中国物理学会期刊网
海外物理新闻

 
Meetings: Optimism Abounds at Conference on Women in Physics

2017-08-16 22:00:00.0

The meeting focused on the people, programs, and ideas that have helped to break down the barriers to being a female physicist.


[Physics 10, 94] Published Wed Aug 16, 2017

doi:10.1103/Physics.10.94
 
 
Filling in a Tetraquark’s Profile

2017-08-16 22:00:00.0

An analysis of electron-positron collision data has determined the spin and parity of a particle thought to consist of four quarks.


[Physics] Published Wed Aug 16, 2017

 
 
Transistor Breaks Law of Thermal Conductivity

2017-08-15 22:00:00.0

A single-electron transistor carries more heat than that predicted by the Wiedemann-Franz law linking thermal and electrical conductivities.


[Physics] Published Tue Aug 15, 2017

 
 
Porous Materials Exhibit Granular-Like Stress Chains

2017-08-14 22:00:00.0

Author(s): Michael Zaiser

Simulations of porous materials exhibit internal stress patterns like those in granular materials, despite the fact that these two systems are practically “negative images” of each other.


[Physics 10, 92] Published Mon Aug 14, 2017

doi:10.1103/Physics.10.92
 
 
The Coolest Molecular Ion Beams

2017-08-14 22:00:00.0

Author(s): Philip Ball

Two research teams have created the coldest molecular ion beams ever, putting molecules in their ground states of rotation and providing improved experimental stand-ins for interstellar gas clouds.


[Physics 10, 93] Published Mon Aug 14, 2017

doi:10.1103/Physics.10.93
 
 
Q&A: The Network that Lies Beneath

2017-08-11 22:00:00.0

Network scientist Daniel Larremore draws on his diverse interests to make sense of patterns in sporting records, hiring decisions, and the spread of diseases.


[Physics 10, 91] Published Fri Aug 11, 2017

doi:10.1103/Physics.10.91
 
 
Strong Force Model for Weak Force Reactions

2017-08-10 22:00:00.0

A quark-based model called lattice QCD provides theoretical predictions for two weak-force-driven reactions—proton fusion and tritium decay.


[Physics] Published Thu Aug 10, 2017

 
 
Two-Pulse X Rays Probe Skyrmions

2017-08-09 22:00:00.0

A new x-ray spectroscopy technique can measure magnetic fluctuations in vortex-like structures called Skyrmions with nanosecond resolution.


[Physics] Published Wed Aug 09, 2017

 
 
Scanning Earth’s Interior with Neutrinos

2017-08-08 22:00:00.0

Future neutrino experiments may provide tomographic scans of Earth’s interior by viewing solar neutrinos that pass through our planet’s layers. ?


[Physics] Published Tue Aug 08, 2017

 
 
Neutron-Star Implosions as Heavy-Element Sources

2017-08-07 22:00:00.0

Author(s): Hans-Thomas Janka

A dramatic scenario in which a compact black hole eats a spinning neutron star from inside might explain a nearby galaxy’s unexpectedly high abundance of heavy elements.


[Physics 10, 89] Published Mon Aug 07, 2017

doi:10.1103/Physics.10.89
 
 
Bacteria Form Waveguides

2017-08-04 22:00:00.0

Author(s): Michael Schirber

A laser beam sent through a suspension of marine bacteria pulls the organisms into the beam, which focuses the light.


[Physics 10, 90] Published Fri Aug 04, 2017

doi:10.1103/Physics.10.90
 
 
Friction Means Life or Death for Ants

2017-08-03 22:00:00.0

Experiments show that the mass of an object determines whether it slides down a sandy slope, which may explain why insect predators called antlions can trap ants in sand pits.


[Physics] Published Thu Aug 03, 2017

 
 
The Thermodynamic Cost of Measuring Time

2017-08-02 22:00:00.0

Author(s): Anthony J. Short

A simple model of an autonomous quantum clock yields a quantitative connection between the clock’s thermodynamic cost and its accuracy and resolution.


[Physics 10, 88] Published Wed Aug 02, 2017

doi:10.1103/Physics.10.88
 
 
Organically Made Quantum Spin Liquids

2017-08-01 22:00:00.0

Versatile materials called metal-organic frameworks might be good systems in which to search for quantum spin liquids.


[Physics] Published Tue Aug 01, 2017

 
 
Research News: Editors’ Choice

2017-07-31 22:00:00.0

A movie stored in DNA, dancing black holes, and more in our monthly wrap-up of papers from the literature.


