#statistical-mechanics — Public Fediverse posts

Why 137? A hydrogen atom spans 137 Compton wavelengths -- one electron orbit contains 18,800 Compton "ticks." Are these brute facts or signatures of a cosmic Central Limit Theorem converting quantum noise into classical atoms? The cosmological constant is an even stronger candidate: 10^122 horizon pixels produce the observed dark energy. Honest about gaps. https://doi.org/10.5281/zenodo.20182909

#Physics #Math #QuantumMechanics #FineStructureConstant #StatisticalMechanics #Science #Research

Sandomirskiy, F., Tamuz, O. On the origin of the Boltzmann distribution. Math. Ann. 392, 5617–5638 (2025). https://doi.org/10.1007/s00208-025-03263-x

https://arxiv.org/abs/2307.11372

The family of Boltzmann distributions is used in statistical mechanics to describe the distribution of states in systems with a given temperature. We give a novel characterization of this family as the unique one satisfying independence for uncoupled systems. The theorem boils down to a statement about endomorphisms of the convolution semi-group of finitely supported probability measures on the natural numbers, or, alternatively, about endomorphisms of the multiplicative semi-group of polynomials with non-negative coefficients.

https://phys.org/news/2026-02-crazy-dice-proof-fundamental-law.html

#mathematics #statisticalMechanics

A story from Korawich Kavee on Medium
“whether watching John Doe drive to work justifies the massive computational overhead.“

Read “But What’s Wrong with Agent-Based Simulation?“ by Korawich Kavee on Medium: https://korawichmawinkavee.medium.com/but-whats-wrong-with-agent-based-simulation-a93d637bd38c
#simulation #cityplanning #UrbanPlanning #statisticalmechanics #AgentBasedModels #citiesskylines

Derik Kauffman's avant-garde masterpiece explores the riveting concept of "negative temperature" for those #insomniacs looking for a cure. 🤔🔥 Sampling #LLaMA at T0.001T0.001T0.001? Brace yourselves for the groundbreaking revelation: it's weird. Who knew statistical mechanics could be so... cutting-edge? 🥱📉
https://cavendishlabs.org/blog/negative-temperature/ #avantgarde #negativeTemperature #statisticalMechanics #revelation #HackerNews #ngated

#physics #physik #thermodynamics #statisticalmechanics

#StatisticalMechanics - not even once!

https://www.instagram.com/p/DNpAl2Qy17Q/?igsh=MTdtaTllaG1maDl4NA==

#danger #science_memes

This week, let’s spotlight an excellent foundational Nordita lecture series by Dr. Ivan Khaymovich, available in #OpenAccess on Enabla. This advanced Master-level course offers a modern introduction to the principles of thermalization, ergodicity, and their breakdown in both classical and quantum systems. It's a timely and valuable resource for students and researchers working on nonequilibrium dynamics, chaos, information thermodynamics, and localization phenomena.

💡 Even better: Ivan is on Enabla and happy to help clarify any questions you may have about the lectures. Don’t miss this unique opportunity to deepen your understanding of one of the most active frontiers in theoretical physics; watch and discuss the course with its author and others at https://enabla.com/set/182

📘 Key topics include:

🔹 Classical systems:
• Nonequilibrium and stochastic thermodynamics
• Jarzynski equality and Crooks relation
• Entropy production and the arrow of time
• Thermodynamics on trajectories and Maxwell's Demon
• Feedback and mutual information in thermodynamics
• Classical chaos and ergodicity

🔹 Quantum systems:
• Quantum chaos and thermalization
• Ergodicity measures and the Eigenstate Thermalization Hypothesis (ETH)
• Random-matrix theory and eigenlevel statistics
• Anderson and many-body localization (MBL)
• Multifractality and ergodicity breaking beyond MBL

#Ergodicity #Thermodynamics #QuantumChaos #Thermalization #StatisticalMechanics #ManyBodyPhysics #InformationThermodynamics

#PhysicsJournalClub
"Temperature as joules per bit"
by C.A. Bédard, S. Berthelette, X. Coiteux-Roy, and S. Wolf

Am. J. Phys. 93, 390 (2025)
https://doi.org/10.1119/5.0198820

Entropy is an important but largely misunderstood quantity. A lot of this confusion arise from its original formulation within the framework of Thermodynamics. Looking at it from a microscopic point of view (i.e. approaching it as a Statistical Mechanics problem) makes it a lot more digestible, but its ties to Thermodynamics still creates a lot of unnecessary complications.
In this paper the authors suggest that by removing the forced connection between entropy and the Kelvin temperature scale, one can rethink entropy purely in terms of information capacity of a Physical system, which takes away a lot of the difficulties usually plaguing the understanding of what entropy is actually about.
I don't think the SI will ever consider their suggestion to remove Kelvins as a fundamental unit and include bits, but this paper will be a great boon to any student banging their head against the idea of entropy for the first (or second, or third) time.

#Physics #Entropy #Thermodynamics #StatisticalMechanics

Explore the intersection of data mining and many-body physics with Dr. Marcello Dalmonte from the Abdus Salam International Centre for Theoretical Physics (ICTP) and his first lecture of the 7-part series 'Data Mining the Many-body Problem.' Marcello is eager to answer your questions on Enabla, so don’t miss the chance to deepen your understanding through direct interaction!

🔗 Watch here: https://enabla.com/pub/702/about

Abstract: In this lecture, we focus on the intersection of data mining and the many-body problem, within the framework of statistical mechanics. We outline our motivations for leveraging advances in computational techniques to analyze large datasets generated by complex physical systems. We discuss concepts of universality across diverse fields and how they can inform our understanding of data structures. By exploring lattice models such as the two-dimensional Ising one, we aim to uncover universal behaviors that bridge physics and data science through innovative methodologies like unsupervised learning. This course seeks to equip participants with tools that highlight shared characteristics among seemingly disparate phenomena and are interested in understanding the many-body problem in terms of high-dimensional geometry concepts.

#DataScience #ManyBodyPhysics #StatisticalMechanics #Universality #OpenAccess

8-AUG-2024
Are #birds flying atoms?
Physical and biological systems are different. But are they? A new study on JSTAT observes that similarities might be greater than we think

https://www.eurekalert.org/news-releases/1053550 #science #CollectiveBehaviour #statisticalMechanics

#DeanRickles - Is #Time #Fundamental?

https://www.youtube.com/watch?v=1TkPn-QNYtk

#Philosophy #PhilosophyOfTime #Logic #Metaphysics #PhilosophyOfScience #Science #Emergence #Physics #Entropy #StatisticalMechanics #GR #GeneralRelativity #SpecialRelativity #Newton #Einstein #QM #QuantumMechanics #QuantumTheory #FieldTheory #Space #SpaceTime #QuantumFieldTheory #CloserToTruth #RobertKuhn

Social dynamics are more than just interactions; they're a field of physics! Statistical mechanics provides insights into patterns of human behavior, from crowd movement to opinion trends. 🧑‍🤝‍🧑🔬 #SocialPhysics #StatisticalMechanics https://www.youtube.com/watch?v=HMBl0ttu-Ow

@SmudgeTheInsultCat

And yes, that is the opening paragraph of David Goodstein's "States of Matter".

https://www.snopes.com/fact-check/science-textbook-gloomy-intro/

https://aapt.scitation.org/doi/10.1119/1.5116583

#Physics #Thermodynamics #StatisticalMechanics #LifeTheUniverseAndEverything

We thank Prof Elliott Lieb for taking a long journey from @princeton Princeton
University and giving us an insight into his research work. 🔎 He is a living example of that the age is only a number and you can still accomplish a lot at the age of 91. 🎉
Watch his lecture on YouTube 🔜 www.youtube.com/@ESIVienna

#MathematicalPhysics #Bosegas #condensedmatter #statisticalmechanics #statmech #functionalanalysis

@univienna

Watch the lectures of Sara Bonella, Ignacio Pagonabarraga and Georg Kaser now, if you missed them 👀
https://youtube.com/@ESIVienna/videos

