2020 Impact factor 0.993
Applied Physics

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EPJA appoints Patrizia Rossi as Managing Editor for Reviews and Letters to the Editor (experiment)

Patrizia Rossi

The publishers of The European Physical Journal A: Hadrons and Nuclei are pleased to announce the appointment of Dr Patrizia Rossi as Managing Editor for Reviews and Letters to the Editor (experiment) as of 1 January 2022.

Patrizia Rossi is the Deputy Associate Director for Nuclear Physics at Jefferson Lab (JLab), Research Professor at George Washington University, and Research Director at the Frascati National Laboratories of INFN-Italy (on leave). Her scientific research focuses on hadron and nuclear physics using electromagnetic probes. This research aims to study the structure of the nucleon and the nature of the strong interaction in terms of fundamental constituents of QCD. Her most recent investigations are related to the study of the transverse momentum parton distribution functions for which she is co-spokesperson for several experiments.

EPJ Plus Focus Point on Small and Medium Particle Accelerator Facilities in Europe

Small and Medium Particle Accelerator Facilities (SMPAF) play a very important role in the landscape of European research. They can accelerate a variety of atomic nuclei, at energies in the MeV range, and have a cross-disciplinary application field. In most cases, they are open to external users, so a proper knowledge by the community of the possibilities provided by these facilities is of great importance.

Unlike other user-focused accelerators facilities such as synchrotrons, SMPAF have different characteristics. Given the relevance and the variability of the instrumentation and the available techniques (including medical science, neutrons, irradiation with swift heavy ions, detectors tests, low-energy nuclear physics, etc.), it has been found very timely to publish a series of focused articles, describing the current situation of some key centres of this kind. This Focus Point on Small and Medium Particle Accelerator Facilities in Europe presents a selection of ten representative and significant European SMPAF. Each article contains a brief description of the facility, including its often unique instrumentation or techniques, and a few recent research highlights.

All articles are available here and are freely accessible until 9 February 2022. For further information read the Editorial

EPJE has appointed new Editor-in-Chief Giovanna Fragneto

Giovanna Fragneto

The publishers of European Physical Journal E: Soft Matter and Biological Physics are delighted to announce the appointment of Prof Giovanna Fragneto as Editor-in-Chief, starting January 1 2022. Prof Fragneto has served on the Editorial Board of EPJE since 2011, and takes over the EiC role from Prof François Graner, who steps down at the end of this year.

Prof Fragneto joins Prof Fabrizio Croccolo and Prof Holger Stark as Editors-in-Chief for EPJE, with collective responsibility for papers submitted across the scope of the journal.

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EPJE Topical review - Advances in the study of supercooled water

Water connects to life at many levels, from biology to human activities, health, climate, and technology. And it is the most peculiar simple liquid on our planet. In fact, water presents several anomalies as compared to other simple liquids. These anomalies become more conspicuous at low temperatures within the metastable supercooled regime, that is, the region below its melting point where the stable form is the ordered solid. In this regime water can also exist in the liquid state while at lower temperatures it can also be found in the amorphous (glassy) solid state. In the supercooled state liquid water displays polymorphism displaying both a high density and a low-density structure. The two possible structures that water can choose, and their interplay, are connected with the possible existence of the terminating (critical) point of a line that separates a low-density region from a high-density region and above which the liquid exists in a single phase.

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EPJ ST Highlight - An exploration of tipping in complex systems

This special issue examines the extensive landscape of research into tipping within complex systems, and provides guidance as to where the field will likely be headed in the future.

Complex systems can be found in a diverse array of real-world scenarios, but are unified by their ability to suddenly transition between drastically different patterns of behaviour. Known as ‘tipping,’ this type of transformation is generally triggered by small changes in the parameters of individual systems – whose effects can rapidly cascade to alter entire networks of interacting subsystems. This special issue of EPJ Special Topics explores the nature of tipping in complex systems through 21 new articles. Together, the studies reveal recent trends and directions of research within the field, and highlight the pressing challenges it will face in the future.

