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Nature Physics offers news and reviews alongside top-quality research papers in a monthly publication, covering the entire spectrum of physics. Physics addresses the properties and interactions of matter and energy, and plays a key role in the development of a broad range of technologies. To reflect this, Nature Physics covers all areas of pure and applied physics research. The journal focuses on core physics disciplines, but is also open to a broad range of topics whose central theme falls within the bounds of physics.
Ενημερώθηκε: πριν από 3 ώρες 34 λεπτά

Origin of the critical state in sheared granular materials

Τετ, 24/01/2024 - 00:00

Nature Physics, Published online: 24 January 2024; doi:10.1038/s41567-023-02353-4

When applying sufficient strain, the flow of dense granular matter becomes critical. It is now shown that this state corresponds to random loose packing for spheres with different friction coefficients and that these packings can be mapped onto the frictionless hard-sphere system.

Minimally rigid clusters in dense suspension flow

Τετ, 24/01/2024 - 00:00

Nature Physics, Published online: 24 January 2024; doi:10.1038/s41567-023-02354-3

Dense suspensions are granular materials suspended in a liquid at high packing fractions, exhibiting high viscosity. The latter is now shown to be related to the formation of a network of rigid clusters at large shear stress.

Nodal <i>s</i><sub>±</sub> pairing symmetry in an iron-based superconductor with only hole pockets

Τρί, 23/01/2024 - 00:00

Nature Physics, Published online: 23 January 2024; doi:10.1038/s41567-023-02348-1

High-precision photoemission measurements determine that the superconducting pairing symmetry in KFe2As2 is the same as in other types of iron-based superconductors, despite having different features in the band structure.

Terahertz-field-driven magnon upconversion in an antiferromagnet

Τρί, 23/01/2024 - 00:00

Nature Physics, Published online: 23 January 2024; doi:10.1038/s41567-023-02350-7

Inducing coherent interactions between distinct magnon modes—collective excitations of magnetic order—has been challenging. A canted antiferromagnet has demonstrated coherent magnon upconversion induced by terahertz laser pulses.

Observation of possible excitonic charge density waves and metal–insulator transitions in atomically thin semimetals

Τρί, 23/01/2024 - 00:00

Nature Physics, Published online: 23 January 2024; doi:10.1038/s41567-023-02349-0

The mechanism of charge density wave formation has been hard to explain due to accompanying structural distortions. Now low-dimensional HfTe2 is revealed to host a purely electronic exitonic charge density wave driven by reduced screening effects.

False vacuum decay via bubble formation in ferromagnetic superfluids

Δευ, 22/01/2024 - 00:00

Nature Physics, Published online: 22 January 2024; doi:10.1038/s41567-023-02345-4

The transition from a metastable state to the ground state in classical many-body systems is mediated by bubble nucleation. This transition has now been experimentally observed in a quantum setting using coupled atomic superfluids.

Raman sideband cooling of molecules in an optical tweezer array

Δευ, 22/01/2024 - 00:00

Nature Physics, Published online: 22 January 2024; doi:10.1038/s41567-023-02346-3

Raman sideband cooling is a method used to prepare atoms and ions in their vibrational ground state. This technique has now been extended to molecules trapped in optical tweezer arrays.

Rich proton dynamics and phase behaviours of nanoconfined ices

Δευ, 22/01/2024 - 00:00

Nature Physics, Published online: 22 January 2024; doi:10.1038/s41567-023-02341-8

The phase diagram of confined ice is different from that of bulk ice. Simulations now reveal several 2D ice phases and show how strong nuclear quantum effects result in rich proton dynamics in 2D confined ices.

A kicked quasicrystal

Παρ, 19/01/2024 - 00:00

Nature Physics, Published online: 19 January 2024; doi:10.1038/s41567-023-02357-0

Quasicrystals are ordered but not periodic, which makes them fascinating objects at the interface between order and disorder. Experiments with ultracold atoms zoom in on this interface by driving a quasicrystal and exploring its fractal properties.

Covariant quantum kernels for data with group structure

Παρ, 19/01/2024 - 00:00

Nature Physics, Published online: 19 January 2024; doi:10.1038/s41567-023-02340-9

The kernel method in machine learning can be implemented on near-term quantum computers. A 27-qubit device has now been used to solve learning problems using kernels that have the potential to be practically useful.