#GlobalWarming #GlacierMelt #GreenhouseGas #GasEmissions #ClimateChange
#StatMech #statisticalmechanics #SoftMatter #softmatterphysics
@univienna @uniinnsbruck

Today, Sara Bonella's and Ignacio Pagonabarraga's lectures will take place at @ESIVienna. 🧐
We hope you're coming in person, but if you're unable to attend, you can catch up on our Youtube Channel ⏯️ https://youtube.com/@ESIVienna/playlists

#StatMech #statisticalmechanics #SoftMatter #softmatterphysics
@univienna

The audience of the #SchrödingerLectures is a more wider range of mathematicians and physicists. 👨‍🔬 👩‍🔬 These kind of lectures are meant to inform non-specialists and students about the latest developments and results in a field of #maths or #physics.

Many #SchrödingerLectures are coming in March 2023, look at these ones for example! 🥳
Save the date and join! 😉 🔖

#StatMech #statisticalmechanics #SoftMatter #softmatterphysics
@univienna

On February 20, 1844, Austrian physicist and philosopher Ludwig Boltzmann was born. His greatest achievement was in the development of statistical mechanics, which explains and predicts how the properties of atoms determine the physical properties of matter.

http://scihi.org/ludwig-boltzmann-statistical-mechanics/

#physics #philosophy #statisticalmechanics #historyofscience

A #zettelkasten or commonplace provides a catalytic surface to which ideas in the “solution of life” can more easily adhere to speed their reaction with ideas you’ve already seen and collected. Once combined via linking, further thinking and writing, they can be released as novel ideas for everyone to use.  

#catalysts #combinatorial-creativity #commonplace-books #statistical-mechanics #zettelkasten

https://boffosocko.com/2023/02/01/statistical-mechanics-of-ideas-and-note-taking/

#SeanCarroll - The #Physics of #Entropy and the #OriginOfLife

https://www.youtube.com/watch?v=Sz1n0RHwLqA&ab_channel=BigThink

#Science #Philosophy #PhilosophyOfScience #PhilosophyOfPhysics #Order #Disorder #Microstates #Macrostates #LudwigBoltzmann #Thermodynamics #SecondLaw #SecondLawOfThermodynamics #2ndLaw #2ndLawOfThermodynamics #Boltzmann #Statistics #StatisticalMechanics #ThermalEquilibrium #HeatDeath #Complexity #Simplicity

#BarryLoewer - What is #Causation ?

https://www.youtube.com/watch?v=j04awLTzaqI&ab_channel=CloserToTruth

#Philosophy #PhilosophyOfScience #Hume #DavidHume #Physics #LawsOfPhysics #LawsOfNature #Regularities #PatternsOfRegularities #Statistics #StatisticalMechanics #Probability #Probabilities #Mentaculus #TheMentaculus #MentaculusVision #TheMentaculusVision #CloserToTruth #RobertKuhn

Well, even I am not THAT depressed.

#Boltzmann #StatisticalMechanics #Thermodynamics #book

#Introduction
Hello everyone! I'm a physicist based in Spain, currently a #masterstudent on Physics of Complex System at IFISC (UIB-CSIC) in Mallorca, Spain. My interests include:

#complexity #complexsystems
#statisticalmechanics
#quantumcomputing
#datascience
#networktheory
#programming ( #python )
#linux #opensource
among many others related branches.

My goal in this page is to share recent news on these fields of study and debate with everyone who is open to do so!

#Introduction

I’m a #Physicist working in a #Chemistry department, mostly #CompChem. I try and understand functional materials (particularly #semiconductor s) with #QuantumMechanics and #StatisticalMechanics, with a sprinkling of #MachineLearning. I particularly like #PathIntegral approaches. All my work is orientated towards #RenewableEnergy materials.

My favourite programming languages are #C and #JuliaLang. #Unix #CommandLine #HackThePlanet

#AcademicParent to a ~2 and ~4 year old.

Spheres in a Space with Trillions of Dimensions

https://elkement.art/2017/06/17/spheres-in-a-space-with-trillions-of-dimensions/