Telegram Group Search
3-year #PostDoc position centered on the extraction and analysis of relations of societal actors (e.g. politicians, CEOs, ...) from unstructured text data. Feel free to reach out if you want to know more! Deadline: Jan 1st.

https://jobs.uni-graz.at/en/jobs/a122f6d8-06bf-e5a2-6fba-67612e91fb27
Roadmap on machine learning glassy dynamics

Unravelling the connections between microscopic structure, emergent physical properties and slow dynamics has long been a challenge when studying the glass transition. The absence of clear visible structural order in amorphous configurations complicates the identification of the key physical mechanisms underpinning slow dynamics. The difficulty in sampling equilibrated configurations at low temperatures hampers thorough numerical and theoretical investigations. We explore the potential of machine learning (ML) techniques to face these challenges, building on the algorithms that have revolutionized computer vision and image recognition. We present both successful ML applications and open problems for the future, such as transferability and interpretability of ML approaches. To foster a collaborative community effort, we also highlight the ‘GlassBench’ dataset, which provides simulation data and benchmarks for both 2D and 3D glass formers. We compare the performance of emerging ML methodologies, in line with benchmarking practices in image and text recognition. Our goal is to provide guidelines for the development of ML techniques in systems displaying slow dynamics and inspire new directions to improve our theoretical understanding of glassy liquids.

https://www.nature.com/articles/s42254-024-00791-4
Audio
Garbage in Garbage out: Impacts of data quality on criminal network intervention

https://arxiv.org/abs/2501.01508
Network theory and Bach's music

When you listen to music, does your ability to remember or anticipate the piece tell you anything about its structure? Physicists at the University of Pennsylvania developed a model based on network theory to do just that, describing their work in a February paper published in the journal Physical Review Research. Johann Sebastian Bach's works were an ideal choice given the highly mathematical structure, plus the composer was so prolific, across so many very different kinds of musical compositions—preludes, fugues, chorales, toccatas, concertos, suites, and cantatas—as to allow for useful comparisons.

https://physics.aps.org/articles/v17/21

https://journals.aps.org/prresearch/abstract/10.1103/PhysRevResearch.6.013136
The Unexpected Connection Between Brewing Coffee and Understanding Turbulence

Unconventional use of statistical mechanics sheds light on how turbulence occurs

https://today.ucsd.edu/story/coffee-and-turbulence
Fractal scaling of trees in art

Leonardo da Vinci famously invented a so-called "rule of trees" as a guide to realistically depicting trees in artistic representations according to their geometric proportions. In essence, if you took all the branches of a given tree, folded them up and compressed them into something resembling a trunk, that trunk would have the same thickness from top to bottom. That rule in turn implies a fractal branching pattern, with a scaling exponent of about 2 describing the proportions between the diameters of nearby boughs and the number of boughs with a given diameter.

https://arxiv.org/abs/2402.13520
Teaching Assistant Professor in Social Data Science, University of Copenhagen

The Teaching Assistant Professor is expected to devote 70 percent of their time to teaching, course coordination and supervision, 10 percent to administration, and 20 percent to professional development, data management, and teaching/research synergies.

https://jobportal.ku.dk/videnskabelige-stillinger/?show=163227
Controlling the low-temperature Ising model using spatiotemporal Markov decision theory

https://arxiv.org/abs/2501.03668

We introduce the spatiotemporal Markov decision process (STMDP), a special type of Markov decision process that models sequential decision-making problems which are not only characterized by temporal, but also by spatial interaction structures. To illustrate the framework, we construct an STMDP inspired by the low-temperature two-dimensional Ising model on a finite, square lattice, evolving according to the Metropolis dynamics. We consider the situation in which an external decision maker aims to drive the system towards the all-plus configuration by flipping spins at specified moments in time. In order to analyze this problem, we construct an auxiliary MDP by means of a reduction of the configuration space to the local minima of the Hamiltonian. Leveraging the convenient form of this auxiliary MDP, we uncover the structure of the optimal policy by solving the Bellman equations in a recursive manner. Finally, we conduct a numerical study on the performance of the optimal policy obtained from the auxiliary MDP in the original Ising STMDP.
Are you an international bachelor student considering doing your Physics MSc in Copenhagen?

The deadline for applying to the MSc programmes at Københavns Universitet - University of Copenhagen is January 15th if you are a non-EU student and March 1st if you are from the EU.

The Physics M.Sc. is fully in English, and we usually have about 50/50 Danish/international students. There are lots of opportunities for specializing, designing your own programme and for working closely with the reseachers!

The specializations are:
👉 Astrophysics
👉 Biophysics
👉 Computational Physics
👉 Earth and Climate Physics
👉 Physics of Complex Systems
👉 Quantum Physics

read more: https://lnkd.in/dyqjqGt3
HIIT Research Fellow and #postdoc Fellow Positions in ICT

The Helsinki Institute for Information Technology (HIIT) invites applications for Postdoctoral Fellows and Research Fellows. HIIT offers a HIIT Postdoctoral Fellow position up to three years. For more senior candidates, HIIT offers a HIIT Research Fellow position up to five years. The length of the contract as well as the starting and ending dates are negotiable.

All excellent researchers in any area of ICT can be considered, but priority is given to candidates who support one (or more) of the HIIT strategic focus areas:

Artificial Intelligence
Computational Health
Cybersecurity
Data Science
Foundations of Computing

We do not limit our research to our focus areas. If you believe that your research lies outside of our focus areas, not listed in the supervisor group above, or if you are uncertain which focus area you belong, please select the “Other” option in our eRecruitment system. Our reviewers will look through your application to determine which area or supervisor suits your research interests best.

https://www.hiit.fi/hiit-postdoctoral-and-research-fellow-positions/
2501.05394v1.pdf
319.4 KB
The Ising model: Highlights and perspectives

Christof Kuelske

We give a short non-technical introduction to the Ising model, and review some successes as well as challenges which have emerged from its study in probability and mathematical physics. This includes the infinite-volume theory of phase transitions, and ideas like scaling, renormalization group, universality, SLE, and random symmetry breaking in disordered systems and networks. This note is based on a talk given on 15 August 2024, as part of the Ising lecture during the 11th Bernoulli-IMS world congress, Bochum.
2025/01/22 09:30:58
Back to Top
HTML Embed Code: