mathstodon.xyz is one of the many independent Mastodon servers you can use to participate in the fediverse.
A Mastodon instance for maths people. We have LaTeX rendering in the web interface!

Server stats:

2.7K
active users

#statisticalphysics

1 post1 participant0 posts today

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.

What Is Entropy? A Measure of Just How Little We Really Know
quantamagazine.org/what-is-ent

* 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

Quanta Magazine · What Is Entropy? A Measure of Just How Little We Really Know.By Zack Savitsky

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

bioRxiv · Random walks with spatial and temporal resets may underlie searching movements in antsMany ant species are central place foragers, living in a nest and exploiting the surrounding environment. It is however unclear how their exploration behaviour relates to the emerging exploited area. Ants provide a great opportunity to study the emergence of foraging range from individual movements, given the potentially large number of scouting workers involved. Here, we introduce a random walk model with stochastic resetting to depict the movements of searching ants. Stochastic resetting refers to spatially reset at random times the position of agents to a given location, here the nest of searching ants. We investigate the effect of a range of resetting mechanisms by changing how the probability of returning to the nest depends on the duration of unsuccessful foraging trips. We compare the macroscopic predictions of our model to laboratory and field data. We find that the probability for searching ants to return to their nest decreases as the number of foraging trips increases, resulting in scouts going further away from the nest as the number of foraging trips increases. Our findings highlight the importance of resetting random walk models to depict the movements of central place foragers and nurtures novel questions regarding the searching behaviour of ants. ### Competing Interest Statement The authors have declared no competing interest.

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.

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

usyd.wd3.myworkdayjobs.comLecturer/Senior Lecturer in Physics of Complex SystemsFull time, continuing position. Located on the Camperdown Campus Exciting opportunity to join the Complex Systems Group in the School of Physics Base Salary, Level B/C $118,390- $167,221 p.a + 17% superannuation About the opportunity The School of Physics is seeking to appoint a Senior Lecturer or Lecturer in Complex Systems. This is a continuing 40% (teaching), 40% (research) and 20% (service) position. Complex Systems is a research strength of the School, having been a node of four Commonwealth-funded research centers and two University centers in the last decade, with strong cross-Faculty, national, and international links. We seek an appointee with strong theoretical, mathematical, and computational ability with a track record of applications to modeling and analyzing complex physical systems. It is anticipated that the appointee will grow their research program while contributing to the School’s undergraduate and postgraduate teaching and training in Physics, including especially its interdisciplinary links. We are seeking to recruit a mid-career academic to both strengthen and complement existing research strengths of the group, while expanding into new areas as appropriate. Areas of expertise that would be desirable include: statistical mechanics of complex systems critical phenomena field theory large-scale simulations networks. Application areas of particular interest would include: neurophysics and brain dynamics econophysics/sociophysics diagnostics and imaging of complex systems physics of deep learning biological physics. Your key responsibilities will be to: contribute to outstanding teaching and learning in Physics, including interdisciplinary aspects develop a competitively funded program of original research, either independently or as part of a team develop external research partnerships and engagement contribute to and help shape the strategic goals of School and Faculty contribute to engagement and service/administrative activities of the School of Physics and Faculty of Science. If you would like to find out more about the School of Physics leading research, click here About you The University values courage and creativity; openness and engagement; inclusion and diversity; and respect and integrity. As such, we see the importance of recruiting talent aligned to these values and are looking for a Senior Lecturer or Lecturer who has: a PhD or other research doctorate in a relevant field strong theoretical and mathematical abilities, focusing on areas relating to physical systems strong computational research ability and experience in relevant programming experience in university-level teaching, including lecturing level C: demonstrated experience and success in curriculum design and delivery; a track record of innovative pedagogy is desirable demonstrated progress toward your own independent research program evidenced by original, high-quality, research, as evidenced by refereed publications in particular; a track record of external funding success is an advantage, especially at Level C. demonstrated capacity to communicate effectively across a range of forums and to work collegially, collaboratively, and inclusively with fellow scholars and professional staff a developing network of relationships with key academic and professional institutions, and partners, including industry where appropriate evidence of developing capacity to contribute to governance, administration, and leadership in the higher education sector. To keep our community safe, please be aware of our COVID safety precautions which form our conditions of entry for all staff, students and visitors coming to campus. Pre-employment checks Your employment is conditional upon the completion of all role required pre-employment or background checks in terms satisfactory to the University. Similarly, your ongoing employment is conditional upon the satisfactory maintenance of all relevant clearances and background check requirements. If you do not meet these conditions, the University may take any necessary step, including the termination of your employment. EEO statement At the University of Sydney, our shared values include diversity and inclusion and we strive to be a place where everyone can thrive. We are committed to creating a University community which reflects the wider community that we serve. We deliver on this commitment through our people and culture programs, as well as key strategies to increase participation and support the careers of Aboriginal and Torres Strait Islander People, women, people living with a disability, people from culturally and linguistically diverse backgrounds, and those who identify as LGBTIQ. We welcome applications from candidates from all backgrounds, regardless of race or national origin. How to apply Applications (including a CV, cover letter outlining how you meet the criteria for the position and a 2 page research proposal outlining your future research directions) can be submitted via the Apply button at the top of the page. If you are a current employee of the University or a contingent worker with access to Workday, please login into your Workday account and navigate to the Career icon on your Dashboard. Click on USYD Find Jobs and apply. For a confidential discussion about the role, or if you require reasonable adjustment or support filling out this application, please contact Simon Drew Recruitment Operations, by email to recruitment.sea@sydney.edu.au © The University of Sydney The University reserves the right not to proceed with any appointment. Click to view the Position Description for this role. Applications Close Tuesday 26 September 2023 11:59 PM Our team is expanding, and we want to hire the most talented people we can. Continued success depends on it! So once you've had a chance to explore our current open positions, apply to the ones you feel suit you best and keep track of both your progress in the selection process, and new postings that might interest you! The University values courage and creativity; openness and engagement; inclusion and diversity; and respect and integrity. The University of Sydney is committed to diversity and social inclusion. Applications from people of culturally and linguistically diverse backgrounds; equity target groups including women, people with disabilities, people who identify as LGBTIQ; and people of Aboriginal and Torres Strait Islander descent, are encouraged. The University reserves the right not to proceed with any appointment. The University of Sydney may conduct routine pre-employment checks before an appointment is made. Want to know more about working at the University of Sydney? https://www.sydney.edu.au/about-us.html

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 and 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.

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

#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