• String Theory Debate

    Updated: 2024-12-28 22:26:09
    Recently Curt Jaimungal offered to host a debate over string theory between me and a willing string theorist. Joe Conlon took him up on the offer and our discussion is now available. I think it turned out quite well, and … Continue reading →

  • Dark Energy Debunked By "Lumpy" Universe Expansion

    Updated: 2024-12-27 18:00:00
    Learn how the existence of dark energy is being challenged due to new evidence that the expanding universe is actually "lumpy".

  • Quantum entanglement can be endlessly 'embezzled' from quantum fields

    Updated: 2024-12-24 14:00:25
    Some quantum fields that extend throughout all of space-time could be a rich resource of quantum entanglement that can be extracted forever

  • Physicists in 2024 searched the quantum realm for the truth about time

    Updated: 2024-12-24 10:00:14
    Two separate theoretical studies published this year argued that time itself is bound up in the odd quantum property of entanglement, but deep mysteries remain

  • Seeking Signatures of High-Energy Vortex States

    Updated: 2024-12-23 10:00:00
    Author(s): Rachel BerkowitzA proposed method could detect vortex states of high-energy particles through a scattering phenomenon called a superkick.[Physics 17, s157] Published Mon Dec 23, 2024

  • Toward a Second Law for Living Systems

    Updated: 2024-12-23 10:00:00
    Author(s): Rainer KlagesA new theory related to the second law of thermodynamics describes the motion of active biological systems ranging from migrating cells to traveling birds.[Physics 17, 182] Published Mon Dec 23, 2024

  • Mapping Spin Waves with a Strobe Light

    Updated: 2024-12-20 10:00:00
    Author(s): Michael SchirberA method for imaging spin waves in magnetic materials uses flash-like intensity variations in a laser beam to capture the wave motion at specific moments in time.[Physics 17, 186] Published Fri Dec 20, 2024

  • Taking the Temperature of Earth’s Core

    Updated: 2024-12-18 10:00:00
    Author(s): Marric StephensBy measuring the melting temperature of iron under high transient pressure, researchers set a limit on the temperature at the boundary between the inner and outer cores.[Physics 17, s139] Published Wed Dec 18, 2024

  • Podcast: A Milestone in Laser-Plasma Acceleration

    Updated: 2024-12-18 10:00:00
    Author(s): Julie Gould and Matteo RiniResearchers from the Berkeley Lab Laser Accelerator Center talk about their latest results on a laser-based particle-acceleration technique that could lead to cheaper and more compact x-ray sources and particle accelerators.<img src="https://physics.aps.org/assets/10.1103/Physics.17.185/figure/1/thumb" width="200" height=\"100\"[Physics 17, 185] Published Wed Dec 18, 2024

  • Electrons Channel Surf to Ultrahigh Energies

    Updated: 2024-12-18 10:00:00
    Author(s): Marlene TurnerA laser-driven electron accelerator delivers beams of ∼10-GeV electrons—an approach that could lead to cheaper, more compact alternatives to large-scale x-ray sources and particle accelerators.[Physics 17, 183] Published Wed Dec 18, 2024

  • The Puzzle of Radiation-Resistant Alloys

    Updated: 2024-12-17 10:00:00
    Author(s): Ryan WilkinsonAtomic simulations deepen the mystery of how engineered materials known as refractory high-entropy alloys can suffer so little damage by radiation.[Physics 17, s156] Published Tue Dec 17, 2024

  • Seeking Supernovae in Seafloor Sediments

    Updated: 2024-12-17 10:00:00
    Author(s): Rachel BerkowitzMinerals exposed during an ancient Mediterranean Sea desiccation should reveal damage caused by muons, providing evidence of enhanced cosmic-ray fluxes.[Physics 17, s136] Published Tue Dec 17, 2024

