Andreas Karch
@karch_andreas
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Theoretical Physicist, Professor, Weinberg Theory Group, @UTAustin
Austin, TX
Joined April 2014
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Academics say they no longer know what will be permissible on Texas campuses.
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https://t.co/CbJ45YyHgo popular write-up in less than a day? miracles of AI i guess?
quantumzeitgeist.com
Researchers demonstrate that the computational complexity of evolving portions of quantum systems grows predictably with time, exhibiting distinct behaviours depending on the size of the portion,...
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Similar results also from the Stanford team, Haah and Stanford (Prof. Stanford from Stanford, yes, this is real). https://t.co/RxN9xrwwwB
arxiv.org
For chaotic quantum dynamics modeled by random unitary circuits, we study the complexity of reduced density matrices of subsystems as a function of evolution time where the initial global state is...
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Great collaboration with Yale Fan, Nick Hunter-Jones and Shivan Mittal.
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Paper day! https://t.co/oQ7qkb6DH7 Quite happy with this one. Holography makes predictions that seem to be both surprising and generic (in that we can confirm they also happen in quantum circuits).
arxiv.org
The circuit complexity of time-evolved pure quantum states grows linearly in time for an exponentially long time. This behavior has been proven in certain models, is conjectured to hold for...
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Univ. of Texas professor was dismissed from an administrative post overseeing university academic affairs because of ideological differences. Texas is targeting professors who are more focused on pushing leftist ideologies rather than preparing students to lead our nation. We
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On my way to the IAS in Princeton for our next UQM Simons Collaboration Meeting. Pretty spectacular line-up of speakers: https://t.co/Aw4HbjGcI3
ias.edu
Workshop on Ultra-Quantum MatterOctober 20-22, 2025Program Organizers: Michael Hermele, University of Colorado BoulderNathan Seiberg, Institute for Advanced StudyAshvin Vishwanath, Harvard University
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Forgot to advertise my new paper with Merna from earlier this month: https://t.co/BoCOmnayfW Among other things we find a novel strong dissipation / weak dissipation duality.
arxiv.org
We exploit the holographic realization of a conformal theory coupled to an external bath realized via a double trace deformation and its gravity dual in terms of transparent boundary conditions in...
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BREAKING: Princeton has announced it will begin requiring standardized test scores for admissions in the 2027-28 cycle. This leaves Columbia as the only Ivy League school that doesn’t require test scores. Not surprisingly: “The decision to resume testing requirements follows a
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UT Austin’s Jason McLellan, professor of molecular biosciences in @TexasScience, has been named a MacArthur Fellow, often called the “genius grant", by @macfound! His groundbreaking research in structural biology continues to shape our understanding of how science can improve
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BREAKING NEWS The Royal Swedish Academy of Sciences has decided to award the 2025 #NobelPrize in Chemistry to Susumu Kitagawa, Richard Robson and Omar M. Yaghi “for the development of metal–organic frameworks.”
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BREAKING NEWS The Royal Swedish Academy of Sciences has decided to award the 2025 #NobelPrize in Physics to John Clarke, Michel H. Devoret and John M. Martinis “for the discovery of macroscopic quantum mechanical tunnelling and energy quantisation in an electric circuit.”
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A few more hours until Allan Macdonald can bring home the Phyiscs Nobel for the @TexasLonghorns Hopefully. Now that Arch disappoints let’s hope at least Allan delivers. It’s game day 🤘🤘🤘
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Explore this gift article from The New York Times. You can read it for free without a subscription. https://t.co/8se0vIxBd1 This sounds like a problem.....
nytimes.com
Many students don’t do the reading and don’t speak up in class, according to a report. Now, professors are trying to change a campus culture they say hurts achievement and stifles speech.
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DOE Establishes the Office of Science Advisory Committee | Department of Energy New advisory structure at DOE.
energy.gov
The Department of Energy (DOE) today announced the establishment of the Office of Science Advisory Committee (SCAC).
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BREAKING NEWS The 2025 #NobelPrize in Physiology or Medicine has been awarded to Mary E. Brunkow, Fred Ramsdell and Shimon Sakaguchi “for their discoveries concerning peripheral immune tolerance.”
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