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Will Kinney

@wkcosmo.bsky.social

Cosmologist, physicist, dirtbag mountain biker, expat Montanan, Copernican extremist. Part of the problem.

1,329 Followers  |  635 Following  |  429 Posts  |  Joined: 16.10.2023
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Posts by Will Kinney (@wkcosmo.bsky.social)

Yeah they could work on their AI a little. 😆

26.02.2026 15:32 — 👍 2    🔁 0    💬 0    📌 0
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20% off pre-orders of my new book, Inflationary Cosmology.
www.worldscientific.com/worldscibook...

26.02.2026 13:34 — 👍 2    🔁 0    💬 1    📌 0
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Anyone who is serious about understanding the theory of inflation at a deep level should own both. I hope you enjoy.

13.02.2026 15:29 — 👍 3    🔁 0    💬 0    📌 0
https://www.worldscientific.com/worldscibooks/10.1142/14698#t=aboutBook

You can pre-order Cosmological Inflation from World Scientific at this link:

t.co/JHoTxMKsRh

13.02.2026 15:29 — 👍 1    🔁 0    💬 1    📌 0
Preview
An Infinity of Worlds In the beginning was the Big Bang: an unimaginably hot fire almost fourteen billion years ago in which the first elements were forged. The physical theory of...

An Infinity of Worlds is available now from your favorite bookseller:

mitpress.mit.edu/978026254722...

13.02.2026 15:29 — 👍 3    🔁 1    💬 1    📌 0

This is an advanced textbook, suitable for graduate students and postdocs with a basic knowledge of General Relativity and Quantum Field Theory.

13.02.2026 15:29 — 👍 1    🔁 0    💬 1    📌 0
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I cover modern topics such as eternal inflation, DBI models, ultra-slow-roll inflation and the Borde-Guth-Vilenkin Theorem, and the Trodden-Vachaspati Theorem.

13.02.2026 15:29 — 👍 1    🔁 0    💬 1    📌 0
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I discuss the state of the art in constraining theories of inflation by observation.

13.02.2026 15:29 — 👍 1    🔁 0    💬 1    📌 0
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I cover General Relativistic perturbation theory in detail, from first principles, and semiclassical quantization of fields in curved spactime, for both canonical and non-canonical field theories.

13.02.2026 15:29 — 👍 1    🔁 0    💬 1    📌 0
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Everything I discuss at a qualitative level in An Infinity of Worlds, I revisit with full mathematical rigor in Cosmological Inflation.

13.02.2026 15:29 — 👍 1    🔁 0    💬 1    📌 0

If you read my first book and found yourself wishing it had more math, here you go: where An Infinity of Worlds focuses on the structure and philosophy of the theory, Inflationary Cosmology fills in all the mathematical details.

13.02.2026 15:29 — 👍 1    🔁 0    💬 1    📌 0
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My new book Inflationary Cosmology is like Weinberg's appendix: a mathematical companion to An Infinity of Worlds.

13.02.2026 15:29 — 👍 1    🔁 0    💬 1    📌 0

Weinberg's book was unusual for a pop science book, because it included a technical appendix, which actually went into the mathematical equations governing the Big Bang.

13.02.2026 15:29 — 👍 1    🔁 0    💬 1    📌 0
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What we call the Big Bang is now understood as the END of the process of cosmic inflation, in which our universe is but one of infinitely many being continuously generated out of the quantum vacuum.

13.02.2026 15:29 — 👍 2    🔁 0    💬 1    📌 0

It was inspired by Steven Weinberg's classic, "The First Three Minutes", which was published in 1977. Our understanding of the beginning of everything has deepened immensely since then.

13.02.2026 15:29 — 👍 1    🔁 0    💬 1    📌 0
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"An Infinity of Worlds" is a popular-level book explaining the modern theory of the very first moments of the universe: Cosmic Inflation.

13.02.2026 15:29 — 👍 1    🔁 0    💬 1    📌 0
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Let me tell you a little bit about my second book, and how it relates to my first book. 1/

worldscientific.com/worldscibook...

13.02.2026 15:29 — 👍 6    🔁 4    💬 1    📌 0

Update: pre-orders are up and running. Reserve your copy now!

12.02.2026 20:14 — 👍 2    🔁 0    💬 0    📌 0
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The book has a web page! Preorders will be available soon.

www.worldscientific.com/worldscibook...

09.02.2026 15:50 — 👍 6    🔁 0    💬 0    📌 1
Post image 05.12.2025 22:28 — 👍 4    🔁 0    💬 0    📌 0
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Coming soon.

05.12.2025 22:28 — 👍 14    🔁 2    💬 1    📌 0
Preview
The battle of the Big Bang – CERN Courier Battle of the Big Bang provides an entertaining update on the collective obsessions and controlled schizophrenias in cosmology, writes Will Kinney.

Collective obsessions and controlled schizophrenias: in which I review "The Battle of the Big Bang" for CERN Courier.

cerncourier.com/a/the-battle...

09.07.2025 15:39 — 👍 14    🔁 1    💬 0    📌 0
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I just think this draft book page is aesthetically pleasing.

21.06.2025 23:25 — 👍 11    🔁 2    💬 2    📌 0
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New profile pic.

16.05.2025 19:02 — 👍 8    🔁 0    💬 0    📌 0
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Happy Mothers' Day to my mom in particular. Miss you.

11.05.2025 19:17 — 👍 7    🔁 0    💬 0    📌 0

A mathematician Pope going up against a machine god AI is the most cyberpunk thing ever.

11.05.2025 19:10 — 👍 23    🔁 3    💬 0    📌 0
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Tonight!
www.cara-nyc.org/program/even...

02.05.2025 15:52 — 👍 3    🔁 2    💬 0    📌 0
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I'll be in New York on Friday, 2 May at CARA NYC for the premier of Berlin artist Asad Raza's "Array". Looks like it will be a blast!
www.cara-nyc.org/program/even...

24.04.2025 17:20 — 👍 6    🔁 1    💬 0    📌 2
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Georgie gets some treatos 🤎

30.04.2025 22:46 — 👍 6    🔁 0    💬 2    📌 0
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Ada 🤎

24.04.2025 22:02 — 👍 8    🔁 0    💬 2    📌 0