Dropped plastic bottles containing swirling water bounce significantly less than bottles containing standing still water after impacting the floor
Letter:
Focus:
Droplets of different liquids bounce off each other several times on a hot plate until they coalesce when the droplet that evaporates faster reaches a certain critical size dictated by the capillary length
Letter:
Video:
A measurement
@Fermilab
of the muon magnetic moment agrees with a longstanding
@BrookhavenLab
result, boosting tension with the standard-model
#gminus2
theory prediction to 4.2 standard deviations.
Letter:
#openaccess
Quantum squeezing has for the first time been used, by
@LIGO
&
@ego_virgo
, to improve the sensitivity of gravitational wave detectors, increasing their detection rate by up to 50%.
Letters:
#OpenAccess
Focus:
Congratulations to Alain Aspect, John Clauser, and Anton Zeilinger on being awarded the 2022
@NobelPrize
in Physics “for experiments with entangled photons, establishing the violation of Bell inequalities and pioneering quantum information science.” ➡️ 🧵
Congratulations to 2020
@NobelPrize
in Physics recipients Roger Penrose
@UniofOxford
, Reinhard Genzel
@UCBerkeley
, & Andrea Ghez
@UCLA
. These papers cited by the Nobel Committee are now free to read:
Volume 127, Issue 24
Cover: Breakup of a liquid jet by a continuous-wave laser into periodic drops (right two panels) over about 100 milliseconds
#coolvideo
Ignition of controlled thermonuclear fusion has finally been achieved—an important step on the road to fusion energy production
Letter:
#plasma
#renewables
@PhysRevE
:
Viewpoint:
A neural network based on a representation of the wave function guided by the quantum mechanical variational principle without reference to experimental data predicts electronic ground states in condensed matter without a priori knowledge of the system
Using a simple approach that relies only on the statistical properties of jammed packings, the random close packing volume fraction of hard spheres in two and three dimensions can be analytically derived
Condensate droplets on a thin oil film exhibit self propulsion driven by the interfacial energy released during droplet merging
#CoolVideo
Letter:
Synopsis:
Two years ago today, we published this
@LIGO
paper that began the field of gravitational wave astronomy, leading to the 2017
@NobelPrize
in Physics. It’s very clearly written and
#openaccess
.
The interaction of Doppler-boosted light with matter at intensities approaching the Schwinger limit is explored in numerical simulations showing the creation of electron-positron pairs forming high-density relativistic attosecond jets
Congratulations to Pierre Agostini, Ferenc Krausz, and Anne L’Huillier on being awarded the 2023
@NobelPrize
in Physics "for experimental methods that generate attosecond pulses of light for the study of electron dynamics in matter" 🧵1/3
A relativistic model of modified Newtonian dynamics (MOND) has been constructed that can explain the observed cosmic microwave background power spectrum, gravitational lensing, & gravitational-wave speed measurements.
Letter:
Focus:
The equivalence between minimizing the energy cost and finding the geodesic path solves the optimization problem in thermodynamics through methods developed in Riemannian geometry
"Entanglement and Superposition Are Equivalent Concepts in Any Physical Theory"
In general probabilistic theories, superposition, in the form of what the authors define as strong incompatibility, is equivalent to entanglement.
Volume 128, Issue 2
Cover: Certain chiral liquid crystals confined to quasi-two-dimensional curved shells (cholesteric shells) support topological phases that are absent in flat geometries
A phase transition in out-of-equilibrium dynamics can occur with a rather simple mechanism: a small change in a parameter can force the system to explore completely different configurations during the relaxation process
A carefully designed fluid-flow experiment provides the final explanation of Feynman’s sprinkler paradox by showing clear reverse rotation of a lawn sprinkler’s head when water flows back into it
Letter:
Focus:
The flow of active nematics induces persistent motion of particles at short and intermediate timescales whose defect-boundary interactions can be used to power persistent rotational motion
Letter:
Focus:
#OTD
60 years ago, Physical Review Letters was born. Here is the first issue, which contains an inaugural editorial by Editor Sam Goudsmit, and a Letter reporting the discovery of a new element, later named nobelium.
A minimal cell-based computational model demonstrates that fluid-like epithelial tissues become rigid above a critical applied strain, a process similar to shear-driven rigidity in other soft matter systems
#biophysics
Researchers use a laser to excite and precisely measure a long-sought exotic nuclear state, paving the way for precise timekeeping and ultrasensitive quantum sensing.
#OpenAccess
Viewpoint:
Letter:
Analysis of the gravitational waves from a black hole merger (GW200129) suggests that the final black hole received a kick that will send it out of its galaxy.
