The quadratic unconstrained binary optimization (QUBO) problem arises in diverse optimization applications ranging from Ising spin problems to classical problems in graph theory and binary discrete op...

In [A. Jackson, Explaining the ubiquity of phase transitions in decision problems (2025), arXiv:2501.14569], I established that phase transitions are always present in a large subset of decision probl...

Sep 28, 2008 · What are common problems for the CUMMINS NHC-250 engine? I am going to pick up a M818 & XM818 soon, and it would greatly help me if I knew what problems I could face on the way …

Inverse problems are ubiquitous in nature, arising in almost all areas of science and engineering ranging from geophysics and climate science to astrophysics and biomechanics. One of the central chall...

We present some open problems in the field of exactly solvable models. Two of the problems are related to the correlation functions of the XXX spin chain and the XXZ spin chain, one to the entropy of ...

The present issue of the series represents the Proceedings of the Students Training Contest Olympiad in Mathematical and Theoretical Physics and includes the statements and the solutions of the probl...

Deconvolution problems arise in a variety of situations in statistics. An interesting problem is to estimate the density $f$ of a random variable $X$ based on $n$ i.i.d. observations from $Y = X + \va...

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Sep 23, 2024 · 10 early-career scientists tackling some of the biggest problems of today In its ninth year, SN 10: Scientists to Watch is Science News ’ list of up-and-coming researchers

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