2018 Impact factor 1.660
Special Topics

EPJ ST Special Issue: The Accelerating Universe – Evidence and Theories

The idea of a cosmological constant which produces an accelerated universe has seen many ups and downs ever since it was introduced and then disowned by Einstein. A firm evidence of that our universe is accelerating came from the Luminosity vs redshift measurement of Type-I supernova by Riess eta al and Perlmutter et al in 1999 a discovery which earned them a Nobel prize in 2011. The recent examinations of supernova data however shows that not all is well with the standard LambdaCDM model of cosmology. The supernova evidence indicates that the cosmic acceleration is not isotropic which raises questions on our standard cosmological models that the universe is described by the Friedmann-Lemaitre-Robertson-Walker metric with small perturbations which were generated in a earlier epoch of accelerated expansion called Inflation. Apart from the supernova data the examination of data from large scale galaxy distribution and cosmic microwave anisotropy observations show that there are problems with the six-parameter ΛCDM model. The amplitude of the matter mower spectrum determined by the parameter called σ8 and Hubble expansion rate H0 show discrepancies between the determination from LSS observations and their determination from CMB. The resolution of these discrepancies my lie in the evolution of dark energy in time which then requires a well motivated model.

This EPJST issue will aim at surveying the evidence for dark energy from the latest supernovae data as well as data from CMB and LSS. The dark energy models lay open a long standing series of theoretical problems like why the vacuum fluctuations predicted from particle physics models are smaller than the observed cosmological constant by 120 orders of magnitude and the “why now” problem - why is the constant vacuum energy of similar magnitude as the matter density which changed rapidly throughout the past history of the universe. In this EPJST issue there will be contributions which survey the theories of dark energy from quantum field theory, modified gravity to supergravity and string theory. This EPJST issue will survey the recent results from observational cosmology and theoretical ideas of which aim to explain these observations.

The Guest Editors invite authors to submit their original research and short reviews on the theme of this special issue. Articles can have the following four different formats: Minireview (10-15 pages), Tutorial Review: (15+ pages), and Original Papers (typical, 5-10 pages) or (short, 3-5 pages), for further information see Instructions for Authors. Manuscripts should be prepared using the latex template of EPJ ST, which can be downloaded here. Articles should be submitted to the Editorial Office of EPJ ST via the submission system at https://articlestatus.edpsciences.org/is/epjst/home.php by selecting "The Accelerating Universe – Evidence and Theories".

Submission Deadline: 30 November 2020

We are looking forward to your contributions.

B. Ananthanarayan, Centre for High Energy Physics, Indian Institute of Science, Bangalore, India, This email address is being protected from spambots. You need JavaScript enabled to view it.
Subhendra Mohanty, Theory Division, Physical Research Laboratory, Ahmedabad, India, This email address is being protected from spambots. You need JavaScript enabled to view it.

EPJ ST Special Issue: Breakthrough optics- and complex systems-based technologies of modulation of drainage and clearing functions of the brain

Aims and Goals

There is intensive grow body of evidance that the lymphatics plays an crucial role in the keeping the health of the central nervous system (CNS) via the drainage of CNS tissues and clearance of metabolites and neurotoxins. The ability to stimulate the lymph flow in the sleeping brain is likely to play an important role in developing innovative methods in neurorehabilitation therapy. However, the scanty information available about the mechanisms of lymphatic clearance of waste products and toxins from the brain slows down progress in the appearance of technologies for therapeutic modulations of the lymphatics in the CNS.

This special issue is focused on the development and application of modern approaches from photonics and complex systems science to design promising strategies in stimulation of the cerebral lymphatics and development of breakthrough technologies for non-invasive and real time analysis of brain drainage and clearing functions. We strongly believe that this pioneering step will motivate researchers and industrial parners to create the novel promising devices for neurorehabilitaion medicine based on the stimulation of cerebral lymphatic functions.

