More Like this

1. Theory, observations, and simulations of kinetic entropy in a magnetotail electron diffusion region

   https://doi.org/10.1063/5.0073248  

   Argall, M. R. ; Barbhuiya, M. H. ; Cassak, P. A. ; Wang, S. ; Shuster, J. ; Liang, H. ; Gershman, D. J. ; Torbert, R. B. ; Burch, J. L. ( February 2022 , Physics of Plasmas)
2. Entropy Regularized Optimal Transport Independence Criterion

   Lang Liu, Soumik Pal ( March 2022 , Proceedings of the 25th International Conference on Artificial Intelligence and Statistics (AISTATS) 2022,)
3. Particle Acceleration in Strong Turbulence in the Earth’s Magnetotail

   https://doi.org/10.3847/1538-4357/ab9ab5  

   Ergun, R. E. ; Ahmadi, N. ; Kromyda, L. ; Schwartz, S. J. ; Chasapis, A. ; Hoilijoki, S. ; Wilder, F. D. ; Cassak, P. A. ; Stawarz, J. E. ; Goodrich, K. A. ; et al ( August 2020 , The Astrophysical Journal)

   null (Ed.)
4. Hydrodynamic transport and violation of the viscosity-to-entropy ratio bound in nodal-line semimetals

   https://doi.org/101103/PhysRevResearch.3.033003  

   Kim, Sang Wook ; Jose, Geo ; Uchoa, Bruno ( July 2021 , Physical review research)

   null (Ed.)

   The ratio between the shear viscosity and the entropy η/s is considered a universal measure of the strength of interactions in quantum systems. This quantity was conjectured to have a universal lower bound (1/4π)h ̄/kB, which indicates a very strongly correlated quantum fluid. By solving the quantum kinetic theory for a nodal-line semimetal in the hydrodynamic regime, we show that η/s ∝ T violates the universal lower bound, scaling toward zero with decreasing temperature T in the perturbative limit. We find that the hydrodynamic scattering time between collisions is nearly temperature independent, up to logarithmic scaling corrections, and can be extremely short for large nodal lines, near the Mott-Ragel-Ioffe limit. Our finding suggests that nodal-line semimetals can be very strongly correlated quantum systems. 

   more » « less
5. Explosive Magnetotail Activity

   https://doi.org/10.1007/s11214-019-0599-5  

   Sitnov, Mikhail ; Birn, Joachim ; Ferdousi, Banafsheh ; Gordeev, Evgeny ; Khotyaintsev, Yuri ; Merkin, Viacheslav ; Motoba, Tetsuo ; Otto, Antonius ; Panov, Evgeny ; Pritchett, Philip ; et al ( June 2019 , Space Science Reviews)