#theoretical — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #theoretical, aggregated by home.social.
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Oxygen-centred planar orbitals in the electronic structure and spin-density-wave reconstruction of multilayer nickelates
Bednorz, J. G. & Müller, K. A. Possible high Tc s…
#NewsBeep #News #Physics #Atomic #ClassicalandContinuumPhysics #ComplexSystems #CondensedMatterPhysics #Electronicpropertiesandmaterials #general #Magneticpropertiesandmaterials #MathematicalandComputationalPhysics #Molecular #OpticalandPlasmaPhysics #Science #Theoretical #UK #UnitedKingdom
https://www.newsbeep.com/uk/598139/ -
https://www.europesays.com/ie/497530/ Oxygen-centred planar orbitals in the electronic structure and spin-density-wave reconstruction of multilayer nickelates #Atomic #ClassicalAndContinuumPhysics #ComplexSystems #CondensedMatterPhysics #Éire #ElectronicPropertiesAndMaterials #general #IE #Ireland #MagneticPropertiesAndMaterials #MathematicalAndComputationalPhysics #Molecular #OpticalAndPlasmaPhysics #Physics #Science #Theoretical
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Oxygen-centred planar orbitals in the electronic structure and spin-density-wave reconstruction of multilayer nickelates
Bednorz, J. G. & Müller, K. A. Possible high Tc super…
#NewsBeep #News #Physics #Atomic #AU #Australia #ClassicalandContinuumPhysics #ComplexSystems #CondensedMatterPhysics #Electronicpropertiesandmaterials #general #Magneticpropertiesandmaterials #MathematicalandComputationalPhysics #Molecular #OpticalandPlasmaPhysics #Science #Theoretical
https://www.newsbeep.com/au/687243/ -
Oxygen-centred planar orbitals in the electronic structure and spin-density-wave reconstruction of multilayer nickelates
Bednorz, J. G. & Müller, K. A. Possible high Tc super…
#NewsBeep #News #Physics #Atomic #AU #Australia #ClassicalandContinuumPhysics #ComplexSystems #CondensedMatterPhysics #Electronicpropertiesandmaterials #general #Magneticpropertiesandmaterials #MathematicalandComputationalPhysics #Molecular #OpticalandPlasmaPhysics #Science #Theoretical
https://www.newsbeep.com/au/687243/ -
Oxygen-centred planar orbitals in the electronic structure and spin-density-wave reconstruction of multilayer nickelates
Bednorz, J. G. & Mülle…
#NewsBeep #News #US #USA #UnitedStates #UnitedStatesOfAmerica #Physics #Atomic #ClassicalandContinuumPhysics #ComplexSystems #CondensedMatterPhysics #Electronicpropertiesandmaterials #general #Magneticpropertiesandmaterials #MathematicalandComputationalPhysics #Molecular #OpticalandPlasmaPhysics #Science #Theoretical
https://www.newsbeep.com/us/658431/ -
Oxygen-centred planar orbitals in the electronic structure and spin-density-wave reconstruction of multilayer nickelates
Bednorz, J. G. & Mülle…
#NewsBeep #News #US #USA #UnitedStates #UnitedStatesOfAmerica #Physics #Atomic #ClassicalandContinuumPhysics #ComplexSystems #CondensedMatterPhysics #Electronicpropertiesandmaterials #general #Magneticpropertiesandmaterials #MathematicalandComputationalPhysics #Molecular #OpticalandPlasmaPhysics #Science #Theoretical
https://www.newsbeep.com/us/658431/ -
Photoengineering the magnon spectrum in an insulating antiferromagnet
Němec, P., Fiebig, M., Kampf…
#NewsBeep #News #US #USA #UnitedStates #UnitedStatesOfAmerica #Physics #Atomic #ClassicalandContinuumPhysics #ComplexSystems #CondensedMatterPhysics #Electronicpropertiesandmaterials #Ferromagnetism #general #Magneticpropertiesandmaterials #Magneto-optics #MathematicalandComputationalPhysics #Molecular #OpticalandPlasmaPhysics #Science #Spintronics #Theoretical
https://www.newsbeep.com/us/584426/ -
Photoengineering the magnon spectrum in an insulating antiferromagnet
Němec, P., Fiebig, M., Kampf…
#NewsBeep #News #US #USA #UnitedStates #UnitedStatesOfAmerica #Physics #Atomic #ClassicalandContinuumPhysics #ComplexSystems #CondensedMatterPhysics #Electronicpropertiesandmaterials #Ferromagnetism #general #Magneticpropertiesandmaterials #Magneto-optics #MathematicalandComputationalPhysics #Molecular #OpticalandPlasmaPhysics #Science #Spintronics #Theoretical
https://www.newsbeep.com/us/584426/ -
Did you know that #invisibility cloaks are #real?
From the 2nd c's Cap of Hades to #Marvel 's Invisible Woman, magic that renders one #invisible is a common theme in #mythology & #scifi.
In 2006, #theoretical #physicist John Pendry figured out that light could be bent around an object so that it renders it invisible.
This led to many advancements in metamaterial science, known as 'metamaterial cloaking'.I've enjoyed this talk by Pendry: https://www.youtube.com/watch?v=VO6IrynhjKs [start: 4:43min]
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Once Again, Economic Siege; Once Again, Resistance Economy
Isla…
#Economy #a #again #And #at #becomes #behavior #But #capacity #concept #cooperation #country’s #crises #economic #economies #from #greater #in #into #IS #Islam #lies #more #moves #not #ONCE #only #overcome #Point #power #precisely #pressure #rationality #real #reality #Résistance #Resources #responsibility #shifts #siege #social #societal #the #Theoretical #this #Times #TO #toward #under #Which?
https://www.europesays.com/2947646/ -
🎉 Oh look, another article where someone writes a thesis on how they *totally* could have caught a #backdoor using their favorite niche OS—because #hindsight is 20/20 and #NixOS is the new superhero cape. 🦸♂️🔍 Meanwhile, the rest of the world continues using xz obliviously, because who needs practical #solutions when you have #theoretical ones? 🙄
https://luj.fr/blog/how-nixos-could-have-detected-xz.html #Practicality #HackerNews #HackerNews #ngated -
The review of an #esoteric tome on #continuations blunders on like an over-caffeinated grad student's fever dream 💤💻. The author can't decide if it's groundbreaking or a $100 paperweight 📚❓. Spoiler: it has no exercises - because who needs practice when you've got #theoretical #ramblings, right? 🤷♂️
https://swatson555.github.io/posts/2025-09-16-compiling-with-continuations.html #literature #HackerNews #gradstudent #HackerNews #ngated -
The review of an #esoteric tome on #continuations blunders on like an over-caffeinated grad student's fever dream 💤💻. The author can't decide if it's groundbreaking or a $100 paperweight 📚❓. Spoiler: it has no exercises - because who needs practice when you've got #theoretical #ramblings, right? 🤷♂️
https://swatson555.github.io/posts/2025-09-16-compiling-with-continuations.html #literature #HackerNews #gradstudent #HackerNews #ngated -
The review of an #esoteric tome on #continuations blunders on like an over-caffeinated grad student's fever dream 💤💻. The author can't decide if it's groundbreaking or a $100 paperweight 📚❓. Spoiler: it has no exercises - because who needs practice when you've got #theoretical #ramblings, right? 🤷♂️
https://swatson555.github.io/posts/2025-09-16-compiling-with-continuations.html #literature #HackerNews #gradstudent #HackerNews #ngated -
The review of an #esoteric tome on #continuations blunders on like an over-caffeinated grad student's fever dream 💤💻. The author can't decide if it's groundbreaking or a $100 paperweight 📚❓. Spoiler: it has no exercises - because who needs practice when you've got #theoretical #ramblings, right? 🤷♂️
https://swatson555.github.io/posts/2025-09-16-compiling-with-continuations.html #literature #HackerNews #gradstudent #HackerNews #ngated -
Entanglement accelerates quantum simulation | Nature Physics
Amico, L., Fazio, R., Osterloh, A. & Vedral, V. Entanglement in many-body systems. Rev. Mod. Phys. 80, 517–576…
#NewsBeep #News #US #USA #UnitedStates #UnitedStatesOfAmerica #Physics #Atomic #ClassicalandContinuumPhysics #ComplexSystems #CondensedMatterPhysics #general #MathematicalandComputationalPhysics #Molecular #OpticalandPlasmaPhysics #Quantuminformation #Quantumsimulation #Science #Theoretical
https://www.newsbeep.com/us/12788/ -
My #introduction keywords: #academic #evolution #cooperation #ecology
I'm a #postdoc specialising in evolutionary and ecological modelling at #NUS #Singapore currently working on #theoretical #models for the evolution of cooperation, in collaboration with Hisashi Ohtsuki, at #SOKENDAI, #Japan.
