#StatisticalPhysics

2025-04-29

Wow, awesome paper.
One does not often see the intersection of #biology, #statisticalphysics and #informationtheory .

The emergence of eukaryotes as an evolutionary algorithmic phase transition.

pnas.org/doi/10.1073/pnas.2422

2025-01-30

Magnetic whirl simulation in real time: Collaboration at #MainzUniversity enables the simulation of #skyrmion dynamics on experimentally relevant time scales 👉 press.uni-mainz.de/magnetic-wh

#TheoreticalPhysics #ExperimentalPhysics #StatisticalPhysics #skyrmions #physics

Magneto-optical microscope image of a skyrmion, which is the dark spot marked by a blue circle, in a ring of magnetic material. The spatially resolved pinning potential, which determines the special occurrence probability of the skyrmion, is shown. This is inhomogeneous due to material defects. The results from simulation and experiment as well as a high-resolution interpolation of the experimental results are shown around the microscopy image. (ill./©: Maarten A. Brems & Tobias Sparmann)
2025-01-30

Magnetic whirl simulation in real time: Collaboration at Mainz University enables the simulation of #skyrmion dynamics on experimentally relevant time scales // #TheoreticalPhysics #ExperimentalPhysics #StatisticalPhysics #skyrmions
nachrichten.idw-online.de/2025

2024-12-16

It is a pleasure to feature Dr. Valentina Ros from the Laboratory of Theoretical Physics and Statistical Models, Orsay, who explores high-dimensional random potentials, inference problems, and associated dynamics, with random matrix theory as a key analytical tool.

📚 Watch Valentina's Nordita talk and engage in discussions with peers and Dr. Ros herself on Enabla: enabla.com/pub/1169/about

This is an excellent opportunity to deepen your understanding of high-dimensional systems in statistical physics and inference problems.

#StatisticalPhysics #RandomMatrices #GlassyDynamics #SpinGlasses

"High-dimensional random landscapes and glassy dynamics" Nordita lecture by Dr. Valentina Ros on Enabla. Video, English, 3.3 hours
Victoria Stuart 🇨🇦 🏳️‍⚧️persagen
2024-12-13

How little we really know about entropy
quantamagazine.org/what-is-ent
news.ycombinator.com/item?id=4

* 200 years ago French engineer introduced idea quantifying universe’s inexorable slide into decay
* entropy is less a fact about the world than a reflection of our growing ignorance
* embracing that truth is leading to rethinking everything f. rational decision-making to the limits of machines

Everyday.Human DerekEVDHmn@ecoevo.social
2024-07-22
Valentin LechevalVLecheval@ecoevo.social
2024-02-22

New preprint out, with Richard Mann and @elva, where we take a collective behaviour look on the emergence of foraging area in ants 🐜

biorxiv.org/content/10.1101/20

#CollectiveBehaviour #animalbehavior #ants #socialinsects #modelling #statisticalphysics

2024-01-09

For 2024 I would like to increase slightly my digital presence. In the personal side, uploading more music covers/compositions to Youtube and Instagram and here maybe generating some kind of (hopefully useful) academic content.

I've been thinking about writing 1-post reviews of papers I read, so I also force myself to read more papers. I'd be interested in commenting #statisticalphysics + #complexsystems, also to see if we can create a bigger network of statphys here in Mastodon.

Gustavo Rodríguez Liñángsrdzl@mstdn.science
2023-10-27

The final version of our article published in Physica A is now available online:
authors.elsevier.com/c/1h~yQ_8
#Physics #GranularMatter #StatisticalPhysics

Snapshot of the article "Structural and dynamical behavior of a vibrated granular system of hard-cubes" published in
Physica A, 632 (2023) 129311. 
Authors: L. F. Elizondo-Aguilera, A. Carrillo Ríos, G. M. Rodríguez-Liñán, F. López Gonzalez, F. Donado, F. Pacheco Vázquez.
ABSTRACT We study experimentally and by molecular dynamics simulations a quasi-two-dimensional granular system of cubic particles, confined in a squared box and kept in a dynamic steady state  via vertical oscillations. First, we compared the dynamics of a single spherical bead and a cube. Remarkably, the trajectory of the cube shows characteristics of Brownian motion induced by the particle geometry, i.e. an erratic path generated by the collisions of the vertexes and edges of the cube with the vibrated plate; in contrast to the more predicted ballistic motion of a spherical bead. Upon the addition of more cubic particles to the system, the erratic motion is enhanced by multiple collisions, leading to a rich collective behavior. As the number of particles is increased, for instance, both the radial distribution function and the mean square displacement exhibit the qualitative features of the gas, liquid and crystalline-solid phases observed in thermally driven colloidal systems. The results obtained with experiments and simulations are in good agreement and, combined, suggest that a vibrated system of granular cubic particles provides a macroscopic ideal model of Brownian motion.
Gustavo Rodríguez Liñángsrdzl@mstdn.science
2023-10-21

We got finally published our article on granular cubic particles. Thanks to our collaborators in BUAP, Puebla and Universidad Autónoma de Hidalgo.
sciencedirect.com/science/arti
#GranularMatter #Physics #StatisticalPhysics #SoftMatter

2023-08-24

New *continuing* faculty position in the physics of complex systems at @sydney_physics @Sydney_Science. It's a great environment with great colleagues (including me!) and a very competitive salary and benefits.

