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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 30 λεπτά 45 δευτερόλεπτα

Quantum simulation and spectroscopy of entanglement Hamiltonians

Δευ, 21/05/2018 - 00:00

Quantum simulation and spectroscopy of entanglement Hamiltonians

Quantum simulation and spectroscopy of entanglement Hamiltonians, Published online: 21 May 2018; doi:10.1038/s41567-018-0151-7

The entanglement spectrum of a many-body quantum system encodes several of its properties. The construction of an artificial Hamiltonian that encodes the spectrum offers the possibility to probe it via quantum simulation or spectroscopy.

Higgs mode in a strongly interacting fermionic superfluid

Δευ, 21/05/2018 - 00:00

Higgs mode in a strongly interacting fermionic superfluid

Higgs mode in a strongly interacting fermionic superfluid, Published online: 21 May 2018; doi:10.1038/s41567-018-0128-6

An off-resonant radiofrequency modulation scheme applied to a strongly interacting superfluid Fermi gas reveals the presence of a Higgs mode — an oscillation of the amplitude of the superconducting order parameter.

A hot debut

Δευ, 21/05/2018 - 00:00

A hot debut

A hot debut, Published online: 21 May 2018; doi:10.1038/s41567-018-0158-0

The first campaign of the largest stellarator ever built, Wendelstein 7-X, has been successful, achieving high electron temperatures and minimal self-generated plasma current. This is very encouraging for future long-pulse, full-power operation.

Magnetic configuration effects on the Wendelstein 7-X stellarator

Δευ, 21/05/2018 - 00:00

Magnetic configuration effects on the Wendelstein 7-X stellarator

Magnetic configuration effects on the Wendelstein 7-X stellarator, Published online: 21 May 2018; doi:10.1038/s41567-018-0141-9

Results from the first experimental campaign of the Wendelstein 7-X stellarator demonstrate that its magnetic-field design grants good control of parasitic plasma currents, leading to long energy confinement times.

Author Correction: Geometric constraints during epithelial jamming

Παρ, 18/05/2018 - 00:00

Author Correction: Geometric constraints during epithelial jamming

Author Correction: Geometric constraints during epithelial jamming, Published online: 18 May 2018; doi:10.1038/s41567-018-0168-y

Author Correction: Geometric constraints during epithelial jamming

Publisher Correction: Pressure tuning of light-induced superconductivity in K<sub>3</sub>C<sub>60</sub>

Τρί, 15/05/2018 - 00:00

Publisher Correction: Pressure tuning of light-induced superconductivity in K3C60

Publisher Correction: Pressure tuning of light-induced superconductivity in K<sub>3</sub>C<sub>60</sub>, Published online: 15 May 2018; doi:10.1038/s41567-018-0167-z

Publisher Correction: Pressure tuning of light-induced superconductivity in K3C60

Controlling Cherenkov angles with resonance transition radiation

Δευ, 14/05/2018 - 00:00

Controlling Cherenkov angles with resonance transition radiation

Controlling Cherenkov angles with resonance transition radiation, Published online: 14 May 2018; doi:10.1038/s41567-018-0138-4

The angle of Cherenkov radiation in one-dimensional photonic crystals can be controlled by making use of constructive interference. This feature allows new design of particle detectors with improved performance.

Escape the thermal fate

Δευ, 14/05/2018 - 00:00

Escape the thermal fate

Escape the thermal fate, Published online: 14 May 2018; doi:10.1038/s41567-018-0157-1

Many-body quantum systems fail to reach thermalization only under specific circumstances. An analysis now reveals a new, different kind of non-equilibrating dynamics based on the many-body analogue of quantum scars in single-particle quantum chaos.

Ferroelectric quantum Hall phase revealed by visualizing Landau level wavefunction interference

Δευ, 14/05/2018 - 00:00

Ferroelectric quantum Hall phase revealed by visualizing Landau level wavefunction interference

Ferroelectric quantum Hall phase revealed by visualizing Landau level wavefunction interference, Published online: 14 May 2018; doi:10.1038/s41567-018-0148-2

A phase of strongly interacting electrons that has a spontaneous dipole moment is seen for the first time using an approach that images the electron's wavefunction through interference at an impurity.

