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http://dx.doi.org/10.1103/PhysRevLett.90.069701 | DOI Listing |
J Acoust Soc Am
September 2024
Marine Physical Laboratory Scripps Institution of Oceanography, University of California San Diego, 9500 Gilman Drive, La Jolla, California 92093-0238, USA.
In their Comment, the authors conclude that acoustic glint is not present in the reflection coefficient of a two-layer sediment in which the top layer is an Airy medium. They conclude, not that the original, inverse-square analysis of the glint is incorrect, but rather that the presence of glint is very sensitive to the detailed shape of the sound speed profile in the top layer.
View Article and Find Full Text PDFJ Acoust Soc Am
September 2024
Geophysical Fluid Dynamics Laboratory, Il'ichev Pacific Oceanological Institute, Vladivostok 690041, Russia.
Buckingham [(2024). J. Acoust.
View Article and Find Full Text PDFPhys Rev Lett
April 2024
Department of Physics, University of Windsor, 401 Sunset Avenue, Windsor, Ontario N9B 3P4, Canada.
We formulate a Landau theory for altermagnets, a class of collinear compensated magnets with spin-split bands. Starting from the nonrelativistic limit, this Landau theory goes beyond a conventional analysis by including spin-space symmetries, providing a simple framework for understanding the key features of this family of materials. We find a set of multipolar secondary order parameters connecting existing ideas about the spin symmetries of these systems, their order parameters, and the effect of nonzero spin-orbit coupling.
View Article and Find Full Text PDFJAMA
April 2024
The Henry Jackson Foundation for the Advancement of Military Medicine, Bethesda, Maryland.
Importance: US government personnel stationed internationally have reported anomalous health incidents (AHIs), with some individuals experiencing persistent debilitating symptoms.
Objective: To assess the potential presence of magnetic resonance imaging (MRI)-detectable brain lesions in participants with AHIs, with respect to a well-matched control group.
Design, Setting, And Participants: This exploratory study was conducted at the National Institutes of Health (NIH) Clinical Center and the NIH MRI Research Facility between June 2018 and November 2022.
Proc Natl Acad Sci U S A
March 2024
Department of Pharmacology, Vanderbilt University, Nashville, TN 37240-7933.
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