Previous work: estimating undetected #extinctions, #qualitativemodelling, migratory #phenology, #foodweb #modelling, local #adaptation, #carryover effects, #dispersal.
My blog https://nadiah.org/
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`This report offers fundamental tools and methods for experimental execution and #theoretical analysis of #ultrafast #crystallography. We emphasize the use of phase-space representation of the density matrix using the #Wigner transform to visualize the coherent motions that are seen...These methods are generally applicable, and their purpose is fully demonstrated with this example of ultrafast #structural #dynamics of a reversibly #photoswitching #fluorescent #protein`
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`This report offers fundamental tools and methods for experimental execution and #theoretical analysis of #ultrafast #crystallography. We emphasize the use of phase-space representation of the density matrix using the #Wigner transform to visualize the coherent motions that are seen...These methods are generally applicable, and their purpose is fully demonstrated with this example of ultrafast #structural #dynamics of a reversibly #photoswitching #fluorescent #protein`
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`This report offers fundamental tools and methods for experimental execution and #theoretical analysis of #ultrafast #crystallography. We emphasize the use of phase-space representation of the density matrix using the #Wigner transform to visualize the coherent motions that are seen...These methods are generally applicable, and their purpose is fully demonstrated with this example of ultrafast #structural #dynamics of a reversibly #photoswitching #fluorescent #protein`
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`This report offers fundamental tools and methods for experimental execution and #theoretical analysis of #ultrafast #crystallography. We emphasize the use of phase-space representation of the density matrix using the #Wigner transform to visualize the coherent motions that are seen...These methods are generally applicable, and their purpose is fully demonstrated with this example of ultrafast #structural #dynamics of a reversibly #photoswitching #fluorescent #protein`
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The Amazing History of #Locality in #Theoretical #Physics#Philosopher #DavidAlbert rambles (his word) for ½ hour on the often gripping (and #funny) #saga of #nonlocality in #scientific #thought. Starting with #fish, he ushers us along to #Bell's #Theorem in the 1960s. It seems we are "inescapably" in the age of nonlocality. Perhaps an age of #TimeTravelers?
🔗 https://www.youtube.com/watch?v=y_GM12xjBWY 2023 Oct 25
🔗 https://en.wikipedia.org/wiki/Bell%27s_theorem#Community #TimeTravel #Research #Newton #quantum #gravity #Kronodon
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There is a divide between #theoretical and #applied #econometrics
https://dlm-econometrics.blogspot.com/2024/06/the-great-divide.html
https://dlm-econometrics.blogspot.com/2024/06/the-great-divide-part-ii.html
"…perhaps a fair characterization is that applied work has improved over time, but it has also become much more homogeneous.
Instead, the applied toolbox ought to be growing exponentially, yet the opposite is occurring. As I said in the prior post, this is bad, bad science." -
I put this #chart together almost 10 years ago to help #nonprofit orgs think about their relationship to #data and #InformationTechnology .
I'm posting it here, because there seem to be a lot of conversations about #epistemology - ranging from the #practical to the #theoretical Perhaps this chart can be adapted to #contexts beyond the original one.
Creative Commons license 3.0 attrib-noncommercial-no derivs.
@epistemology
@nptech
#information
#knowledge
#wisdom
#insight
#analysis -
The #Physics of Time Travel
Dr Pieter Kok at the #University of #Sheffield
#Theoretical #Physicist #Kok explains #Math and #QuantumPhysics for #TimeTravelers in 5-min.📢 @KronoMoon's #Complaint:
#Quantum #Community, can we please retire all #hypotheticals involving #dead #cats & #dead #grandfathers‽ These are utterly unnecessary. Use your ample #imaginations & #rewrite! #Please!🔗 https://www.youtube.com/watch?v=uz9eLjO2BrA 2013 Feb 05
🔗 https://Wikipedia.org/wiki/Temporal_paradox -
Aton Petrov: Time Travel May Be Possible Without Major #Paradoxes
Short 12-min #video on the #cultural & #literary #history and #theoretical #physics of Time Travel. Thinking on the subject rapidly generates paradoxes of #mathematical #logic, which #Petrov says cannot exist.
🔗 https://www.youtube.com/watch?v=p2uWv02-BlA 02 May 2022
🔗 https://Wikipedia.org/wiki/Temporal_paradox#Time #Timelessness #TimeTravel #theory #manyworlds #multiverse #causality #philosophy #spacetime #KrononautMoon
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The idea of “theories of everything” may be fundamentally wrong All attempts at "unification" or "theories of everything" necessarily add new particles and new ingredients to the theory. Is this a fundamentally flawed approach? bigthink.com/starts-with-... #physics #fundamental #theoretical
The idea of "theories of every... -
#seminar alert! ⏰
Next Tuesday, Frank Hilker from the University of Osnabrück will give a talk in our Ecology Colloquium entitled
"To connect or not connect isolated patches: Total population abundance and failed rescue effects in fragmented landscapes".
Everyone welcome, either in person or via Zoom, the more the merrier! 😀
#Theoretical Ecology #YoMos
#EcologicalModelling #ecoevo #metapopulation -
All young #CS and #IT practitioners should study, in-depth, at least the following #programming paradigms and pillar languages:
Imperative:
• Mechanical—Forth
• Procedural—C
• Objective—SmalltalkDeclarative:
• Functional—ML
• Relational—SQL
• Logical—PrologTheoretic:
• Computability—𝜆-Calculus
• Polymorphic—Hindley-Milner
• Dependent—Martin-LöfThe above is only "my" short-list. Every experienced programmer has "his" short-list of favourites. Regardless, dedicating oneself to the study of one such short-list would equip a young technologist with both practical and theoretical foundations for the rest of his career—provided he does not switch into the MBA lane, upon the first opportunity.
There is a caveat, though. Each of the above subjects stands atop decades of #theoretical research and #practical advances in #computing. For example, Forth, perhaps the simplest one of the lot, could be viewed as a programmer-readable summary of computing history, from von Neumann's seminal paper (1945) at least up to ANSI Forth (1994). And Martin-Löf intuitionistic type theory (1972), arguably the most complex of the lot, was created with the aim to serve as a new foundation of mathematics, possibly reaching back to Euclid. Dependent type theory, even after more than half-a-century, is still a vibrant (HoTT, as it were) research area.
It is plain to see that "mastery" of computing is an endeavour that demands more than life-and-a-half of dedication. So, none of us are true masters thereof. Indeed, for most of us, just to become barely competent in this field requires a careerlong dedication. Hence, the admonition against switching lanes.
Oh and, #practice maybe careerlong, but #learning is lifelong.
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Great ideas in theoretical computer science
#HackerNews #Great #ideas #in #theoretical #computer #science #computer #science #theoretical #ideas #innovation #research
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Martin Hinz, Jan Kolář, and co-authors investigate current intersections between #theoretical & #computationalarchaeology & propose a #framework for maintaining these 2 domains’ “shared goal of interpreting the human past.” @jankolararchaeo.bsky.social
Read more in their recent FirstView article:
https://www.cambridge.org/core/journals/advances-in-archaeological-practice/article/current-key-intersections-between-theoretical-and-computational-archaeology/4FFD837DE91FEB90C6FCBCAD80002CAF -
Experimental and Theoretical Confirmation of Covalent Bonding in α-Pu
https://advanced.onlinelibrary.wiley.com/doi/10.1002/adfm.202501798
#HackerNews #Experimental #Theoretical #CovalentBonding #AlphaPu #ScienceResearch
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The argument against the existence of a Theory of Everything Many theoretical physicists are on a quest to find the "holy grail" of physics: a theory of everything. But perhaps we should listen when the Universe tells us, "this is NOT the way." bigthink.com/starts-with-... #physics #theoretical
The argument against the exist... -
How We’re Reaching The #Theoretical Limit of #Computer #Power : Medium
#MaunaLoa #Observatory captured the reality of #ClimateChange. The US plans to shut it down : Misc
MIT engineers print synthetic “metamaterials” that are both strong and stretchy : MIT