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EPJ E Topical review - Structure and dynamics of nanoconfined water and aqueous solutions

Water, regarded as the matrix of life, is an ubiquitous and peculiar liquid that exhibits a plethora of anomalous properties, both in its stable and metastable bulk states, which fostered a lot of experimental and theoretical studies. Less explored is the field of water and aqueous systems confined in nanoporous materials that, in addition to its fundamental interest, are present in a number of practical situations, including biological and separation processes and energy generation and storage, among others. These facts have triggered a vast amount of research that, so far, has not been conveniently reviewed.

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EPJ ST Highlight - Examining the dynamics of complex networks

A new collection of papers focuses on the theories and methodology of dynamical networks with a focus on neuroscience and Earth sciences, and climate systems.

A special issue of EPJ Special Topics, edited by Jürgen Kurths (Potsdam Institute for Climate Impact Research), Elbert E. N. Macau (Federal University of São Paulo), Antonio C. Roque (University of São Paulo) and Serhiy Yanchuk (Humboldt University Berlin) brings together a collection of papers focusing improving our understanding of the collective dynamics of complex systems. The special issue pays particular attention to the applications of this understanding in the diverse fields of neuroscience, climate modelling, and Earth science.

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EPJ C Highlight - Hubble tension: Showing the cracks in Gaussian Processes

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Tensions emerge through measurements of H0. Figure source: https://upload.wikimedia.org/ wikipedia/commons/0/0b/ Planck_satellite_cmb.jpg

Today, Gaussian Processes data reconstruction is viewed as a vital tool in cosmology. Yet through new analysis of tensions in the value of Hubble’s constant, two researchers suggest that the approach may not be as valid as currently thought.

The technique of Gaussian Processes (GP) is widely used to reconstruct cosmological parameters, most notably the expansion rate of the universe, using observational data. For many cosmologists, the crowning achievement of this approach is its ‘model independence’ – meaning it can be applied universally across all models. Through new analysis published in EPJ C, Eoin Ó Colgáin at Sogang University, Seoul, and Mohammad Mehdi Sheikh-Jabbari at IPM, Tehran, use the Hubble constant (H0) to show that this may not be the case – and that it may be time to question the validity of model independence itself.

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EPJ A Highlight - Celebrating the impacts of Jacques Raynal’s work in the development of nuclear reaction formalism, codes and analysis

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This topical article edition of EPJ A is dedicated to the memory of French nuclear physicist Jacques Raynal, who passed away on April 10th, 2020.

It illustrates, through a series of peer-reviewed articles, the various facets of what Raynal and his colleagues accomplished, as well as the profound influence of his results in several domains of nuclear reactions, both for theory formalism and for the analysis and understanding of experimental observables. The articles also demonstrate how his work paved the way for the future development of concepts and numerical codes for nuclear reaction calculations.

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EPJ C Highlight - The first black hole image: A gravitomagnetic monopole as an alternative explanation

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The first image taken of the compact object at the heart of M87. Researchers consider this to be a supermassive black hole, but a new research paper asks if the image have an alternative cause. Credit: Event Horizon Telescope Collaboration

The Event Horizon Telescope made science history when it captured the first image of the supermassive black hole in the galaxy M87. New research suggests alternative explanations for the massive compact object at the centre of this galaxy questioning if this could contain gravitomagnetic monopole.

The Event Horizon Telescope (EHT) has recently mapped the central compact object of the galaxy M87 with an unprecedented angular resolution. Though the remarkable breakthrough has been interpreted based on theory that M87 contains a rotating or “Kerr” black hole. New research published in EPJ C by Chandrachur Chakraborty and Qingjuan Yu at the Kavli Institute for Astronomy and Astrophysics, Peking University (KIAA-PKU), Masoumeh Ghasemi-Nodehi and Youjun Lu, at the National Astronomical Observatories of China, looks at possible alternative explanations for the image.

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Editors-in-Chief
S. Giorgio and D. Jacob
ISSN (Print Edition): 1286-0042
ISSN (Electronic Edition): 1286-0050

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