The scope of the current special issue covers lymphatic-related topics that includes, but not limited:

  • Lymphatics of the Central Nervous System, Head and Neck Lymphatics
  • Sleep as natural factor for activation of the brain fluid drainage
  • Biophysics of lymphatic transport
  • Multi-modal technologies
  • Nonlinear time series and machine learning methods
  • Modeling of sleep wake transitions, of sleep stages and sleep wake mechanisms
  • Computational blood/lymph flow models and lymph flow patterns
  • Theoretical models of contractile waves in a multi-lymphangion vessel networks
  • Modulations of the cerebral lymphatic functions
  • Transcranial optical, electrical, and magnetic stimulation of lymphatics

Authors are invited to submit their original research and short reviews on the theme of this special issue. Manuscripts should be prepared following the instructions for authors using the latex template of EPJ ST, which can be downloaded here. Articles should be submitted to the Editorial Office of EPJ ST via the submission system at https://articlestatus.edpsciences.org/is/epjst/home.php by selecting “Breakthrough optics- and complex systems-based technologies of modulation of drainage and clearing functions of the brain” as special issue.

Submission Deadline: September 30, 2020.

A pdf of this Call for Papers can be downloaded here

We are looking forward to your contributions.

Guest Editors:

Jürgen Kurths
Physics Department, Humboldt University, Berlin, Germany
Potsdam Institute for Climate Impact Research, Potsdam, Germany
Saratov State University, Saratov, Russia
E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Thomas Penzel
Sleep Medicine Center, Charite University Hospital, Berlin, Germany
Saratov State University, Saratov, Russia
E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Valery V. Tuchin
Saratov State University, Saratov, Russia
Tomsk State University, Tomsk, Russia
Institute of Precision Mechanics and Control of the RAS, Saratov, Russia
Research Center of Biotechnology of the RAS, Moscow, Russia
E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Teemu Myllylä
University of Oulu, Oulu, Finland
E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Ruikang (Ricky) K Wang
University of Washington, Seattle
E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Oxana Semyachkina-Glushkovskaya
Saratov State University, Saratov, Russia
E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Open Access: EPJST is a hybrid journal offering Open Access publication via the Open Choice programme Open Choice programme and a growing number of Springer Compact “Publish and Read” arrangements which enable authors to publish OA at no direct cost (all costs are paid centrally).

EPJ ST Special Issue: Modeling, Machine Learning and Astronomy

Theory of machine learning, deep learning in particular has been witnessing an implosion lately in deciphering the “black-box approaches”. Optimizing deep neural networks is largely thought to be an empirical process, requiring manual tuning of several parameters. Drawing insights into these parameters gained much attention lately. The special issue aims to focus on gaining theoretical insights in the computation and setting of these parameters and solicits original work reflecting the influence of such theoretical framework on experimental results on standard datasets and architectures. It also aims to garner valuable talking points from optimization studies, another aspect of deep learning architectures and experiments. It is in this spirit that the guest editors wish to bridge metaheuristic optimization methods with deep neural networks and solicit papers that focus on exploring alternatives to gradient descent/ascent types methods. Papers with theoretical insights and proofs are particularly sought after, with or without limited experimental validation. The guest editors would welcome cutting-edge research on aspects of deep learning theory used in the fields of artificial intelligence, statistics and data science, theoretical and numerical optimization.

Habitability outside the solar system is an intriguing topic and center of focused research for at least a decade now. Coupled with this, there are advances in the fields of Artificial Life and Complex Adaptive Systems aiming to understand and synthesize life-like systems. The special issue should bring together material understanding design diversity, complexity, and adaptability of life and their rapid influence in areas of engineering and the Sciences. The guest editors wish to solicit ideas from nature and their generalizations from life and their translations into engineering and science.

Data is at the heart of this. Astronomy is a fascinating case study as it had embraced big data embellished by many sky-surveys. The variety and complexity of the data sets at different wavelengths, cadences etc. imply that modeling, computational intelligence methods and machine learning need to be exploited to understand astronomy. The importance of data driven discovery in Astronomy has given birth to an exciting new field known as astroinformatics. The inter-disciplinary study brings together machine learning theorists, astronomers, mathematicians and computer scientists underpinning the importance of machine learning algorithms and data analytic techniques.

The special issue aims to set a unique ground as an amalgamation of the diverse ideas and techniques while staying true to the baseline. The guest editors expect to discuss new developments in modeling, machine learning, design of complex computer experiments and data analytic techniques which can be used in areas beyond astronomical data analysis. Given the horizontal nature of the issue, they hope to disseminate methods that are area-agnostic but currently of interest to the broad community of science and engineering.