Letter:
Viewpoint:
Falling bodies are subject to random fluctuations whose characteristics depend on the quantum state of the gravitational field.
Letter:
#open
@PhysRevD
:
#open
The growth of a leaf under stress free conditions is determined by the time evolution of a conformal mapping, a model that accounts for many planar leaf shapes, the growth distribution around veins and near tips
Letter:
Synopsis:
There is a 4.5σ discrepancy between QED predictions and a 7-fold improvement in the measurement of the n=2 positronium fine structure
Letter:
Synopsis:
In systems of 3D active Brownian spheres, gas-liquid phase coexistence can decay into crystal-fluid phase coexistence through spontaneous nucleation that is enhanced with increasing particle activity
#coolvideo
Letter:
Focus:
Bounds on the entropy production of physical and living systems can be calculated directly from waiting time distributions, as demonstrated with data measured in a variety of biological processes
#biophysics
Letter:
Viewpoint:
2020
#NobelPrize
in Physics
Roger Penrose, Reinhard Genzel, Andrea Ghez
one half to Penrose “for the discovery that black hole formation is a robust prediction of the general theory of relativity”
Experiments confirm that a light beam’s polarization rotates when it travels through a gas of spinning molecules, a phenomenon predicted by Enrico Fermi almost a century ago
Letter:
Synopsis:
Numerical simulation of a glycerol-water sessile droplet showing that Marangoni flow near the surface has an opposite direction to the gravity-driven flow
Klaus von Klitzing writes about how the quantum Hall effect, discovered 39 years ago*, plays a central role in a new definition of the kilogram that is being adopted today,
#WorldMetrologyDay
.
Essay:
*
#FreeToRead
:
Observation of a Higgs boson produced with a top quark-antiquark pair, by
@CMSexperiment
@CERN
. This directly probes the Higgs-top coupling, which is consistent with the Standard Model prediction within 1σ.
#OpenAccess
Supercomputer simulations of the weather on a hot Jupiter
#exoplanet
reveal a previously unseen storm pattern in which cyclones are repeatedly generated and destroyed
#OpenAccess
A continuum model predicts a fingering instability at the leading front of a growing cell collective due to the feedback between pressure and growth rate, which could provide an evolutionary advantage
#biophysics
Water droplets can be made to emit coherently from two neighboring potential wells, demonstrating a hydrodynamic analog to the quantum superradiant emission effect involving photons
Letter:
Synopsis:
A generalization of the dimensionality reduction of an array of Riccati equations enables the consideration of a whole new class of complex oscillatory models
Letter:
Viewpoint:
The world’s premier physics letter journal, PRL remains the most-cited journal in physics and the highest-impact letters journal in the Physics, Multidisciplinary category.
High-speed imaging captures the impact of a water droplet on a superhydrophobic surface and uncovers the effects of a time-delayed secondary force that lifts the droplet off the surface
We encourage joint submissions with Physical Review. You can write a Letter for our broad readership and a longer paper for a more specialized audience. Here is our 2017 Editorial:
"Learning the Physics of Pattern Formation from Images"
Pixels in 2D video data provide information regarding the physics of pattern formation via an extension of the inversion problem applied to still images.
Letter:
We are launching a series of concise Essays which envision future directions for a given area
The first Essay is by M. Lisa Manning (
@ManningResearch
) on the potential for deformable particles in soft matter & biological physics:
Researchers teamed up with an artist to tweak a popular basket-weaving approach, finding a way to weave ribbons to produce any curvature desired
Letter:
Synopsis:
Two new Letters shed light on packing and jamming problems
Long-Range Anomalous Decay of the Correlation in Jammed Packings
Random Close Packing as a Dynamical Phase Transition
Numerical simulations show how non-Brownian suspensions evolving far from equilibrium can form a hyperuniform stable 2D crystal thanks to nonequilibrium fluctuations, a phase that has no equilibrium analog
Letter:
Research News:
We are very pleased to announce Physical Review Letters latest impact factor: 9.161
Many thanks to all of the authors, referees, editors, readers, and librarians who have made this year a success!
An experiment using an atomic Hall system in a cylindrical geometry realizes a 1981 thought experiment by Robert Laughlin to explain the quantization of Hall conductance.
Letter:
Viewpoint:
Though geometrically forbidden from doing so in flat space, some hard Platonic solids can entropically self-assemble into space-filling crystals with sufficient spatial curvature
Measurements of the hyperfine splitting of certain electronic levels of hydrogen have broken precision records, potentially enabling precise tests of quantum electrodynamics.
Letter:
Synopsis:
Game theory and hypergraph modeling of social systems help in understanding how making decisions in groups influences group polarization and irrational herding behaviors