[Physics 10, 85] Published Mon Jul 31, 2017

doi:10.1103/Physics.10.85
 
 
Causality in the Quantum World

2017-07-31 22:00:00.0

Author(s): Jacques Pienaar

A new model extends the definition of causality to quantum-mechanical systems.


[Physics 10, 86] Published Mon Jul 31, 2017

doi:10.1103/Physics.10.86
 
 
For Colloidal Glasses, Size Matters

2017-07-28 22:00:00.0

Author(s): Katherine Wright

Imaging of the individual particles of a glass reveals the different behaviors of slightly smaller vs slightly larger particles, suggesting new ways to adjust the properties of commercial glasses.


[Physics 10, 87] Published Fri Jul 28, 2017

doi:10.1103/Physics.10.87
 
 
Particle Acceleration with Multiple Laser Pulses

2017-07-27 22:00:00.0

Trains of laser pulses can be used to accelerate high-repetition-rate electron bunches to high energies.


[Physics] Published Thu Jul 27, 2017

 
 
Electronic Tagging for Cells

2017-07-26 22:00:00.0

Researchers have made a radio-frequency identification device that fits inside a cell.


[Physics] Published Wed Jul 26, 2017

 
 
Quantum Sensing of Magnetic Fields

2017-07-25 22:00:00.0

A new design for an atomic magnetometer utilizes so-called quantum nondemolition measurements to detect very weak magnetic-field signals.


[Physics] Published Tue Jul 25, 2017

 
 
Spinning Black Holes May Grow Hair

2017-07-24 22:00:00.0

Author(s): Sam Dolan

A spinning black hole may lose up to 9% of its mass by spontaneously growing “hair” in the form of excitations of a hypothetical particle field with a tiny mass.


[Physics 10, 83] Published Mon Jul 24, 2017

doi:10.1103/Physics.10.83
 
 
New View of Cold Atoms Flowing

2017-07-21 22:00:00.0

Author(s): Mark Buchanan

A new technique produces an image of the flow of cold atoms through a channel, a potentially important tool for future cold-atom technology.


[Physics 10, 84] Published Fri Jul 21, 2017

doi:10.1103/Physics.10.84
 
 
Saturn-Shaped Drops

2017-07-20 22:00:00.0

An electric field can pull apart a millimeter-sized oil drop, causing it to shed thin rings from its equator that then break up into tiny droplets.


[Physics] Published Thu Jul 20, 2017

 
 
Seeing Scrambled Spins

2017-07-19 22:00:00.0

Author(s): Brian Swingle and Norman Y. Yao

Two experimental groups have taken a step towards observing the “scrambling” of information that occurs as a many-body quantum system thermalizes. ?


[Physics 10, 82] Published Wed Jul 19, 2017

doi:10.1103/Physics.10.82
 
 
Explaining Grid-Cell Firing

2017-07-19 22:00:00.0

A model explains why grid cells—neurons that are part of the brain’s positioning system—fire electrical pulses in hexagonal patterns.


[Physics] Published Wed Jul 19, 2017

 
 
Proton Loses Weight

2017-07-18 22:00:00.0

The most precise measurement to date of the proton mass finds a value that is 3 standard deviations lower than previous estimates.


[Physics] Published Tue Jul 18, 2017

 
 
Language Boundaries Driven by Surface Tension

2017-07-17 22:00:00.0

Author(s): Andrew D. M. Smith

A new model of language evolution assumes that changes in the spatial boundaries between dialects are controlled by a surface tension effect.


[Physics 10, 80] Published Mon Jul 17, 2017

doi:10.1103/Physics.10.80
 
 
Graphene Sliding on Graphene

2017-07-17 22:00:00.0

Author(s): Michael Schirber

Creating a bulge in a graphene sheet offers the first measurement of the shear forces between graphene layers, an essential factor in many graphene-based devices.


[Physics 10, 81] Published Mon Jul 17, 2017

doi:10.1103/Physics.10.81
 
 
Bacteria Never Swim Alone

2017-07-13 22:00:00.0

Simulations and theory indicate that the “synchronized swimming” of bacteria occurs in much sparser suspensions of the microorganisms than expected.


[Physics] Published Thu Jul 13, 2017

 
 
Active-Matter Thermodynamics Under Pressure

2017-07-12 22:00:00.0

Author(s): Denis Bartolo

Experiments show that, unlike an ideal gas, an active-matter system comprised of self-propelled disks does not have a well-defined mechanical pressure.


[Physics 10, 78] Published Wed Jul 12, 2017

doi:10.1103/Physics.10.78
 
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