Menu

Blog

Archive for the ‘particle physics’ category: Page 67

May 10, 2024

Tauonium: The smallest and heaviest atom with pure electromagnetic interaction

Posted by in categories: particle physics, quantum physics

The hydrogen atom was once considered the simplest atom in nature, composed of a structureless electron and a structured proton. However, as research progressed, scientists discovered a simpler type of atom, consisting of structureless electrons, muons, or tauons and their equally structureless antiparticles. These atoms are bound together solely by electromagnetic interactions, with simpler structures than hydrogen atoms, providing a new perspective on scientific problems such as quantum mechanics, fundamental symmetry, and gravity.

May 10, 2024

Max Planck’s ELISE reaches record values for ITER plasma heating

Posted by in category: particle physics

To do this, hydrogen ions are first generated, extremely accelerated in an electric field, and then neutralized to enter in the magnetic cage of the ITER tokamak where the plasma is confined. Such a powerful NBI heating—two particle beams are to deliver 16.5 megawatts each—has never been built before.

The aim of the Max Planck ELISE experiments is to generate a hydrogen ion beam with a reliably high current density and demonstrate quasicontinuous operation. The ion source of ELISE is half the size of the ion source for ITER.

What it means: The record ion current density means that ELISE has already achieved the ITER target, even though only a maximum of 75 percent of the high-frequency power available at ITER is available to generate the ion source plasma at the experimental testing facility.

May 10, 2024

Making Neutron-Deficient Nuclei

Posted by in category: particle physics

Adding neutrinos to an existing nucleosynthesis recipe can account for the puzzling existence of neutron-deficient heavy nuclei.

May 10, 2024

Physicists might have just discovered ‘glueballs’: the particles made entirely of force

Posted by in category: particle physics

Recent experiments might have finally confirmed the existence of glueballs, particles made entirely of gluons.

May 9, 2024

‘Superfluid spacetime’ points to unification of physics

Posted by in categories: computing, cosmology, particle physics, quantum physics

Since superfluid light exists in computers I think frankly we may already solve the theory of everything because the missing piece is infinity in all things which solves all future problems.


Thinking of spacetime as a liquid may be a helpful analogy. We often picture space and time as fundamental backdrops to the universe. But what if they are not fundamental, and built instead of smaller ingredients that exist on a deeper layer of reality that we cannot sense? If that were the case, spacetime’s properties would “emerge” from the underlying physics of its constituents, just as water’s properties emerge from the particles that comprise it. “Water is made of discrete, individual molecules, which interact with each other according to the laws of quantum mechanics, but liquid water appears continuous and flowing and transparent and refracting,” explains Ted Jacobson, a physicist at the University of Maryland, College Park. “These are all ‘emergent’ properties that cannot be found in the individual molecules, even though they ultimately derive from the properties of those molecules.”

Physicists have been considering this possibility since the 1990s in an attempt to reconcile the dominant theory of gravity on a large scale — general relativity — with the theory governing the very smallest bits of the universe—quantum mechanics. Both theories appear to work perfectly within their respective domains, but conflict with one another in situations that combine the large and small, such as black holes (extremely large mass, extremely small volume). Many physicists have tried to solve the problem by ‘quantizing’ gravity — dividing it into smaller bits, just as quantum mechanics breaks down many quantities, such as particles’ energy levels, into discrete packets. “There are many attempts to quantize gravity—string theory and loop quantum gravity are alternative approaches that can both claim to have gone a good leg forward,” says Stefano Liberati, a physicist at the International School for Advanced Studies (SISSA) in Trieste, Italy.