Topics of interest include, but are not limited to:

  • Exoplanets (discovery, machine classification etc.)
  • Unsupervised, semi-supervised, and supervised representation learning
  • Representation learning for reinforcement learning
  • Metric learning and kernel learning
  • Deep learning in astronomy
  • MCMC on big data
  • Statistical Machine Learning
  • Bayesian Methods in Astronomy
  • Meta-heuristic and Evolutionary Clustering methods and applications in Astronomy
  • Optimization methods
  • Swarm intelligence
  • Multi-objective optimization
  • Dynamical Systems and Complexity
  • Information-Theoretic Methods in Life-like Systems
  • Predictive Methods for Complex Adaptive Systems and Life-like Systems
  • Gravitational Wave Astronomy

Note to Authors: Proof of concept papers, applied on toy data sets are welcome as long as the theory and models are solid. Papers with applications in random area of Engineering or Science, would be “desk-rejected”. Application in Astronomy is a requirement. The submission and review process follow (strict) single blind protocol.

The contributions are solicited in the following categories:

1. Tutorial/Introductory papers on Foundations, such as Statistics, Machine Learning, Optimization, Numerical Approximation. This is by invitation ONLY.
2. Original Research papers in AstroStatistics and AstroInformatics.

The idea is to provide a primer on the basics and advanced research in the area.

The guest editors invite authors to submit their original research and short reviews on the theme of this special issue. Manuscripts should be prepared following the instructions for authors using the latex template of EPJ ST, which can be downloaded here. Articles should be submitted to the Editorial Office of EPJ ST via the submission system at https://articlestatus.edpsciences.org/is/epjst/home.php by selecting "Modeling, Machine Learning and Astronomy" as special issue

not later than 30 November 2020.

Guest Editors:

Snehanshu Saha, CS&IS and Anuradha and Prashanth Palakurthi Centre for Artificial Intelligence Research (APPCAIR), BITS PILANI K K Birla Goa Campus, This email address is being protected from spambots. You need JavaScript enabled to view it.

Nithin Nagaraj, Consciousness Studies Programme, National Institute of Advanced Studies (NIAS), Indian Institute of Science Campus, This email address is being protected from spambots. You need JavaScript enabled to view it.

EPJ ST Special Issue: Non-equilibrium phase transitions in heterogeneous systems: biophysical aspects

This special issue is devoted to the problems of experimental and theoretical studies, as well as computer simulations of physical features of structural and phase transitions in various biological systems (blood, cell cultures, biogels, metastable bioliquids) involved in external macroscopically non-equilibrium processes (hydrodynamic flows; alternating magnetic and electrical fields, stochastic forcing, etc.). Special attention is focused on a detailed study of internal transformations on macroscopic physical properties and the behavior of the systems under study.

The special issue will be devoted to the following problems:

1. Phase condensations of ensembles of magnetic nanoparticles, suspended in blood and other biological liquids, induced by alternating and rotating magnetic fields as well as by circulating hydrodynamic flows of the ferrofluids, provoked by the rotating particles and bulk nuclei of the dense phases. The effect of the nuclei rotation, as well as the influence of hydrodynamic flows on the phase transitions, will be in focus of the papers. The main aim of these works is to develop the scientific background of new methods of addressed drug delivery in-vivo to the places of blood vessel thrombosis.

2. Dynamic remagnetization and heat production in ensembles of magnetic nanoparticles under the action of alternating magnetic fields; the effect of the particle’s aggregation on the macroscopic magnetic and heat phenomena. The aim of works of this direction is the progress in the scientific background of the method of magnetic hyperthermia for therapy of cancer and other tumor diseases.

3. Field-induced deformations and internal structural transformations in biological polymer gels under the action of an external magnetic field. The aim of these works is the development of the scientific background for the technology of magnetic gel scaffolds for engineering and regeneration of biological tissues.

4. Phase transformations in metastable biological liquids (supersaturated solutions) connected with the evolution of crystallite assemblages. Special attention will be paid to such processes and phenomena as the nucleation, dissolution, and growth of elliptical crystallites, the influence of hydrodynamic flows and external impacts (e.g., heat and mass fluxes) on the dynamics of particulate assemblages. Such phenomena as Ostwald ripening, agglomeration and disintegration of particles or aggregates in conditions of macroscopic hydrodynamic flow and taking into account specifics of biological liquids will be in focus of these works.

5. Theoretical modeling of a ferrofluid flow in channels of variable cross-sections and the fluid local dynamic response to an external magnetic field. The aim of these works is to create a theoretical basis for detecting the local blood flow velocity in blood vessels to determine the degree of the vessels narrowing with stenotic plaques.

