• Dark Matter Could Be Annihilating Inside White Dwarfs

    Updated: 2023-09-29 17:00:00
    Skip to content Universe Today Space and astronomy news Menu Videos Newsletter Podcast Contact Us Support Us Log in The white dwarf Sirius B compared to Earth . Credit : ESA and NASA Posted on September 29, 2023 September 29, 2023 by Brian Koberlein Dark Matter Could Be Annihilating Inside White Dwarfs As the search for dark matter particles continues to yield nothing , astronomers continue to look at ways these elusive particles might be found . One general method is to look for evidence of dark matter particle decay . Although dark matter doesn’t interact strongly with regular matter , some dark matter models predict that dark matter particles can interact with each other , causing them to decay into regular particles There have been several searches for this effect , but there’s no

  • A new highly precise measurement of the hypertriton lifetime

    Updated: 2023-09-29 15:10:06
    A hypertriton is a tritium nucleus in which a neutron is replaced by a so-called Lambda hyperon. This type of hypernucleus was first discovered in the 1950s has since been the key focus of numerous studies.

  • Making a Beamline for Deep UV Spectroscopy

    Updated: 2023-09-29 10:00:00
    Author(s): Michael SchirberBy using a pair of offset beams, researchers are able to generate femtosecond UV pulses that can be aimed directly into a target as a spectroscopic probe.[Physics 16, s127] Published Fri Sep 29, 2023

  • Quantum Ratchet Made Using an Optical Lattice

    Updated: 2023-09-28 10:00:00
    Author(s): Michael SchirberResearchers have turned an optical lattice into a ratchet that moves atoms from one site to the next. [Physics 16, s140] Published Thu Sep 28, 2023

  • A Fine Probe of Layer Stacking

    Updated: 2023-09-27 10:00:00
    Author(s): Matteo RiniThe combination of nuclear magnetic resonance with first-principles calculations uncovers the stacking patterns of layers of a quantum material—information that could enable a deeper understanding of the material’s behavior.[Physics 16, s139] Published Wed Sep 27, 2023

  • Antimatter Feels Gravity Just like Matter

    Updated: 2023-09-27 10:00:00
    Author(s): Allison GaspariniThe first direct observations of antihydrogen atoms falling in Earth’s gravity show that they experience gravity in the same way as ordinary matter does.[Physics 16, 167] Published Wed Sep 27, 2023

  • In a Twist, Composite Fermions Form and Flow without a Magnetic Field

    Updated: 2023-09-27 10:00:00
    Author(s): Jainendra JainCertain twisted semiconductor bilayers are predicted to host a Fermi liquid of composite fermions—remarkably, without an applied magnetic field.[Physics 16, 163] Published Wed Sep 27, 2023

  • Quasiparticles Repel, Then Attract

    Updated: 2023-09-26 10:00:00
    Author(s): Rachel BerkowitzResonant excitation of a thin-film semiconductor leads to impurities that attract rather than repel each other, providing a possible tool for manipulating superconductivity.[Physics 16, s132] Published Tue Sep 26, 2023

  • Breakthrough Prize for Quantum Field Theorists

    Updated: 2023-09-26 10:00:00
    Author(s): Michael SchirberThe 2024 Breakthrough Prize in Fundamental Physics goes to John Cardy and Alexander Zamolodchikov for their work in applying field theory to diverse problems.[Physics 16, 165] Published Tue Sep 26, 2023

  • Two Black Holes Masquerading as One

    Updated: 2023-09-25 10:00:00
    Author(s): Toby WisemanBlack holes may be less unique than previously thought, as the expansion due to a cosmological constant can hold apart a pair of holes and allow them to mimic a single black hole.[Physics 16, 164] Published Mon Sep 25, 2023

  • Theoretical study shows that Kerr black holes could amplify new physics

    Updated: 2023-09-22 16:40:02
    Black holes are regions in space characterized by extremely strong gravity, which prevents all matter and electromagnetic waves from escaping it. These fascinating cosmic bodies have been the focus of countless research studies, yet their intricate physical nuances are yet to be fully uncovered.

  • Metallic Gratings Produce a Strong Surprise

    Updated: 2023-09-22 10:00:00
    Author(s): Katherine WrightUsing a metallic grating and infrared light, researchers have uncovered a light–matter coupling regime where the local coupling strength can be 3.5 times higher than the global average for the material.[Physics 16, s130] Published Fri Sep 22, 2023

  • Packing Spheres in High Dimensions

    Updated: 2023-09-21 10:00:00
    Author(s): Charles DayAn algorithm originally developed for imaging generates useful data for a problem in pure mathematics.[Physics 16, s131] Published Thu Sep 21, 2023

  • Ancient Galactic Merger Impacted Star Formation in the Milky Way

    Updated: 2023-09-21 10:00:00
    Author(s): Allison GaspariniUsing machine learning, researchers show that a past collision with a dwarf galaxy changed the course of stellar evolution in the Milky Way.[Physics 16, 161] Published Thu Sep 21, 2023

  • Dark stars: Have we finally found a weird sun powered by dark matter?