Continue reading “‘Superfluid spacetime’ points to unification of physics” »

May 9, 2024

On Truth & Reality: Philosophy Physics Metaphysics of Space, Wave Structure of Matter. Famous Science Art Quotes

Posted by in categories: particle physics, science, space

On Truth and Reality — Uniting Metaphysics, Philosophy, Physics and Theology (Science and Art) from One Thing, Absolute Space and the Spherical Standing Wave Structure of Matter. From Matter as ‘Particles’ generating ‘Fields’ in ‘Space-Time’, to Matter as Spherical Standing Waves in Space. The Wave-Center Causes ‘Particle Effect’, Wave Motion of Space Causes ‘Time’, Wave Interactions cause ‘Forces / Fields’

May 9, 2024

Physicists reveal the microscopic basis of a new form of quantum magnetism

Posted by in categories: particle physics, quantum physics

Not all magnets are the same. When we think of magnetism, we often think of magnets that stick to a refrigerator’s door. For these types of magnets, the electronic interactions that give rise to magnetism have been understood for around a century, since the early days of quantum mechanics. But there are many different forms of magnetism in nature, and scientists are still discovering the mechanisms that drive them.

Now, physicists from Princeton University have made a major advance in understanding a form of magnetism known as kinetic magnetism, using ultracold atoms bound in an artificial laser-built lattice. Their experiments, chronicled in a paper published in the journal Nature (“Directly imaging spin polarons in a kinetically frustrated Hubbard system”), allowed the researchers to directly image the microscopic object responsible for this magnetism, an unusual type of polaron, or quasiparticle that emerges in an interacting quantum system.

Researchers at Princeton have directly imaged the microscopic origins of a novel type of magnetism. (Image: Max Prichard, Waseem Bakr group at Princeton University)

May 9, 2024

Turning Quantum Noise Into a Teleportation Breakthrough

Posted by in categories: particle physics, quantum physics

Researchers succeeded in conducting an almost perfect quantum teleportation despite the presence of noise that usually disrupts the transfer of quantum state.

In teleportation, the state of a quantum particle, or qubit, is transferred from one location to another without sending the particle itself. This transfer requires quantum resources, such as entanglement between an additional pair of qubits. In an ideal case, the transfer and teleportation of the qubit state can be done perfectly. However, real-world systems are vulnerable to noise and disturbances — and this reduces and limits the quality of the teleportation.

Advancements in Noise-Resilient Teleportation.

May 9, 2024

Atomic-scale telegraphy with light

Posted by in categories: particle physics, quantum physics

In the 1880s Heinrich Hertz discovered that a spark jumping between two pieces of metal emits a flash of light – rapidly oscillating electromagnetic waves – which can be picked up by an antenna. To honour his groundbreaking work, the unit of frequency was named “Hertz” in 1930. Hertz’s findings were later used by Guglielmo Marconi (Nobel Prize in Physics, 1909) to transmit information over long distances creating radiocommunication and revolutionizing wireless telegraphy – shaping the modern world until today.

Scientists from the Department of Physics and the Regensburg Center for Ultrafast Nanoscopy (RUN), University of Regensburg, have now been able to directly observe a quantum version of Hertz’s spark jumping between just two atoms by measuring the oscillogram of the light it emits with temporal precision faster than a single oscillation cycle of the lightwave. This new signal enabled achieving a long-sought goal: atomic spatial resolution in all-optical microscopy.

As an unprecedented communication channel with the quantum world, this signal could be crucial for the development of super-fast quantum technologies as it gives new insights into the processes happening on lengthscales of single atoms and timescales faster than a trillionth of a second.

May 9, 2024

Physicist achieve milestone in quantum simulation with circular Rydberg qubits

Posted by in categories: computing, particle physics, quantum physics

The paper is published in the journal Physical Review X.

In the world of and quantum simulation technology, there is a fundamental challenge when using neutral atoms: The lifetime of Rydberg atoms, which are the building blocks for quantum computing, is limited. But there is a promising solution: circular Rydberg states.

For the first time, the research team has succeeded in generating and capturing circular Rydberg atoms of an alkaline-earth metal in an array of optical tweezers.

Page 67 of 591First6465666768697071Last