Nature Physics August Issue

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TABLE OF CONTENTS August 2018 Volume 14, Issue 8 Editorial Comment Thesis Obituary Books & Arts Research Highlights News & Views Letters Articles Amendments & Corrections Measure for Measure   Editorial   Rethinking our physics heroes    p769 doi:10.1038/s41567-018-0263-0 Comment   The physics of infinity    pp770 - 772 George F. R. Ellis, Krzysztof A. Meissner & Hermann Nicolai doi:10.1038/s41567-018-0238-1 Advertisement Communications Physics: Open for Submissions Communications Physics is a new open access journal that publishes high-quality primary research articles, reviews and commentary representing significant advances and new insights to the field of physics. The journal is now open for submissions. Find out more >>>   Thesis   Witness the fitness    p773 Mark Buchanan doi:10.1038/s41567-018-0245-2 Obituary   Giancarlo Ghirardi    p774 Angelo Bassi doi:10.1038/s41567-018-0249-y Books & Arts   The jungle book    p775 Maria Maragkou doi:10.1038/s41567-018-0244-3 Research Highlights   That ticking noise    p776 Andreas H. Trabesinger doi:10.1038/s41567-018-0253-2 Elastic bits    p776 Abigail Klopper doi:10.1038/s41567-018-0254-1 Happy together    p776 Federico Levi doi:10.1038/s41567-018-0255-0 Single-photon gatekeepers    p776 Jan Philip Kraack doi:10.1038/s41567-018-0256-z Ballistic versus diffusive    p776 Yun Li doi:10.1038/s41567-018-0257-y Physics JOBS of the week Junior Research Chairs LabEx ENS ICFP Department of Physics, ENS (Ecole normale supérieure) Department of Physics - Ecole normale supérieure (ENS-ICFP) Tenure Eligible Investigator Mathematical Physics UBFC - Universite Bourgogne Franche-Comté ISTplus postdoctoral fellowship program: Biology, Computer Sience, Mathematics, Physics or Neuroscience Institute of Science and Technology Austria (IST Austria) Faculty Positions at Institute of Physics (IOP), Chinese Academy of Sciences (CAS) Institute of Physics (IOP), Chinese Academy of Sciences (CAS) More Science jobs from Physics EVENT X-ray Astronomy and Fundamental Physics 24.10.18 Buckinghamshire, UK More science events from News & Views   Clicks for doughnuts    pp777 - 778 Scott R. Waitukaitis doi:10.1038/s41567-018-0160-6 Stars take centre stage    pp778 - 779 Carlos Garzon-Coral & Jonathon Howard doi:10.1038/s41567-018-0164-2 A hot debut    pp779 - 780 Joseph N. Talmadge doi:10.1038/s41567-018-0158-0 Letters   Higgs mode in a strongly interacting fermionic superfluid    pp781 - 785 A. Behrle, T. Harrison, J. Kombe, K. Gao, M. Link et al. 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.   Observation of two types of fractional excitation in the Kitaev honeycomb magnet    pp786 - 790 Nejc Janša, Andrej Zorko, Matjaž Gomilšek, Matej Pregelj, Karl W. Krämer et al. 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.   Direct evidence of ferromagnetism in a quantum anomalous Hall system    pp791 - 795 Wenbo Wang, Yunbo Ou, Chang Liu, Yayu Wang, Ke He et al. doi:10.1038/s41567-018-0149-1 Long-range ferromagnetic order in co-doped topological insulator thin films and their typical ferromagnetic domain behaviour is directly evidenced by low-temperature magnetic force microscopy.   Ferroelectric quantum Hall phase revealed by visualizing Landau level wavefunction interference    pp796 - 800 Mallika T. Randeria, Benjamin E. Feldman, Fengcheng Wu, Hao Ding, András Gyenis et al. 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.   Momentum-space indirect interlayer excitons in transition-metal dichalcogenide van der Waals heterostructures    pp801 - 805 Jens Kunstmann, Fabian Mooshammer, Philipp Nagler, Andrey Chaves, Frederick Stein et al. doi:10.1038/s41567-018-0123-y A new type of exciton is observed in transition-metal dichalcogenide heterobilayers that is indirect in both real space and momentum space. It consists of a paired electron in MoS2 at the K point and hole spread across MoS2 and WSe2 at the Γ point.   Giant magnetic response of a two-dimensional antiferromagnet    pp806 - 810 Lin Hao, D. Meyers, Hidemaro Suwa, Junyi Yang, Clayton Frederick et al. doi:10.1038/s41567-018-0152-6 A superlattice consisting of SrIrO3 and SrTiO3 is shown to display a giant response to sub-tesla external magnetic fields—a direct consequence of its antiferromagnetic nature.   