Inverse design of high-dimensional quantum optical circuits in a complex medium

Παρ, 19/01/2024 - 00:00

Nature Physics, Published online: 19 January 2024; doi:10.1038/s41567-023-02319-6

Light passing through complex media is subject to scattering processes that mix together different photonic modes. This complexity can be harnessed to implement quantum operations.

Quasi-crystalline order in vibrating granular matter

Παρ, 19/01/2024 - 00:00

Nature Physics, Published online: 19 January 2024; doi:10.1038/s41567-023-02364-1

In quasi-crystals, constituents do not form spatially periodic patterns, but their structures still give rise to sharp diffraction patterns. Now, quasi-crystalline patterns are found in a system of spherical macroscopic grains vibrating on a substrate.

Universality class of a spinor Bose–Einstein condensate far from equilibrium

Παρ, 19/01/2024 - 00:00

Nature Physics, Published online: 19 January 2024; doi:10.1038/s41567-023-02339-2

The dynamics of isolated quantum many-body systems far from equilibrium is the object of intense research. Magnetization measurements in a spinor atomic gas now offer a way to classify universal dynamics based on symmetry and topology.

Spontaneous self-constraint in active nematic flows

Πέμ, 18/01/2024 - 00:00

Nature Physics, Published online: 18 January 2024; doi:10.1038/s41567-023-02336-5

Active flows in biological systems swirl. A coupling between active flows, elongated deformations and defect dynamics helps preserve self-organised structures against disordered swirling.

Non-Hermitian topology in a multi-terminal quantum Hall device

Πέμ, 18/01/2024 - 00:00

Nature Physics, Published online: 18 January 2024; doi:10.1038/s41567-023-02337-4

Non-Hermitian systems can be described in terms of gain and loss with a coupled environment—a hard feature to tune in quantum devices. Now an experiment shows non-Hermitian topology in a quantum Hall ring without relying on gain and loss.

Emergent seesaw oscillations during cellular directional decision-making

Πέμ, 18/01/2024 - 00:00

Nature Physics, Published online: 18 January 2024; doi:10.1038/s41567-023-02335-6

Cell motion along linear confinements is deterministic. Now a model predicts deterministic oscillations in cellular polarization at a Y junction in a set-up with adhesive patterns.

Flexoelectric polarizing and control of a ferromagnetic metal

Τετ, 17/01/2024 - 00:00

Nature Physics, Published online: 17 January 2024; doi:10.1038/s41567-023-02333-8

Electric polarization is well defined for insulators but not for metals. Electric-like polarization is now realized via inhomogeneous lattice strain in metallic SrRuO3, generating a pseudo-electric field. This field affects the material’s electronic bands.

Anomalous localization in a kicked quasicrystal

Τετ, 17/01/2024 - 00:00

Nature Physics, Published online: 17 January 2024; doi:10.1038/s41567-023-02329-4

Phases of matter can host different transport behaviours, ranging from diffusion to localization. Anomalous transport has now been observed in an interacting Bose gas in a one-dimensional lattice subject to a pulsed incommensurate potential.

Long-lived valley states in bilayer graphene quantum dots

Τετ, 17/01/2024 - 00:00

Nature Physics, Published online: 17 January 2024; doi:10.1038/s41567-023-02334-7

Using the valley degree of freedom in analogy to spin to encode qubits could be advantageous as many of the known decoherence mechanisms do not apply. Now long relaxation times are demonstrated for valley qubits in bilayer graphene quantum dots.

Heavy-tailed neuronal connectivity arises from Hebbian self-organization

Τετ, 17/01/2024 - 00:00

Nature Physics, Published online: 17 January 2024; doi:10.1038/s41567-023-02332-9

The strengths of connections in networks of neurons are heavy-tailed, with some neurons connected much more strongly than most. Now a simple network model can explain how this heavy-tailed connectivity emerges across four different species.

Σελίδες

Πανεπιστήμιο Κρήτης - Τμήμα Φυσικής - Πανεπιστημιούπολη Βουτών - TK 70013 Βασιλικά Βουτών, Ελλάδα
τηλ: +30 2810 394300 - email: chair@physics.uoc.gr