Particle

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The Particle Adventure: Interactive Adventure of the Inner Workings of the Atom (Particle Data Group, Lawrence Berkeley National Laboatory)
Online Particle Physics Information (SLAC Library)

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particle : any of the basic units of matter and energy (such as a molecule, atom, proton, electron, or photon) — Webster

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Particle is a small localized object to which can be ascribed several physical or chemical properties such as volume, density or mass. They vary greatly in size or quantity, from subatomic particles like the electron, to microscopic particles like atoms and molecules, to macroscopic particles like powders and other granular materials. Particles can also be used to create scientific models of even larger objects depending on their density, such as humans moving in a crowd or celestial bodies in motion. — Wikipedia

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Particle physics (also high energy physics) is the branch of physics that studies the nature of the particles that constitute matter and radiation. Although the word particle can refer to various types of very small objects (e.g. protons, gas particles, or even household dust), particle physics usually investigates the irreducibly smallest detectable particles and the fundamental interactions necessary to explain their behavior. By our current understanding, these elementary particles are excitations of the quantum fields that also govern their interactions. The currently dominant theory explaining these fundamental particles and fields, along with their dynamics, is called the Standard Model. — Wikipedia

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Quantum Physics News Phys.org provides the latest news on quantum physics, wave particle duality, quantum theory, quantum mechanics, quantum entanglement, quantum teleportation, and quantum computing.

  • Avoiding environmental losses in quantum...
    on September 28, 2020 at 5:10 pm

    New research published in EPJ D has revealed how robust initial states can be prepared in quantum information systems, minimizing any unwanted transitions which lead to losses in quantum information.

  • Quantum entanglement realized between distant...
    on September 28, 2020 at 2:53 pm

    A team of researchers at the Niels Bohr Institute, University of Copenhagen, have succeeded in entangling two very different quantum objects. The result has several potential applications in ultra-precise sensing and quantum communication and is now published in Nature Physics.

  • To kill a quasiparticle: A quantum whodunit
    on September 28, 2020 at 2:15 pm

    In large systems of interacting particles in quantum mechanics, an intriguing phenomenon often emerges: groups of particles begin to behave like single particles. Physicists refer to such groups of particles as 'quasiparticles'.

  • Columbia leads effort to develop a quantum...
    on September 25, 2020 at 5:42 pm

    Quantum technologies—simulators and computers specifically—have the potential to revolutionize the 21st century, from improved national defense systems to drug discovery to more powerful sensors and communication networks.

  • Researchers work to create a roadmap on quantum...
    on September 25, 2020 at 5:14 pm

    The term 'quantum materials' was introduced to highlight the exotic properties of unconventional superconductors, heavy-fermion systems (materials with unusual electronic and magnetic properties) and multifunctional oxides. More recently, the definition has broadened to cover all the materials that allow scientists and engineers to explore emergent quantum phenomena and their potential applications.


Quantum Physics News -- ScienceDaily News on quantum physics. Read current research on everything from quantum mechanics to quantum dots. Was Albert Einstein right?

  • Antiferromagnet lattice arrangements influence...
    on September 28, 2020 at 4:50 pm

    New research reveals that the nature of the boundary at which an antiferromagnet transitions to a state of disorder slightly depends on the geometry of its lattice arrangement.

  • Avoiding environmental losses in quantum...
    on September 28, 2020 at 4:50 pm

    New research has revealed how robust initial states can be prepared in quantum information systems, minimizing any unwanted transitions which lead to losses in quantum information.

  • To kill a quasiparticle: A quantum whodunit
    on September 28, 2020 at 1:37 pm

    Quasiparticles die young, lasting far, far less than a second. Why? A new Monash University study finds a culprit beyond the usual suspect (decay into lower energy states). Identification of the new villain--many-body dephasing--may be key to controlling quantum effects such as superconductivity and superfluidity.

  • Physicists develop a method to improve...
    on September 25, 2020 at 3:36 pm

    Gravitational wave detectors opened a new window to the universe by measuring the ripples in spacetime produced by colliding black holes and neutron stars, but they are ultimately limited by quantum fluctuations induced by light reflecting off of mirrors. Researchers have conducted a new experiment to explore a way to cancel this quantum backaction and improve detector sensitivity.

  • Atom-billiards with x-rays: A new approach to...
    on September 25, 2020 at 3:36 pm

    Since these early days of quantum mechanics, it is known that photons also possess momentum. The photon's ability to transfer momentum was used in a novel approach by scientists to observe a fundamental process in the interaction of x-rays with atoms.