Topological kinematics of origami metamaterials    pp811 - 815 Bin Liu, Jesse L. Silverberg, Arthur A. Evans, Christian D. Santangelo, Robert J. Lang et al. doi:10.1038/s41567-018-0150-8 Origami-inspired metamaterial design gives rise to structures with kinematic properties dictated by the topology of their configuration space. The approach allows for well-defined metamaterial properties even in the presence of unpredictable forces.   Articles   Controlling Cherenkov angles with resonance transition radiation    pp816 - 821 Xiao Lin, Sajan Easo, Yichen Shen, Hongsheng Chen, Baile Zhang et al. 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.   A null test of general relativity based on a long-term comparison of atomic transition frequencies    pp822 - 826 Neil Ashby, Thomas E. Parker & Bijunath R. Patla doi:10.1038/s41567-018-0156-2 Years of data from atomic clocks around the world allow estimation of the variation of their rates with the spatial change of the solar potential. This allows the most precise null test of the local position invariance principle of general relativity.   Quantum simulation and spectroscopy of entanglement Hamiltonians    pp827 - 831 M. Dalmonte, B. Vermersch & P. Zoller 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.   Aggregation and collapse dynamics of skyrmions in a non-equilibrium state    pp832 - 836 Xiuzhen Yu, Daisuke Morikawa, Tomoyuki Yokouchi, Kiyou Shibata, Naoya Kanazawa et al. doi:10.1038/s41567-018-0155-3 A Lorentz transmission electron microscopy study of a thin iron germanium film reveals the aggregation dynamics of skyrmions when pushed out of equilibrium.   Pressure tuning of light-induced superconductivity in K3C60    pp837 - 841 A. Cantaluppi, M. Buzzi, G. Jotzu, D. Nicoletti, M. Mitrano et al. 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.   Equilibrium free energies from non-equilibrium trajectories with relaxation fluctuation spectroscopy    pp842 - 847 David Ross, Elizabeth A. Strychalski, Christopher Jarzynski & Samuel M. Stavis doi:10.1038/s41567-018-0153-5 Non-equilibrium physics grants access to equilibrium free energies from the work performed on fluctuating systems—but only when the work itself is measurable. Relaxation fluctuation spectroscopy provides an alternative route to these energies.   Physical forces determining the persistency and centring precision of microtubule asters    pp848 - 854 Hirokazu Tanimoto, Jeremy Sallé, Louise Dodin & Nicolas Minc doi:10.1038/s41567-018-0154-4 To perform key processes like division, many cells use star-shaped polymeric aster structures to find their centre. Force measurements now reveal that an active spring mechanism regulates this process, suppressing noise to ensure precise centration.   Magnetic configuration effects on the Wendelstein 7-X stellarator    pp855 - 860 A. Dinklage, C. D. Beidler, P. Helander, G. Fuchert, H. Maaßberg et al. 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.   A dynamical systems approach to gross domestic product forecasting    pp861 - 865 A. Tacchella, D. Mazzilli & L. Pietronero doi:10.1038/s41567-018-0204-y Inspired to methods developed for the study of complex systems, a framework for predicting gross domestic product growth outperforms the accuracy of the five-year forecast of the International Monetary Fund.   Amendments & Corrections   Publisher Correction: Pressure tuning of light-induced superconductivity in K3C60    p867 A. Cantaluppi, M. Buzzi, G. Jotzu, D. Nicoletti, M. Mitrano et al. doi:10.1038/s41567-018-0167-z Publisher Correction: Magnetic configuration effects on the Wendelstein 7-X stellarator    p867 A. Dinklage, C. D. Beidler, P. Helander, G. Fuchert, H. Maaßberg et al. doi:10.1038/s41567-018-0215-8 Publisher Correction: Topological quantum phase transition in the Ising-like antiferromagnetic spin chain BaCo2V2O8    p867 Quentin Faure, Shintaro Takayoshi, Sylvain Petit, Virginie Simonet, Stéphane Raymond et al. doi:10.1038/s41567-018-0248-z Measure for Measure   A short story on length    p868 Richard Davis doi:10.1038/s41567-018-0243-4 Advertisement Nature Briefing is an essential round-up of science news, opinion and analysis, free in your inbox every weekday. With Nature Briefing, we'll keep you updated on the latest research, so you can focus on yours. Click here to sign up.   Natureevents is a fully searchable, multi-disciplinary database designed to maximise exposure for events organisers. The contents of the Natureevents Directory are now live. The digital version is available here. Find the latest scientific conferences, courses, meetings and symposia on natureevents.com. 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