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Nature Physics offers a unique mix of news and reviews alongside top-quality research papers. Published monthly, in print and online, the journal reflects the entire spectrum of physics, pure and applied.
Ενημερώθηκε: πριν από 5 λεπτά 17 δευτερόλεπτα

Network experiment demonstrates converse symmetry breaking

Δευ, 20/01/2020 - 00:00

Nature Physics, Published online: 20 January 2020; doi:10.1038/s41567-019-0742-y

An experiment with three alternating-current generators demonstrates converse symmetry breaking—a phenomenon whereby the system achieves frequency synchronization when its component systems are tuned asymmetrically.

Echo in a single vibrationally excited molecule

Δευ, 20/01/2020 - 00:00

Nature Physics, Published online: 20 January 2020; doi:10.1038/s41567-019-0762-7

Following an impulsive laser excitation of a single molecule, a dispersed vibrational wave-packet is partially rephased by a second pulse, and a wave-packet echo is observed. This wave-packet echo probes ultrafast intramolecular processes in the isolated molecule.

Bioelectrical domain walls in homogeneous tissues

Δευ, 20/01/2020 - 00:00

Nature Physics, Published online: 20 January 2020; doi:10.1038/s41567-019-0765-4

A detailed theoretical and experimental investigation of homogeneous cell tissues finds that they can undergo spontaneous spatial symmetry breaking through a purely electrophysiological mechanism.

Many-body physics with individually controlled Rydberg atoms

Δευ, 20/01/2020 - 00:00

Nature Physics, Published online: 20 January 2020; doi:10.1038/s41567-019-0733-z

This Review Article outlines the techniques necessary for the manipulation of neutral atoms and making use of their interactions, when excited to Rydberg states, to achieve the goal of quantum simulation of many-body physics.

Dynein harnesses active fluctuations of microtubules for faster movement

Δευ, 20/01/2020 - 00:00

Nature Physics, Published online: 20 January 2020; doi:10.1038/s41567-019-0757-4

The motor protein dynein is associated with microtubule force generation in the cell; how it interacts with cytoskeletal fluctuations is still an open question. Here the authors show that dynein can harness these fluctuations to generate power and move faster towards the minus-end of microtubules.

Publisher Correction: Mathematical languages shape our understanding of time in physics

Πέμ, 16/01/2020 - 00:00

Nature Physics, Published online: 16 January 2020; doi:10.1038/s41567-020-0794-z

Publisher Correction: Mathematical languages shape our understanding of time in physics

Negative representation and instability in democratic elections

Δευ, 13/01/2020 - 00:00

Nature Physics, Published online: 13 January 2020; doi:10.1038/s41567-019-0739-6

In a mathematical model of democratic elections, electoral instability is shown to be linked to negative representation, which occurs when a shift in electoral opinions pushes the election outcome in the opposite direction.

Electromagnetically induced transparency at a chiral exceptional point

Δευ, 13/01/2020 - 00:00

Nature Physics, Published online: 13 January 2020; doi:10.1038/s41567-019-0746-7

The optical analogue of electromagnetically induced transparency and absorption can be modulated by chiral optical states at an exceptional point, which is shown in a system of indirectly coupled microresonators.

Near-Earth magnetotail reconnection powers space storms

Δευ, 13/01/2020 - 00:00

Nature Physics, Published online: 13 January 2020; doi:10.1038/s41567-019-0749-4

Magnetic reconnection in the near-Earth magnetotail is observed to power a space storm, although suppression of magnetic reconnection caused by the Earth’s magnetic dipole was expected close to Earth.

Spectromicroscopic measurement of surface and bulk band structure interplay in a disordered topological insulator

Δευ, 13/01/2020 - 00:00

Nature Physics, Published online: 13 January 2020; doi:10.1038/s41567-019-0759-2

The authors develop a high-spatial-resolution photoemission technique to show variation of the energy of the Dirac point of approximately 50 meV. They also find an interplay between bulk and surface states.

Variational quantum unsampling on a quantum photonic processor

Δευ, 13/01/2020 - 00:00

Nature Physics, Published online: 13 January 2020; doi:10.1038/s41567-019-0747-6

The variational quantum unsampling protocol provides a way to realize verification and inference of near-term quantum circuit outputs. This protocol is then experimentally verified on a quantum photonic processor.

From ferromagnets to electoral instability

Δευ, 13/01/2020 - 00:00

Nature Physics, Published online: 13 January 2020; doi:10.1038/s41567-019-0761-8

An electoral model predicts that polarized and alienated voters lead to unstable elections, like phase transitions in an Ising model. Such physics-inspired models may help political scientists devise electoral reforms to quench instability.

Observation of exciton polariton condensation in a perovskite lattice at room temperature

Δευ, 13/01/2020 - 00:00

Nature Physics, Published online: 13 January 2020; doi:10.1038/s41567-019-0764-5

Non-equilibrium Bose–Einstein condensation of exciton polaritons in chains of lead halide perovskite pillars can occur at room temperature. These condensates have long spatial coherence.

The cost of synchronization

Τετ, 08/01/2020 - 00:00

Nature Physics, Published online: 08 January 2020; doi:10.1038/s41567-019-0735-x

Synchronization of biochemical oscillators that are responsible for biological rhythms costs free energy. This theoretical result suggests that part of the adenosine triphosphate molecules consumed by a Kai oscillator is necessary for synchronization.

From classical to quantum

Τετ, 08/01/2020 - 00:00

Nature Physics, Published online: 08 January 2020; doi:10.1038/s41567-019-0779-y

From classical to quantum

Quantum phases on demand

Τετ, 08/01/2020 - 00:00

Nature Physics, Published online: 08 January 2020; doi:10.1038/s41567-019-0781-4

The need to control and manipulate the properties of quantum materials has led to a burst of interest in their properties out of equilibrium. Understanding this regime represents an opportunity for theorists and experimentalists alike.

Mix and match

Τετ, 08/01/2020 - 00:00

Nature Physics, Published online: 08 January 2020; doi:10.1038/s41567-019-0777-0

Mix and match

You are your own vector

Τετ, 08/01/2020 - 00:00

Nature Physics, Published online: 08 January 2020; doi:10.1038/s41567-019-0768-1

You are your own vector

In pursuit of Poiseuille

Τετ, 08/01/2020 - 00:00

Nature Physics, Published online: 08 January 2020; doi:10.1038/s41567-019-0775-2

In pursuit of Poiseuille

Some like it hot

Τετ, 08/01/2020 - 00:00

Nature Physics, Published online: 08 January 2020; doi:10.1038/s41567-019-0766-3

Working in a Mexican restaurant during his teenage years, Mark Buchanan discovered his love for jalapeños. Since then he has climbed higher and higher on the Scoville scale.

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