Leo C. Stein is @duetosymmetry on bsky/threads/🐘 @duetosymmetry
Physics Prof @ U of MS. Black holes, gravitational waves, general relativity & beyond. Formerly @Caltech @MIT @Cornell. Need thin pizza + fruity coffee. He/him duetosymmetry.com Oxford, MS Joined February 2009-
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The most tantalizing kind of event that LISA could detect—not mentioned in this article!—is an extreme mass-ratio inspiral, or EMRI, where a stellar mass object spirals into a supermassive black hole, and LISA could measure ~100,000 orbits! Would be very sensitive to new physics.
The most tantalizing kind of event that LISA could detect—not mentioned in this article!—is an extreme mass-ratio inspiral, or EMRI, where a stellar mass object spirals into a supermassive black hole, and LISA could measure ~100,000 orbits! Would be very sensitive to new physics.
The "much of GR and EM" mentioned here are just the Bianchi identities, which would be true regardless of the equations of motion. The real content of Maxwell's equations is not dF=0 (which is automatic from F=dA), but rather d*F=*J. Similarly for GR.
The "much of GR and EM" mentioned here are just the Bianchi identities, which would be true regardless of the equations of motion. The real content of Maxwell's equations is not dF=0 (which is automatic from F=dA), but rather d*F=*J. Similarly for GR.
At #MarylandDay an 8th grader came up to the ask an astronomer booth with a notebook full of questions. Questions ranging from the origins of cosmic rays to if astronomers use the theory of general relativity and quantum mechanics. She made my heart so happy 😭
Probably doesn't look like much, but that's Kingfish playing at the Double Decker Festival!
My fortune is either telling me to become an experimentalist or that I need more exercise
Potential electromagnetic counterpart to #S240422ed detected with Magellan's Clay telescope?? GCN: gcn.nasa.gov/circulars/36267 (for context, see x.com/cplberry/statu…)
Potential electromagnetic counterpart to #S240422ed detected with Magellan's Clay telescope?? GCN: gcn.nasa.gov/circulars/36267 (for context, see x.com/cplberry/statu…)
Interested in astrophysics? ICERM is now accepting applications for Solving the Boltzmann Equation for Neutrino Transport in Relativistic Astrophysics, a July Topical Workshop! Learn more and apply: icerm.brown.edu/topical_worksh…
Pro tip: unless your friends are furniture snobs, get a replica. Better yet, find a replica on Craigslist for 50% less
Pro tip: unless your friends are furniture snobs, get a replica. Better yet, find a replica on Craigslist for 50% less
Check out this 🎉 new preprint 🎉 led by Princeton PhD student Hengrui Zhu. Numerical studies of nonlinearities in black hole ringdowns are getting very precise now! Thanks, spectral methods 🤓 Imprints of Changing Mass and Spin on Black Hole Ringdown arxiv.org/abs/2404.12424
"The fine arts are lovely, but do they receive NIH grants? Have you ever seen a cellist on ESPN?" mcsweeneys.net/articles/we-ar…
Reaching out to my twitter network for folks who are former astronomers now working in data science (or who know people!). I'm looking for practicable advice :)
Looking for mathematical physics/ theoretical physics (undg) schools/courses for this summer. Any recommendations? (either online or in Mexico City).
Can a radiation gauge be horizon-locking?. arxiv.org/abs/2404.10113
With another semester ending, here's your annual reminder that teaching evaluations systemically disadvantage women. Even when controlling for grades and other factors, students (esp. males) consistently give female professors lower scores. This can have serious ramifications.🧵
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17K Followers 1K Following mathematical physicist lost in a liminal space of events to take humanity toward the singularity of knowledge. aspiring tardis engineer and time lord.
Olivia Lanes @Liv_Lanes
28K Followers 686 Following Global Lead, IBM Quantum advocacy & education| PhD @PittTweet | @DickinsonCol | “Sufficiently amusing” | Ask me about my qubit.
Michael Kinyon @ProfKinyon
17K Followers 1K Following No longer here (thanks Elon). Mathematics professor @UofDenver. Quasigroups, Semigroups, Automated Deduction. He/Him. Same username on other social media.
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modular bones ☠️ .. @RicciFlat
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1.2M Followers 2K Following We all are Citizens of the World. What's good for you, must be good for all. If you are lost, share a plate of food with a stranger...you will find who you are.
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Last year Tennessee became the first state to try and ban drag shows. Just watched the new episode of @HBO’s “We’re Here” and was honored to bring some ICONIC drag queens to the House floor to reclaim the space. Drag shows are not a threat to our kids, mass shootings are. ✊🏾🌈
@duetosymmetry That said, I'm quite happy to maintain that saying that the em field can be thought of as a connection is "physical content".
@duetosymmetry Good idea!!!
Me and my high school physics teacher at my PhD graduation
High school teachers can have much bigger impact on young people's lives than university professors. We forget that sometimes. I just received a photo of my geology teacher in high school. I never went to study geology, but this man has been a great inspiration to me.
wish me luck, I'm giving my first colloquium ever tomorrow!
Very interesting points and discussion by everyone involved in this nested thread
The "much of GR and EM" mentioned here are just the Bianchi identities, which would be true regardless of the equations of motion. The real content of Maxwell's equations is not dF=0 (which is automatic from F=dA), but rather d*F=*J. Similarly for GR.
knocking on my neighbor's door to open my pasta sauce like i'm in a stupid little movie about being a girl.
Les binaires spiralantes à rapport de masse extrême, j'adore !
The most tantalizing kind of event that LISA could detect—not mentioned in this article!—is an extreme mass-ratio inspiral, or EMRI, where a stellar mass object spirals into a supermassive black hole, and LISA could measure ~100,000 orbits! Would be very sensitive to new physics.
@duetosymmetry @MarcusErve Couldn’t you define a dual field for which that is also a Bianchi identity? I agree with you that this is mostly woo, but also recall John Wheeler spending the first lecture of grad EM on ‘boundary of a boundary is zero’ being a deep insight somehow. Have wondered ever since.
@Singularitarian @BenWibking @duetosymmetry This book and “Gauge Fields Knots and Gravity” are great (the second isn’t scary like it sounds!) also Nic Fords blog article on EM as a gauge theory is excellent - probably my first recommendation to get started! nicf.net/articles/class…
@Saraht0n1n I wrote an article about this! thebeliever.net/the-last-great…
even at a dinner with 3 other people working on QG at some point we just looked around and were like damn, this sounds like an insanely high conversation
it’s difficult to talk about quantum foundations without sounding super stoned
felt edgy, might delete later
Among real numbers which fail to give convergence to Khinchin's and Levy's constants are those related to various kinds of prime numbers: Marek Wolf, arxiv.org/abs/1003.4015 (thanks @duetosymmetry for this)
28.IV The Theorem of the Day #TOTD @theoremoftheday is Khinchin’s Continued Fraction Theorem: theoremoftheday.org/NumberTheory/K…
Coal-fired power plants would be forced to capture smokestack emissions or shut down under a rule issued Thursday by the Environmental Protection Agency. to.pbs.org/3UhngdT
Some good news.
Coal-fired power plants would be forced to capture smokestack emissions or shut down under a rule issued Thursday by the Environmental Protection Agency. to.pbs.org/3UhngdT
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