The physics of cooperative transport in groups of ants

Δευ, 14/05/2018 - 00:00

The physics of cooperative transport in groups of ants

The physics of cooperative transport in groups of ants, Published online: 14 May 2018; doi:10.1038/s41567-018-0107-y

Evidence that ants communicate mechanically to move objects several times their size has prompted a theory that places the group near a transition between uncoordinated and coordinated motion. These findings and their implications are reviewed here.

Weak ergodicity breaking from quantum many-body scars

Δευ, 14/05/2018 - 00:00

Weak ergodicity breaking from quantum many-body scars

Weak ergodicity breaking from quantum many-body scars, Published online: 14 May 2018; doi:10.1038/s41567-018-0137-5

Ergodicity can be strongly broken by integrable or many-body localized systems. A new form of weak ergodicity breaking is shown to arise from the presence of special eigenstates in the many-body spectrum akin to quantum scars in chaotic systems.

Topological quantum phase transition in the Ising-like antiferromagnetic spin chain BaCo<sub>2</sub>V<sub>2</sub>O<sub>8</sub>

Δευ, 07/05/2018 - 00:00

Topological quantum phase transition in the Ising-like antiferromagnetic spin chain BaCo2V2O8

Topological quantum phase transition in the Ising-like antiferromagnetic spin chain BaCo<sub>2</sub>V<sub>2</sub>O<sub>8</sub>, Published online: 07 May 2018; doi:10.1038/s41567-018-0126-8

A neutron scattering study of an Ising-like quasi-one-dimensional antiferromagnet, BaCo2V2O8, reveals a topological quantum phase transition when it is subjected to a transverse magnetic field.

Observation of two types of fractional excitation in the Kitaev honeycomb magnet

Δευ, 07/05/2018 - 00:00

Observation of two types of fractional excitation in the Kitaev honeycomb magnet

Observation of two types of fractional excitation in the Kitaev honeycomb magnet, Published online: 07 May 2018; doi:10.1038/s41567-018-0129-5

α-RuCl3, a promising candidate to realize the Kitaev model, has attracted great interest recently. Two types of fractional excitation—gauge fluxes and Majorana fermions—are observed, which contribute to the spin excitation gap in different ways.

Pressure tuning of light-induced superconductivity in K<sub>3</sub>C<sub>60</sub>

Δευ, 07/05/2018 - 00:00

Pressure tuning of light-induced superconductivity in K3C60

Pressure tuning of light-induced superconductivity in K<sub>3</sub>C<sub>60</sub>, Published online: 07 May 2018; doi:10.1038/s41567-018-0134-8

Superconductivity is studied in the molecular solid K3C60 when it is pressurized and illuminated with short laser pulses. Similarities with the non-illuminated case show that superconductivity exists at higher temperatures than previously thought.

Science worth fighting for

Τετ, 02/05/2018 - 00:00

Science worth fighting for

Science worth fighting for, Published online: 02 May 2018; doi:10.1038/s41567-018-0147-3

Against a backdrop of political upheaval and polarization, European science continues to be a bright spot, at least for now.

A good egg

Τετ, 02/05/2018 - 00:00

A good egg

A good egg, Published online: 02 May 2018; doi:10.1038/s41567-018-0142-8

A good egg

Sum it up

Τετ, 02/05/2018 - 00:00

Sum it up

Sum it up, Published online: 02 May 2018; doi:10.1038/s41567-018-0145-5

Sum it up

Ignorance as strength

Τετ, 02/05/2018 - 00:00

Ignorance as strength

Ignorance as strength, Published online: 02 May 2018; doi:10.1038/s41567-018-0133-9

Ignorance as strength

Balancing energy and mass with neutrons

Τετ, 02/05/2018 - 00:00

Balancing energy and mass with neutrons

Balancing energy and mass with neutrons, Published online: 02 May 2018; doi:10.1038/s41567-018-0132-x

Michael Jentschel and Klaus Blaum explain why the most famous equation of physics needs checking — and how to do it.

Understanding complexity

Τετ, 02/05/2018 - 00:00

Understanding complexity

Understanding complexity, Published online: 02 May 2018; doi:10.1038/s41567-018-0136-6

The criteria by which the validity of theories of complex systems are judged are more nuanced than a naive understanding of ‘the scientific method’ suggests.

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