### About

### Quantum Theory, Groups and Representations

### Not Even Wrong: The Book

### Recently Modified Posts

### Recent Comments

- The Man Who Solved the Market 8

Peter Woit, Anonymous, Peter Woit, Paul Blann, Peter Woit, Keith McClary [...] - Various Links 20

Arnold Neumaier, Peter Shor, David Gerard, Arnold Neumaier, Will Sawin, Narad [...] - Today's Hype 13

Thomas Larsson, Bernhard, Matthew Foster, DRLunsford, Peter Woit, Will Kinney [...] - Foundations 6

A.J., Zoviyer, Arnold Neumaier, Christoph, Peter Woit, Heiko242 - John Tate 1925-2019 1

Michael Weiss

- The Man Who Solved the Market 8
### Categories

- Book Reviews (108)
- BRST (12)
- Experimental HEP News (150)
- Fake Physics (6)
- Favorite Old Posts (48)
- Film Reviews (15)
- Langlands (36)
- Multiverse Mania (153)
- Not Even Wrong: The Book (27)
- Obituaries (26)
- Quantum Mechanics (17)
- Quantum Theory: The Book (6)
- Strings 2XXX (19)
- Swampland (16)
- This Week's Hype (112)
- Uncategorized (1,179)

### Archives

### Links

### Mathematics Weblogs

- Alex Youcis
- Alexandre Borovik
- Anton Hilado
- Cathy O'Neil
- Daniel Litt
- Danny Calegari
- David Hansen
- David Mumford
- David Roberts
- Emmanuel Kowalski
- Harald Helfgott
- Jesse Johnson
- Johan deJong
- Lieven Le Bruyn
- Mathematics Without Apologies
- Michael Hutchings
- Noncommutative Geometry
- Pieter Belmans
- Qiaochu Yuan
- Quomodocumque
- Secret Blogging Seminar
- Terence Tao
- The n-Category Cafe
- Timothy Gowers

### Physics Weblogs

- Alexey Petrov
- AMVA4NewPhysics
- Andrew Jaffe
- Angry Physicist
- Capitalist Imperialist Pig
- Chad Orzel
- Clifford Johnson
- Cormac O’Raifeartaigh
- Doug Natelson
- EPMG Blog
- Georg von Hippel
- Gordon Watts
- Jackson Clarke
- Jacques Distler
- Jennifer Ouellette
- Jim Baggott
- Joe Conlon
- John Horgan
- Lubos Motl
- Mark Goodsell
- Mark Hanman
- Mateus Araujo
- Matt Strassler
- Matt von Hippel
- Matthew Buckley
- Norbert Bodendorfer
- Peter Orland
- Physics World
- Reimagine Physics
- Resonaances
- Robert Helling
- Ross McKenzie
- Sabine Hossenfelder
- Scott Aaronson
- Sesh Nadathur
- Shaun Hotchkiss
- Stacy McGaugh
- Tommaso Dorigo

### Some Web Pages

- Alain Connes
- Arthur Jaffe
- Barry Mazur
- Brian Conrad
- Brian Hall
- Cumrun Vafa
- Dan Freed
- Daniel Bump
- David Ben-Zvi
- David Nadler
- David Vogan
- Dennis Gaitsgory
- Eckhard Meinrenken
- Edward Frenkel
- Frank Wilczek
- Gerard ’t Hooft
- Greg Moore
- Hirosi Ooguri
- Ivan Fesenko
- Jacob Lurie
- John Baez
- José Figueroa-O'Farrill
- Klaas Landsman
- Laurent Fargues
- Laurent Lafforgue
- Nolan Wallach
- Peter Teichner
- Robert Langlands
- Vincent Lafforgue

### Twitter

### Videos

# Author Archives: woit

## The Number of the Heavens

Multiverse mania seems to have been dying down recently, with this only the third entry in that category here so far this year, after 10 in 2018, 13 in 2017, 10 in 2016, 17 in 2015, 18 in 2014, 12 … Continue reading

Posted in Book Reviews, Multiverse Mania
10 Comments

## Metaphorical Worlds Interpretation

Chad Orzel has a piece at Forbes which I like a lot, where he argues that the “Many Worlds” of the MWI interpretation should be taken metaphorically, and thus the MWI really should be the “Metaphorical Worlds Interpretation”. I urge … Continue reading

Posted in Quantum Mechanics
Comments Off on Metaphorical Worlds Interpretation

## Some background on “high energy physics”

There was a workshop last week at the Harvard CMSA, focusing on new ideas about physics rooted in topology. Talks are available on the workshop webpage, and those interested in high energy physics might be most interested in the ones … Continue reading

Posted in Uncategorized
14 Comments

## Chasing Einstein

Last night I went to a showing of Chasing Einstein, a new documentary about the search for dark matter. It’s quite well done, and if you’re near New York, Berkeley or LA, you might want to take the opportunity to … Continue reading

Posted in Film Reviews
15 Comments

## An Apology

I’m afraid I made a serious mistake in this previous posting discussing Sean Carroll’s new book. Since the book was relatively reasonable, while the jacket and promotional material that came with it were nonsense, I assumed that Carroll was just … Continue reading

Posted in Quantum Mechanics
Comments Off on An Apology

## Regarding Papers about Fundamental Theories

Discussion in the comment section of the previous blog entry led me to do a little bit of historical research this morning, and I thought I’d write up the results here. First of all, for some interesting comments from people … Continue reading

Posted in Quantum Mechanics
26 Comments

## Quantum Supremacy II

About the only thing that has transcended the bitter partisan divisions between Democrats and Republicans in the US during recent years has been quantum mechanics, with the enactment late last year of the National Quantum Initiative Act (the NQI was … Continue reading

Posted in Quantum Mechanics
26 Comments

## Some Math News

My Columbia colleague Patrick Gallagher passed away a few months ago at the age of 84. He had only recently retired, and for many years was the longest serving member of the department and an important part of its institutional … Continue reading

Posted in Langlands, Obituaries
7 Comments

## Something Deeply Hidden

Sean Carroll’s new (available in stores early September) book, Something Deeply Hidden, is a quite good introduction to issues in the understanding of quantum mechanics, unfortunately wrapped in a book cover and promotional campaign of utter nonsense. Most people won’t … Continue reading

Posted in Book Reviews, Multiverse Mania
76 Comments

## What’s the difference between Copenhagen and Everett?

I’ve just finished reading Sean Carroll’s forthcoming new book, will write something about it in the next few weeks. Reading the book and thinking about it did clarify various issues for me, and I thought it might be a good … Continue reading

Posted in Quantum Mechanics
27 Comments