Postdoc in #cosmology @APC_Laboratory @univ_paris_cite | #earlyuniverse and Schwinger-Keldysh #EFTs 🌌 Bluesky: @cosmocolas.bsky.social 🦋
Joined February 2021
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Thomas Colas retweeted
📢 Working in Particle Physics, Astro, or Nuclear (PPAN) in the UK?
You received a survey regarding Early-Career Researchers and impact of STFC cuts on them.
If you didn't, PM me. We need as many ECRs to fill it asap, and you could help spread it.
If you were, spread it!🧪
Thomas Colas retweeted
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 retweeted
Cosmological Correlators: Theory and Phenomenology
Guilherme Pimentel
Website: courses.ipht.fr/?q=en%2Fnode…
Thomas Colas retweeted
Today's paper was a tour de force calculation by Tom, and it reveals many interesting new singularities of cosmological perturbation theory. Exciting times ahead!! arxiv.org/abs/2601.00952
Thomas Colas retweeted
The Inflation 2025 event held Dec 2 - 5 in Paris released slides today for the event (slides for 48 talks).
timetable with slides: indico.iap.fr/event/36/timet…
They're also now added to the cosmology researcher talks slides database at jrdmb.netlify.app/crsl.html
Thomas Colas retweeted
The Inflation 2025 talk videos playlist is now available, 57 recordings.
youtube.com/watch?v=Kq3F7kTe…
The Inflation 2025 event held Dec 2 - 5 in Paris released slides today for the event (slides for 48 talks).
timetable with slides: indico.iap.fr/event/36/timet…
They're also now added to the cosmology researcher talks slides database at jrdmb.netlify.app/crsl.html
Thomas Colas retweeted
Join us for the next UK-COSMO meeting at Imperial: indico.global/event/15684/. @ukcosmo
Thomas Colas retweeted
The 2025 Nobel Prize in Physics goes to John Clarke, Michel Devoret, and John Martinis —
“for the discovery of macroscopic quantum mechanical tunnelling and energy quantisation in an electric circuit.”
Here's what I understand of their work (experts feel free to chime in) 🧵
Thomas Colas retweeted
Tired of black holes decohering your superpositions? Masses entangled with soft gravitons? Recover (a little) coherence today, in one (carefully controlled) step—*even after you’ve finished your superposition experiment!* With Jonah, @8piGSatish, Bob Wald: arxiv.org/abs/2501.04773
Thomas Colas retweeted
[Les Houches 2025]
Summer school: Les Houches on Dark Universe
(July 7, 2025 to August 1, 2025)
Registration is open
Deadline Mar 1, 2025
Program: indico.iap.fr/event/25/page/…
indico.iap.fr/event/25/overv…
Thomas Colas retweeted
Attention HEP-ph people:
I maintain a list of summer schools for students in hep-ph on my website docs.google.com/spreadsheets…)
If you know of any I have missed, please let me know. This is particularly useful for people outside of the big US and EU hubs, where word-of-mouth fails
Thomas Colas retweeted
Small🧵on the Big Bang. Sometimes colleagues take the word "initial singularity" serious, but extrapolating classical relativity to energy densities above which we know classical physics to be valid is pointless. Like the divergence in the electric field for a point particle.
For those interested in the question of whether or not there was an initial singularity, have a look at a conversation I had with @bgreene at the World Science Festival last June. It's a deep question.
youtu.be/_DMbOtpRSk0?feature…
Thomas Colas retweeted
Join us for our first #UNIVERSEPlus seminar of 2025!
Wednesday, January 8, 4:00 PM(CET)
Fabian Schmidt (@maxplanckpress Astrophysics) will deliver a talk on "Wilson-Polchinski renormalization group for large-scale structure"
s.gwdg.de/2M0Bmp
#Physics #Astrophysics
Thomas Colas retweeted
Teaching in Cargese this summer (somebody has to do it 😉): indico.desy.de/event/43837/
Thomas Colas retweeted
David Tong provides his beautiful, insightful, original lectures on physics free of charge. His latest gift to us is on mathematical biology. damtp.cam.ac.uk/user/tong/ma…
Thomas Colas retweeted
Registration for *Early Universe from Home 2025* is now open! (running 25-28 Feb)
It will be the best place to learn about and discuss...
- correlators
- phase transitions
- topological defects
- primordial black holes
- and other early structures.
earlyuniverse.cosmodiscussio…
Thomas Colas retweeted
We are delighted to announce that registration for *Early Universe from Home 2025* is now open ! Please share with colleagues and collaborators
Registration for *Early Universe from Home 2025* is now open! (running 25-28 Feb)
It will be the best place to learn about and discuss...
- correlators
- phase transitions
- topological defects
- primordial black holes
- and other early structures.
earlyuniverse.cosmodiscussio…
Thomas Colas retweeted
Dec 19 - Renormalizing Bias Parameters
arxiv.org/abs/astro-ph/06094…
arxiv.org/pdf/0902.0991
McDonald (+ Roy) show the statistical treatment of tracers of DM (such as galaxies) requires renormalization of the bias parameters. They anticipates/discovers the EFT structure found later.