    Updated: 2023-09-20 16:00:00
    Astronomers say they have spotted evidence of stars fuelled by the annihilation of dark matter particles. If true, it could solve the cosmic mystery of how supermassive black holes appeared so early

  • More Informative Together Than Apart

    Updated: 2023-09-20 10:00:00
    Author(s): Katherine WrightThe concurrent analysis of two measurements of a biochemical signaling network can provide more information than two separate probes of the datasets.[Physics 16, s138] Published Wed Sep 20, 2023

  • Self-Repelling Species Still Self-Organize

    Updated: 2023-09-19 10:00:00
    Author(s): Rachel BerkowitzCatalytically active particles form clusters when they respond not only to their own chemical targets but to those of other catalysts, too.[Physics 16, s128] Published Tue Sep 19, 2023

  • First Light for a Next-Generation Light Source

    Updated: 2023-09-19 10:00:00
    Author(s): Matteo RiniThe Linac Coherent Light Source, an x-ray free-electron laser at SLAC National Accelerator Laboratory, lights up for the first time after an upgrade that should allow it to deliver up to one million x-ray pulses per second.[Physics 16, 160] Published Tue Sep 19, 2023

  • Experiments Support Theory for Exotic Kagome States

    Updated: 2023-09-15 10:00:00
    Author(s): David EhrensteinThe observation of Fermi “pockets” in the Fermi surface of exotic superconductors provides a major step toward explaining some mysterious electronic states.[Physics 16, s135] Published Fri Sep 15, 2023

  • Striking a Balance for Quantum Bits

    Updated: 2023-09-15 10:00:00
    Author(s): Ryan WilkinsonA demonstration that certain electron-transport processes can be tuned in a hybrid semiconductor-superconductor system could be useful for developing quantum computers.[Physics 16, s124] Published Fri Sep 15, 2023

  • Graphene Has Topological Phonons

    Updated: 2023-09-14 10:00:00
    Author(s): Charles DayNew experiments reveal graphene’s exotic phonon spectrum with unprecedented detail and completeness.[Physics 16, s126] Published Thu Sep 14, 2023

  • Brain Asymmetry Driven by Task Complexity

    Updated: 2023-09-13 10:00:00
    Author(s): Ryan WilkinsonA mathematical model shows how increased intricacy of cognitive tasks can break the mirror symmetry of the brain’s neural network.<img src="https://physics.aps.org/assets/10.1103/Physics.16.s133/figure/1/large" width="200" height=\"100\"[Physics 16, s133] Published Wed Sep 13, 2023

  • Toward a Complete Theory of Crystal Vibrations

    Updated: 2023-09-11 10:00:00
    Author(s): Jan BergesA new set of equations captures the dynamical interplay of electrons and vibrations in crystals and forms a basis for computational studies.[Physics 16, 151] Published Mon Sep 11, 2023

  • Why Seawater Is Foamy

    Updated: 2023-09-08 10:00:00
    Author(s): Mark BuchananObservations of air-bubble mergers in water explain why dissolved salt slows this process and leads to foam.[Physics 16, 155] Published Fri Sep 08, 2023

  • Global Connectivity Predicts Reactivity

    Updated: 2023-09-07 10:00:00
    Author(s): Rachel BerkowitzThe reactivity of a material is describable using only the arrangement of its atoms, a finding that could be used to speed up the search for new catalytic materials.[Physics 16, s123] Published Thu Sep 07, 2023

  • Neutrino Mass in the Crosshairs

    Updated: 2023-09-06 10:00:00
    Author(s): Ryan WilkinsonThe first frequency-based limit on the neutrino’s mass sets the stage for next-generation experiments.[Physics 16, s121] Published Wed Sep 06, 2023

  • How Tightly Bound Are Hypertritons?

    Updated: 2023-09-05 10:00:00
    Author(s): Marric StephensResearchers have pinned down the binding energy and lifetime of the so-called hypertriton, a particle that could help explain the structure of neutron stars.[Physics 16, s129] Published Tue Sep 05, 2023

  • Active Particles Push the Boundaries of Two-Dimensional Solids

    Updated: 2023-09-05 10:00:00
    Author(s): Mathias CasiulisActive particles can form two-dimensional solids that are different from those formed by nonmotile particles, showing long-range crystalline order accompanied by giant spontaneous deformations.[Physics 16, 146] Published Tue Sep 05, 2023

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