6. Various peculiarities of pattern formation in metastable and nonequilibrium media, blood flows, ferrofluids, cell cultures, biogels, as well as in other biological media during the phase transformations represent the research direction covered by the present theme issue.

Papers dealing with powerful computational methods and complex simulations with high-performance computer clusters in the aforementioned research directions are welcome.

This issue will be of interest to a wide range of specialists in biomaterials, bioengineering, and biophysics. The issue can become a convenient forum for discussing trends and achievements, to find new solutions and to strengthen the research collaborations.

The Guest Editors invite authors to submit their original research and short reviews on the theme of this special issue. Manuscripts should be prepared using the latex template of EPJ ST, which can be downloaded here. Articles should be submitted to the Editorial Office of EPJ ST via the submission system at https://articlestatus.edpsciences.org/is/epjst/home.php by selecting "Non-equilibrium phase transitions in heterogeneous systems: biophysical aspects" as special issue not later than 17 June 2020.

Guest editors:

Dmitri Alexandrov, Ural Federal University, Ekaterinburg, Russian Federation (This email address is being protected from spambots. You need JavaScript enabled to view it. ).

Andrey Zubarev, Ural Federal University, Ekaterinburg, Russian Federation (This email address is being protected from spambots. You need JavaScript enabled to view it. ).

For any queries, please contact Dmitri Alexandrov (This email address is being protected from spambots. You need JavaScript enabled to view it. ).

EPJ ST Special Issue: Intense laser-matter interaction in atoms, finite and condensed systems

Interaction of intense laser pulses with matter on various scales is a growing area of research using table-top femtosecond and sub-femtosecond laser pulses as well as large-scale free electron lasers spanning the photon energy range from the infrared to x-rays. The Nobel prize in Physics (2018) was awarded in part to the development of “light tools” or lasers delivering intense near-infrared laser pulses. This has burgeoned research in intense laser matter interaction to develop attosecond pulses in the soft x-ray region to super-intense pulses to generate relativistic plasmas. The large scale end of this research saw a concomitant development in accelerator based photon sources of intense short wavelength light pulses VUV, soft- and hard x-rays from free-electron laser pulses. This science has grown rapidly in the last few decades and calls for a review and a collection to gather its length and breadth.

The focus of this issue is to bring together the concepts, notions and prospects of the physics and processes often presented and viewed on separate and different length and size scales – atoms and molecules, finite nano- and micro-scale matter and extended systems in the condensed or fluid phases. The generation, metrology and manipulation of light pulses, the techniques to measure the effect and impact of these non-perturbative interactions in the laboratory and the computational methods and frameworks work hand-in-hand to advance this field of research and constantly push the envelope.

This issue encourages the submission of articles in one of the four different formats: Minireview (10-15 pages), Tutorial Review: (15+ pages), and Original Papers (typical, 5-10 pages) or (short, 3-5 pages), see also https://www.epj.org/index.php?option=com_content&view=article&id=408&Itemid=413&lang=en

As guest editors of this EPJ ST issue, we assist the EPJ ST board in compiling this issue and invite authors to submit their original research and short review articles for this collection of articles.

Manuscripts should be prepared using the latex template of EPJ ST, which can be downloaded here.

Articles should be submitted to the Editorial Office of EPJ ST via the submission system at https://articlestatus.edpsciences.org/is/epjst/home.php by selecting "Intense laser-matter interaction in atoms, finite and condensed systems" as a special issue not later than 31 December 2020.

We are looking forward to your contributions.

Sivarama Krishnan and Marcel Mudrich
(Guest Editors)

EPJ ST Special Issue: Strong Correlations in Dense Matter Physics

The 40th Max Born Symposium – Three Days on Strong Correlations in Dense Matter – was organized jointly by the Institute of Theoretical Physics (University of Wroclaw), the Helmholtz International Centre for FAIR, and the Polish Academy of Science, Wroclaw Branch. It had an interdisciplinary character, addressing the questions related with the phase structure of hot and dense matter determined by strong correlations such as bound states and condensates which are studied in the theory and phenomenological applications to thermonuclear fusion and heavy-ion collision experiments as well as (exo)planets, supernovae explosions, neutron stars, and their mergers.

The main attention was devoted to the formation and dissociation of strong correlations under extreme conditions of temperature, density, and strong fields, with special emphasis on deconfinement and chiral symmetry restoration, in particular also in the context of the conjectured quarkyonic matter hypothesis.

