physics

If a car accelerates on a flat turn, it experiences both radial (centripetal) and tangential acceleration. The external forces acting on the car are its weight, the normal reaction force and static ...

A student’s routine lab shake produced a liquid that kept rebuilding a strange ancient shape, forcing scientists to rethink a basic rule.

Nature Communications, Published online: 06 June 2026; doi:10.1038/s41467-026-73154-5 Superballistic transport is a known hydrodynamic effect where viscous electrons can move collectively. Here, the authors provide evidence of superballistic electron flow under microwave irradiation in point contacts induced by edge magnetoplasmons.

Scientific Reports, Published online: 06 June 2026; doi:10.1038/s41598-026-54830-4 Permeability calculation for glutenite reservoirs based on variable T 2 cutoff value in nuclear magnetic resonance logging

To help with the idea, imagine a box sits in lab in frame S. At some moment, it somehow spontaneously creates 10 J of energy from nothing, without any push, so its momentum doesn't change: ΔE = 10 J, Δp = 0. Observer S' moves past at v = 0.6c (so γ = 1.25). Does this energy-creation event look... Read more

If we release an electron around a positively charged sphere, the initial state of electron is a linear combination of Hydrogen-like states. According to quantum mechanics, evolution of time would not change this initial state because the potential is time independent. However, classically we... Read more

A team at the University of Chicago has discovered a surprisingly simple way to create powerful quantum states that are normally difficult to produce. By making small adjustments to the energy levels of atoms inside an optical cavity, researchers can generate a wide variety of highly entangled states without adding complicated hardware.

A few updates: 1. The BBC got in touch last week to ask if I'd look at a press release and embargoed preprint on quantum computing to give some expert commentary.  The work turned out to be from Microsoft, claiming another breakthrough in their desire to fabricate functional majorana qubits.  The preprint shows their "multi-qubit" tetron device, with signals coming from its operation.  What was n…

Despite dozens of experiments over the years, scientists still don't have a precise measurement for gravity's strength. Why is that?

Hi, I apologize if this question has been asked before. Where I'm from, the physics university is terrible (underfunded, professors who don't like lecturing, lack of students, etc). I want to one day do research in the areas of: theoretical physics, mathematical models used in theoretical... Read more

I had a look at a number of books that deal with Special Relativity. Many, if not most, textbooks on the theory of Special Relativity introduce the Lorentz factor ##\gamma## $$\gamma=\frac{1}{\sqrt{1-\frac{v^2}{c^2}}}$$ Different textbooks introduce ##\gamma## differently; some use it only as a... Read more

The order of things Life and the world around us sometimes appears chaotic and random. We may feel this way about traffic, weather, economics, social change, politics, or our personal relationships. Perhaps that is why many yearn for regularity, predictability, order, and stability. Science is a search for patterns and order in the natural world. Condensed matter physics is about how order emerge…

If the position of a particle is described by a function of time then it will be $$\mathbf{p}(t) = x(t)\hat{\mathbf{x}} + y(t)\hat{\mathbf{y}} + z(t)\hat{\mathbf{z}}.$$ Then how can you represent it ...

Scientific Reports, Published online: 06 June 2026; doi:10.1038/s41598-026-56236-8 A hardware-efficient Berkeley gate for superconducting quantum processors

I know that a particle or wave (correct me if I’m wrong) is an excitation of underlying quantum fields. Then there’s string theory which says that particles are “strings.” Are these two theories connected in some way?

How do a pair of particles via entanglement “know” what the other particle is doing? Any help is appreciated.

Nature Communications, Published online: 05 June 2026; doi:10.1038/s41467-026-74064-2 The authors interface the quantum Hall edge modes of Cd3As2 films with a thin superconducting NbN strip. They find that the downstream thermoelectric response alternates in sign, revealing the contribution of crossed Andreev reflections.

You have a source that spits out two photons in opposite directions. Each hits its own polariser. When the angle between the two polarisers is 22.5 degrees you still get 85% correlation, violating ...

On higher gauge theory for principal 2-bundles with connection: In a broader context of higher gauge theory and relating to the Dirac monopole: On Snyder spacetimes and Lie triple systems: Generalization of Noether's theorem to Poisson-Lie group symmetries, not necessarily acting by symplectomorphisms, for which the conserved charges may be nonabelian: On categorified Tannaka duality between quas…

On higher gauge theory relating to the Dirac monopole: Hank Chen, Florian Girelli, Gauging the Gauge and Anomaly Resolution [arXiv:2211.08549] Hank Chen, Hopf 2-Algebras: Homotopy Higher Symmetries in Physics, PhD thesis (2024) [pdf] On categorified Tannaka duality between quasitriangular 2-bialgebras and braided monoidal 2-categories: