emerges as the IR limit of a real-time Wilsonian RG flow
https://t.co/YAugjvdfx3
#cosmology #qft #physics🧵

[Thomas Colas @CosmoColas]

This perspective opens many directions for stochastic inflation:
🔄 non-equilibrium RG flows
📉 infrared fixed points
⚛️ power counting and operator hierarchies
🌊 non-equilibrium steady states
and more generally a Wilsonian understanding of real-time cosmological evolution.

[Thomas Colas @CosmoColas]

Partie 2/2 : https://t.co/b2rE4Heph7

[Thomas Colas @CosmoColas]

[FR] Voici un petit cours introductif au formalisme de Schwinger-Keldysh pour les systèmes ouverts et hors-équilibres en cosmologie 🧑‍🏫 🌌

Merci au @CEAstrophysique
pour l'accueil et les échanges !

Partie 1/2: https://t.co/G7BrmQgbx7

[Lorel @lorel_sg]

Quel bruit fait l'Univers ? Un chercheur de l'Université de John Hopkins a tenté de répondre à cette question ! On estime que toutes les minutes, quelque part dans l'Univers observable, deux trous noirs entrent en collision et émettent alors un puissant signal d'ondes ...

[Thomas Colas @CosmoColas]

Here is our poster 😁

[Thomas Colas @CosmoColas]

📢Registration open for Contours 2026 — EFTs Meet the Schwinger–Keldysh Formalism!

📅 29 June – 3 July 2026
📍 DAMTP, University of Cambridge
Join us for a conference on non-equilibrium EFTs across #hydrodynamics, #blackholes, #holography & #cosmology

https://t.co/V2ONOikyW4

[Bahram Shakerin @BahramShakerin]

Cosmological Correlators: Theory and Phenomenology
Guilherme Pimentel

Website: https://t.co/WPoNHlPaFQ

[Thomas Colas @CosmoColas]

@LucienHeurtier Thanks a lot @LucienHeurtier 🙏
It has been an exciting week for PNG and CMB bispectrum on the @arxiv so far📡🛰️

[Thomas Colas @CosmoColas]

Arxiv link:
https://t.co/lIXZQzTEOU

[Thomas Colas @CosmoColas]

🛰️New paper out on arXiv!

We explore how dissipation and noise during inflation leave observable imprints in the CMB, using the Open EFT of Inflation (Open EFToI) 🧵👇 #cosmology #physics @Cambridge_Uni

https://t.co/iJpfbhilbT

[Thomas Colas @CosmoColas]

This opens a model-independent observational window onto primordial dissipation and noise, providing a new avenue to discriminate between early-Universe scenarios using CMB non-Gaussianity.

Excited to see how future data, in particular LSS, will sharpen these constraints! ☄️