Check our latest #KnowledgeLinks
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Take a tour of telescopes or tokamaks
It’s never too early to plan for a regular dose of physics during your vacation. If you are…
#NewsBeep #News #Physics #Astronomyandplanetaryscience #Atomic #ClassicalandContinuumPhysics #ComplexSystems #CondensedMatterPhysics #general #MathematicalandComputationalPhysics #Molecular #OpticalandPlasmaPhysics #Science #Scientificcommunity #Theoretical #UK #UnitedKingdom
https://www.newsbeep.com/uk/12590/ -
Elastic properties of force-transmitting linkages determine multistable mechanosensitive behaviour of cell adhesion
Semi-analytical mechanical model of cell…
#NewsBeep #News #Physics #Atomic #Biologicalphysics #CA #Canada #Cellularmotility #ClassicalandContinuumPhysics #ComplexSystems #Computationalbiophysics #CondensedMatterPhysics #general #MathematicalandComputationalPhysics #Molecular #OpticalandPlasmaPhysics #Science #Single-moleculebiophysics #Theoretical
https://www.newsbeep.com/ca/8437/ -
Elastic properties of force-transmitting linkages determine multistable mechanosensitive behaviour of cell adhesion
Semi-…
#NewsBeep #News #US #USA #UnitedStates #UnitedStatesOfAmerica #Physics #Atomic #Biologicalphysics #Cellularmotility #ClassicalandContinuumPhysics #ComplexSystems #Computationalbiophysics #CondensedMatterPhysics #general #MathematicalandComputationalPhysics #Molecular #OpticalandPlasmaPhysics #Science #Single-moleculebiophysics #Theoretical
https://www.newsbeep.com/us/21578/ -
New paper from our lab is published now in Theoretical Ecology! 📰
Lilla Kiss @likiss and Toni Klauschies write on: "Consumer coexistence through the gleaner–opportunist trade-off in the light of sigmoidal functional responses"Go read it here:
https://link.springer.com/article/10.1007/s12080-025-00618-7#theoretical #ecology #modelling #functionalresponse #coexistence #TradeOff #phdchat
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New Theoretical Research Trends in Cartography
https://www.researchgate.net/publication/26467883_NEW_THEORETICAL_RESEARCH_TRENDS_IN_CARTOGRAPHY
#HackerNews #New #Theoretical #Research #Trends #in #Cartography #cartography #research #theoretical #trends #mapping #science #innovation
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How Noether’s Theorem Revolutionized Physics❛❛ Emmy #Noether showed that #fundamental #physical #laws are just a consequence of simple #symmetries. A #century later, #her insights continue to shape #physics. ❜❜
🔗 https://www.QuantaMagazine.org/how-noethers-theorem-revolutionized-physics-20250207/ 2025 Feb 07
🔗 https://Wikipedia.org/wiki/Emmy_Noether … #EmmyNoether#Community #TimeTravel #Research #theorem #theoretical #math #science #conservation #laws #woman #physicist #Kronodon
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#Zoomposium interview with Prof. Dr. #Holger #Lyre": Conscious #structures or structures for #consciousness?"
A Zoomposium interview with Prof. Dr. Holger Lyre, renowned German philosopher of #science and professor of #theoretical #philosophy at the University of Magdeburg, where he has also been a member of the Center for #Behavioral #Brain #Sciences (CBBS) since 2010.
More on: https://philosophies.de/index.php/2022/05/03/strukturen-fuer-das-bewusstsein/
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@djb (Daniel J. Bernstein) tooted about a new blog post[1] he published. It's here:
https://blog.cr.yp.to/20250118-flight.htmlIt's interesting. He's a #mathematician and software guy that in more recent years has been known mostly for his work in #cryptography, #theoretical and #practical. You're probably using his #Curve25519 every day in your #communications.
I'm not a mathematician (by a long shot), but it's written in a pretty accessible manner - it's not #formulae and #turgid academic #prose.
The central point he's getting at, by my possibly-mistaken understanding of it, is that current "common sense" about when attacks against pre-quantum cryptography like #RSA (and therefore when post-quantum cryptography becomes critical) are badly mistaken - based on bad assumptions about how attacks work, how they're implemented, and on badly #extrapolating from those bad assumptions using logic that doesn't actually represent the way attacks are developed and become practical.
TL;DR is something along the lines of "#quantum cryptographic attacks against RSA will be practical sooner than most people think, and you should be deploying quantum-resistant cryptography now, not later".
It's worth reading if you're at all interested in #crypto and #security stuff.
He also mentions a project he's involved in that has been discussed separately, transparent post-quantum tunnelling for unmodified #server and #client #software. Link in post.
[1] Written more like a conference presentation, FWIW.
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Theoretical Physicist Michael Vera is the author of 'The #Unified #Theory of #Energy'.
@michaelvera's work is available on the #web and as a #PDF.Vera has been a gentle critic of The #KrononautMoon Project. We encourage all civil discourse. One's belief in Time Travel is not a prerequisite when attempting #contact with #TimeTravelers.
🔗 https://MichaelVera.org/Unified_Theory_of_Energy.html 2020 Apr 20
🔗 https://MichaElvera.org#Community #TimeTravel #Research #theoretical #physics #energyfields #cosmology #Kronodon
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#Theoretical #physicist Sabine #Hossenfelder: "We’ve Been Searching For #Aliens All Wrong, #Researchers Say (and they have a point)"
❛❛ #Civilizations need #energy to expand. You’ve probably heard of the #Kardashev scale, which classifies civilizations based on their ability to generate and use energy (if you’re interested, #humans are barely on the scale). A new paper has shaken up that scale ❜❜ (with ad 7 min.)
🔗 https://www.youtube.com/watch?v=nQm6JC4ruEk 2024 Nov 27
🔗 https://Wikipedia.org/wiki/Sabine_Hossenfelder -
#Theoretical #physicist Fred Alan Wolf on possibilities of Time Travel:
…❛❛ I believe that the mind … the sub #SpaceTime realm out of which I believe matter comes into being — according to my understanding of #quantum #physics — that realm is a #spaceless #timeless realm which means that it's like in a sense a place where closed timelike paths can emerge ❜❜…
🔗 https://www.youtube.com/watch?v=sv1yE4n4PRY 28 Sep 2019
🔗 https://Wikipedia.org/wiki/Fred_Alan_Wolf
👒 h/t @jimdonegan -
https://www.europesays.com/uk/956179/ Higher-order harmonics in Josephson tunnel junctions due to series inductance #Atomic #CharacterizationAndAnalyticalTechniques #ClassicalAndContinuumPhysics #ComplexSystems #CondensedMatterPhysics #general #MathematicalAndComputationalPhysics #Molecular #OpticalAndPlasmaPhysics #Physics #Qubits #Science #SuperconductingPropertiesAndMaterials #Theoretical #UK #UnitedKingdom
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https://www.europesays.com/uk/955754/ Laser mode braiding on a chip #Atomic #ClassicalAndContinuumPhysics #ComplexSystems #CondensedMatterPhysics #general #MathematicalAndComputationalPhysics #Molecular #OpticalAndPlasmaPhysics #OpticalPhysics #PhotonicDevices #Physics #Science #Theoretical #UK #UnitedKingdom
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Higher-order harmonics in Josephson tunnel junctions due to series inductance
Blais, A., Huang, R.-S., Wallraff, A., Girvin, S. M. & Schoelkopf, R. J. C…
#NewsBeep #News #Physics #Atomic #AU #Australia #Characterizationandanalyticaltechniques #ClassicalandContinuumPhysics #ComplexSystems #CondensedMatterPhysics #general #MathematicalandComputationalPhysics #Molecular #OpticalandPlasmaPhysics #Qubits #Science #Superconductingpropertiesandmaterials #Theoretical
https://www.newsbeep.com/au/666699/ -
Higher-order harmonics in Josephson tunnel junctions due to series inductance
Blais, A., Huang, R.-S., Wallraff, A., Girvin, S. M. & Schoelkopf, R. J. C…
#NewsBeep #News #Physics #Atomic #AU #Australia #Characterizationandanalyticaltechniques #ClassicalandContinuumPhysics #ComplexSystems #CondensedMatterPhysics #general #MathematicalandComputationalPhysics #Molecular #OpticalandPlasmaPhysics #Qubits #Science #Superconductingpropertiesandmaterials #Theoretical
https://www.newsbeep.com/au/666699/