The talks presented during the Symposium were mainly concerned with

  • Hot and dense QCD matter theory: phase diagram, non-equilibrium phenomena, and equation of state,
  • Hadron and lepton pair production in heavy-ion collisions,
  • QCD phases in supernova collapse, compact stars and binary mergers,
  • Compact Ultra-Dense Objects (CUDOS),

and covered also other topics.

As guest editors of this EPJ ST issue, we assist the EPJ ST board in compiling this issue and invite authors to submit their original research and short review articles for this collection of articles in nuclear astrophysics. (Further details on the article types accepted for EPJST can be found here).

Manuscripts should be prepared using the latex template of EPJ ST, which can be downloaded here.

Articles should be submitted to the Editorial Office of EPJ ST via the submission system at https://articlestatus.edpsciences.org/is/epjst/home.php by selecting "Correlations in Dense Hadronic Matter" as a special issue not later than 31 May 2020.

We are looking forward to your contributions.

This email address is being protected from spambots. You need JavaScript enabled to view it. , This email address is being protected from spambots. You need JavaScript enabled to view it.
(Guest Editors)

EPJ ST Special Issue: Nuclear Astrophysics in Our Time: Supernovae, Neutron Stars and Binary Neutron Star Mergers

The understanding of the final journey of a massive star, after its nuclear fuel has been exhausted, is a fascinating problem because it involves all the forces of nature. The outcome of it may be a supernova explosion and the residue either be a neutron star or a black hole. This is a highly interdisciplinary area of research involving astrophysics, general relativity, nuclear physics and particle physics. The core collapse supernova (CCSN) explo- sion mechanism is being investigated over the past five decades or so. Still, the detailed theory of a successful supernova explosion is eluding us and a challenging problem. Equation of state of matter from low to high density and neutrino interactions with matter are important microphysics inputs in CCSN.

The spectacular discovery of the first neutron star merger event GW170817 in gravitational waves and across the electromagnetic spectrum resulted in plethora of information about the short gamma ray burst, binary chirp mass, tidal deformability, speed of gravitational waves and the Hubble constant. Furthermore it is manifestly evident that GW170817 is a shot in the arm for nuclear astrophysics communities around the world as dense matter equa- tion of state in neutron stars and heavy element synthesis through r-process nucleosynthesis in the ejected neutron rich matter could be probed.

This shows that the birth of neutron stars through supernova explosion mechanism to binary neutron star mergers is finely linked by various aspects of nuclear astrophysics. It is the linkage that will be explored in this issue of European Physical Journal on Special Topics (EPJST) .

As the editor of this EPJST issue, I assist the EPJST board in compiling this issue and invite authors to submit their original research and short review articles for this collection of articles in nuclear astrophysics. Articles should be submitted to the Editorial Office of EPJ ST via the submission system at https://articlestatus.edpsciences.org/is/epjst/home.php by selecting "Nuclear Astrophysics in Our Time: Supernovae, Neutron Stars and Binary Neutron Star Mergers" as special issue not later than

Submission Deadline: 30 March 2020

Manuscripts should be prepared using the latex template of EPJ ST, which can be downloaded here.

I look forward to your submission for this special issue.

Debades Bandyopadhyay, Guest Editor

EPJ ST Special Issue: Elko and Mass Dimension One Fermions

With the publication of Mass Dimension One Fermions (Cambridge Monographs on Mathematical Physics) by the Cambridge University Press in the mid 2019 the new fermions have enlarged the set of quantum fields available to a theoretical physicist. With this in mind European Physical Journal -- Special Topics has decided to publish a Special Issue on the subject of new fermions and related subjects. Interested physicists wishing to contribute to the special issue are invited to contact the guest editor, Prof. Dr. Dharam Vir Ahluwalia at This email address is being protected from spambots. You need JavaScript enabled to view it. .

Managing Editors
Anne Ruimy (EDP Sciences) and Sabine Lehr (Springer-Verlag)
Dear Sabine, Sandrine, and Nicolas, your professional and efficient management supported our editing tasks enormously and made the whole process smooth and pleasant. The web-based SAGA system was very helpful for handling the workflow. Thank you all for your high commitment!

Jan Freund, ICBM, University of Oldenburg, Germany

ISSN: 1951-6355 (Print Edition)
ISSN: 1951-6401 (Electronic Edition)

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