  • Eating Without Limit: Ravenous Object May Explain Early Black Hole Growth

    Updated: 2024-12-17 10:00:00
    Author(s): Elizabeth FernandezA black hole accreting mass above the so-called Eddington limit may explain how supermassive black holes reach billions of times the mass of our Sun.[Physics 17, 180] Published Tue Dec 17, 2024

  • Ultracold Fermions Enter the Fractional Quantum Hall Arena

    Updated: 2024-12-16 10:00:00
    Author(s): Fabian GrusdtBy controlling the motion and interaction of individual atoms in a cold-atom ensemble, researchers have produced a correlated topological state of matter, called a fractional quantum Hall state.[Physics 17, 178] Published Mon Dec 16, 2024

  • (Blinkered) Visions in Quantum Gravity

    Updated: 2024-12-13 17:25:57
    This past summer Nordita ran a program on quantum gravity, featuring lectures and panel discussions on various approaches to the subject. Lecture notes from the six mini-courses are now available here. There’s also a long, 39 author document called Visions … Continue reading →

  • Gravitational Versions of Quantum Experiments

    Updated: 2024-12-13 10:00:00
    Author(s): Mark BuchananMeasuring gravitational analogues of quantum phenomena could lead to high-precision measurement of gravitational forces, according to a theoretical proposal.[Physics 17, 179] Published Fri Dec 13, 2024

  • Predicting the Behavior of Knitted Fabrics

    Updated: 2024-12-12 10:00:00
    Author(s): Elizabeth FernandezA simplified model of how yarns interact shows that a piece of knitted fabric can have many stable resting states depending on its history of deformation.[Physics 17, s153] Published Thu Dec 12, 2024

  • Simulating Superconductivity in Optical Lattices

    Updated: 2024-12-12 10:00:00
    Author(s): Ryan WilkinsonResearchers have devised a way to use atoms in optical lattices to model high-temperature superconductors, whose behavior is not yet fully understood.[Physics 17, s144] Published Thu Dec 12, 2024

  • Newly Discovered Acoustic Forces

    Updated: 2024-12-11 10:00:00
    Author(s): Charles DayCalculations have uncovered two previously unknown forces that act on nonspherical particles in a sound field.[Physics 17, s155] Published Wed Dec 11, 2024

  • A Laser Casts a Shadow

    Updated: 2024-12-09 10:00:00
    Author(s): Rachel BerkowitzThrough its interactions with a crystal, light becomes an opaque object—an effect that could be harnessed in applications.[Physics 17, 174] Published Mon Dec 09, 2024

  • Wick Rotating Weyl Spinor Fields

    Updated: 2024-12-08 00:17:51
    It’s been taking me forever to sort out and write down the details of implications of the proposal described here. While waiting for that to be done, I thought it might be a good idea to write up one piece … Continue reading →

  • Quantum Radar over Long Distances

    Updated: 2024-12-06 10:00:00
    Author(s): Mark BuchananA proposed remote-sensing scheme could potentially probe targets hundreds of kilometers away and uses one of the strangest quantum properties of light.[Physics 17, 173] Published Fri Dec 06, 2024

  • Spotting the Scars of Spacetime

    Updated: 2024-12-05 10:00:00
    Author(s): Ryan WilkinsonScientists have devised a way to use current gravitational-wave detectors to observe permanent deformations of spacetime caused by certain supernovae.[Physics 17, s152] Published Thu Dec 05, 2024

  • A Toroidal Mode in an Excited Nucleus

    Updated: 2024-12-04 10:00:00
    Author(s): Charles DayNuclear scattering data suggest the possible observation of a predicted but never-observed nuclear vibration.[Physics 17, s146] Published Wed Dec 04, 2024

  • Enter the Mechanical Qubit

    Updated: 2024-12-04 10:00:00
    Author(s): Susan CurtisThe demonstration of the first fully functioning mechanical qubit offers a new platform for quantum information processing and could lead to ultraprecise gravity sensors.[Physics 17, 172] Published Wed Dec 04, 2024

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