Agenparl

American Physical Society

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SYNOPSIS: KAON DECAYS REEVALUATED

Redazione
(AGENPARL) – WASHINGTON (D.C.), gio 17 settembre 2020 September 17, 2020• Physics 13, s120 A rigorous calculation of a matter-antimatter asymmetry in kaon decays has twice the precision of a previous calculation, removing tension that had existed between theory and experiment. The kaon is unbalanced, as particles go. Decays of......
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VIEWPOINT: THE ANATOMY OF ULTRAHIGH-ENERGY COSMIC RAYS

Redazione
(AGENPARL) – WASHINGTON (D.C.), mer 16 settembre 2020 Soebur Razzaque Centre for Astro-Particle Physics (CAPP) and Department of Physics, University of Johannesburg, Johannesburg, South Africa September 16, 2020• Physics 13, 145 New results from the Pierre Auger Observatory could narrow down the search for the origin of ultrahigh-energy cosmic rays.......
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SYNOPSIS: A TWIST IN TOPOLOGICAL WISDOM

Redazione
(AGENPARL) – WASHINGTON (D.C.), mer 16 settembre 2020 September 16, 2020• Physics 13, s122 New theoretical predictions overthrow the assumption that a material’s bulk topological properties are linked to the same properties at its surface.  K. Wang/Nanjing University K. Wang/Nanjing University × Common wisdom among researchers studying topological materials is......
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SYNOPSIS: HINTS OF DARK BOSONS

Redazione
(AGENPARL) – WASHINGTON (D.C.), mar 15 settembre 2020 September 15, 2020• Physics 13, s115 A signal predicted for a type of dark matter appears in the spectra of ytterbium isotopes. J. Hur/Massachusetts Institute of Technology J. Hur/Massachusetts Institute of Technology × Excitement is brewing among dark-matter researchers over signs that......
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SYNOPSIS: DETECTING ACOUSTIC BLACKBODY RADIATION

Redazione
(AGENPARL) – WASHINGTON (D.C.), mar 15 settembre 2020 September 15, 2020• Physics 13, s118 A nanomechanical resonator detects and isolates acoustic waves from a remote thermal source. R. Singh/University of Maryland, College Park R. Singh/University of Maryland, College Park × As objects heat up, they not only glow but also......
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VIEWPOINT: THE RICH INNER LIFE OF THE HYDROGEN CHAIN

Redazione
(AGENPARL) – WASHINGTON (D.C.), lun 14 settembre 2020 Dieter Vollhardt Center for Electronic Correlations and Magnetism, University of Augsburg, Augsburg, Germany September 14, 2020• Physics 13, 142 A one-dimensional chain of hydrogen atoms displays a wide variety of many-body effects—suggesting that the chain can be a useful model system for......
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OPINION: QUANTUM FOR ALL

Redazione
(AGENPARL) – WASHINGTON (D.C.), lun 14 settembre 2020 Irfan Siddiqi1, Darío Gil2, and Joseph S. Broz3 1University of California, Berkeley, and Lawrence Berkeley National Laboratory, CA, USA 2IBM Research, Yorktown Heights, NY, USA 3Quantum Economic Development Consortium (QED-C), Arlington, VA, USA September 14, 2020• Physics 13, 143 Propelling the development......
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FOCUS: NANOSCALE WARMING IS FASTER THAN COOLING

Redazione
(AGENPARL) – WASHINGTON (D.C.), ven 11 settembre 2020 September 11, 2020• Physics 13, 144 Contrary to conventional wisdom, a sufficiently small, cold object warms to the temperature of its surroundings faster than a warm object cools, according to a new theory. stsmhn/Getty Images Faster ice. Under certain conditions, a liquid......
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SYNOPSIS: A NEW WAY TO MEASURE MAGNONS

Redazione
(AGENPARL) – WASHINGTON (D.C.), gio 10 settembre 2020 September 10, 2020• Physics 13, s116 Magnetic quasiparticles called magnons are predicted to exhibit a measurable “orbital magnetic moment” in addition to their spin magnetic moment. R. Neumann/Martin Luther University Halle-Wittenberg R. Neumann/Martin Luther University Halle-Wittenberg × The field of spintronics aims......
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SYNOPSIS: AN INTRINSICALLY MAGNETIC TOPOLOGICAL INSULATOR

Redazione
(AGENPARL) – WASHINGTON (D.C.), mer 09 settembre 2020 September 9, 2020• Physics 13, s119 Experiments show that the ferromagnetism naturally possessed by the topological insulator manganese bismuth telluride extends right to the material’s surface. D. Nevola/Brookhaven National Laboratory D. Nevola/Brookhaven National Laboratory × Topological insulators that are intrinsically magnetic—rather than......

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