Please boost! 🤓😀

#complexsystems #statisticalphysics
#complexity

usyd.wd3.myworkdayjobs.com/USY

Manlio De Domenicomanlius@mathstodon.xyz
2023-08-01

Exciting news! 🎉 My visionary project, grounded on complexity and network science to tackle climate change, has received a 1 million euro grant from the Italian Ministry for Research, under the prestigious FIS call (kind of "Italian ERC")! 🇮🇹🔬🌍

Immense gratitude to my collaborators and our outstanding research lab members for their unwavering support. Together, we're venturing into uncharted territories, unraveling the intricate connections between #ComplexSystems and #Climate impact. Ready to embark on this scientific journey and glad it's going to start at the Università degli Studi di Padova, a place where knowledge and ideas are truly free to flourish since 1222.

#StatisticalPhysics #ClimateChange #ItalianResearchExcellence #ComplexSystems #NetworkScience

PS: Stay tuned, going to hire soon senior postdocs and PhDs.

Sergio Davis :mastodon:sergdavis@lile.cl
2023-07-10

Empezando la International Conference on Statistical Physics, Chania, Creta

#statisticalphysics #physics

We look forward to new exciting collaborations & papers emerging from our ELLIS/ELISE program workshop ending in Tübingen, Germany, today - an intense exchange on #StochasticCalculus, #StatisticalPhysics & #ML with passionate European scientists that we plan to repeat next year!

Workshop overview: sites.google.com/view/scspo23/

Holly A. Gultianoaxoaxonic@synapse.cafe
2023-05-03

Nice paper connecting the Freudian "Death Drive" concept with thermodynamics, suggesting that Freud came up with it because he was influenced by the Helmholtz school frontiersin.org/articles/10.33

"It is quite remarkable, in view of Freud’s affinity for Helmholtz work, that a thermodynamic potential, the free energy, appears to be the quantity that best describes the steady state of a system driven out of equilibrium because of its strong interactions with its environment (Jarzynski, 1997; Evans and Searles, 2002; Friston, 2019). Based on these new ideas, the 'death drive' might be recast as a natural tendency of certain out-of-equilibrium systems to reach a steady-state characterized by a minimization of free energy. Indeed, there have been attempts to connect Freudian notions of free (unbound) energy to the variational free energy that figures in theoretical neurobiology and statistical mechanics (Carhart-Harris and Friston, 2010). If this is possible, it would mean that the death drive might now be cast in a way that is formally similar to the way Newtonian mechanics was recast in a 'principle of least action.' This would constitute a major advance in Freud’s 'Project for a Scientific Psychology.'"

#Psychology #Thermodynamics #StatisticalPhysics #Entropy #Freud

2023-02-21

echoes of D&D in my cousin's latest paper. #Physics #StatisticalPhysics #Science #Zombies #Clerics #DungeonsAndDragons #Fantasy #FRPG

"New disease model pits zombies against clerics for clarity"
discover.lanl.gov/news/0209-zo

2023-02-11

A newbie question on Julia:

Converted a large MC code set in Julia from C. It is a one-to-one mapping from my previous C code, except few vectorizations.

It uses only one library- Random, for rand().

The Julia code is terribly slower than the C code.

Can someone please throw some pointers on this problem?

#Julia #JuliaLanguage #programming #mathbio #computationalbiology
#dynamicalsystems
#statisticalPhysics

#SoftMatter have just published the results of a project that Renato Assante, Davide Marenduzzo, Alexander Morozov, and I recently worked on together! What did we do and what’s new? Briefly…

#Microswimmer suspensions behave in a similar way to fluids containing kinesin and microtubules. Both systems can be described by the same system of three coupled nonlinear #PDEs.

A #LinearStabilityAnalysis of these equations suggests that variations in concentration across the system don’t significantly affect emergent #phaseBehaviour. How then can we explain #experiments that show visible inhomogeneities in #microtubule#kinesin mixtures, for instance?

With increasing activity, we move away from the quiescent regime, past the onset of #SpontaneousFlow, and deeper into the active phase, where #nonlinearities become more important. What role do concentration inhomogeneities play here?

We investigated these questions, taking advantage of the #openSource #Dedalus #spectral framework to simulate the full nonlinear time evolution. This led us to predict a #novel regime of #spontaneous #microphaseSeparation into active (nematically ordered) and passive domains.

Active flow arrests macrophase separation in this regime, counteracting domain coarsening due to thermodynamic coupling between active matter concentration and #nematic order. As a result, domains reach a characteristic size that decreases with increasing activity.

This regime is one part of the #PhaseDiagram we mapped out. Along with our other findings, you can read all about it here!

low #ReynoldsNumber #turbulence #ActiveTurbulence #CahnHilliard #ActiveMatter #NavierStokes #BerisEdwards #CondensedMatter #PhaseTransitions #TheoreticalPhysics #BioPhysics #StatisticalPhysics #FluidDynamics #ComputationalPhysics #Simulation #FieldTheory #paperthread #NewPaper #science #research #ActiveGel #activeNematic #analytic #cytoskeleton #hydrodynamics #MPI #theory

Gustavo Rodríguez Liñángsrdzl@mstdn.science
2023-01-14

Roya Zandi is talking about virus #SelfAssembly. #Physics #biophysics #StatisticalPhysics

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