scholarly journals Many Body Quantum Chaos

2020 ◽  
Vol 5 (2) ◽  
pp. 41
Author(s):  
Sandro Wimberger

This editorial remembers Shmuel Fishman, one of the founding fathers of the research field “quantum chaos”, and puts into context his contributions to the scientific community with respect to the twelve papers that form the special issue.

2020 ◽  
Vol 102 (6) ◽  
Author(s):  
Jan Šuntajs ◽  
Janez Bonča ◽  
Tomaž Prosen ◽  
Lev Vidmar
Keyword(s):  

2018 ◽  
Vol 10 (12) ◽  
pp. 4432 ◽  
Author(s):  
Katharina Helming ◽  
Katrin Daedlow ◽  
Bernd Hansjürgens ◽  
Thomas Koellner

The globally increasing demand for food, fiber, and bio-based products interferes with the ability of arable soils to perform their multiple functions and support sustainable development. Sustainable soil management under high production conditions means that soil functions contribute to ecosystem services and biodiversity, natural and economic resources are utilized efficiently, farming remains profitable, and production conditions adhere to ethical and health standards. Research in support of sustainable soil management requires an interdisciplinary approach to three interconnected challenges: (i) understanding the impacts of soil management on soil processes and soil functions; (ii) assessing the sustainability impacts of soil management, taking into account the heterogeneity of geophysical and socioeconomic conditions; and (iii) having a systemic understanding of the driving forces and constraints of farmers’ decision-making on soil management and how governance instruments may, interacting with other driving forces, steer sustainable soil management. The intention of this special issue is to take stock of an emerging interdisciplinary research field addressing the three challenges of sustainable soil management in various geographic settings. In this editorial, we summarize the contributions to the special issue and place them in the context of the state of the art. We conclude with an outline of future research needs.


2018 ◽  
Vol 45 (2) ◽  
pp. 359-383 ◽  
Author(s):  
B. Sebastian Reiche ◽  
Yih-teen Lee ◽  
David G. Allen

As organizations increasingly fulfill their customer needs by getting their work done globally, there is a pressing need for the scientific community to further advance knowledge on global work, especially in terms of how to better conceptualize and integrate it. A particular opportunity for such development involves the cross-fertilization between the international business (IB) and human resource management (HRM) literatures, which serve as the focal domains to study global work phenomena but have treated global work largely as separate research streams. We therefore edited a special issue to contribute to a more integrative understanding of various aspects of global work across both domains. In this opening article, we review existing research on global work in the multinational enterprise from both IB and HRM perspectives. Subsequently, we present a shared conceptualization of global work that helps integrate theoretical and empirical research in both fields. We then introduce the articles in this special issue, before developing an integrative agenda for future research on global work.


Quantum ◽  
2021 ◽  
Vol 5 ◽  
pp. 486
Author(s):  
Thomás Fogarty ◽  
Miguel Ángel García-March ◽  
Lea F. Santos ◽  
Nathan L. Harshman

Interacting quantum systems in the chaotic domain are at the core of various ongoing studies of many-body physics, ranging from the scrambling of quantum information to the onset of thermalization. We propose a minimum model for chaos that can be experimentally realized with cold atoms trapped in one-dimensional multi-well potentials. We explore the emergence of chaos as the number of particles is increased, starting with as few as two, and as the number of wells is increased, ranging from a double well to a multi-well Kronig-Penney-like system. In this way, we illuminate the narrow boundary between integrability and chaos in a highly tunable few-body system. We show that the competition between the particle interactions and the periodic structure of the confining potential reveals subtle indications of quantum chaos for 3 particles, while for 4 particles stronger signatures are seen. The analysis is performed for bosonic particles and could also be extended to distinguishable fermions.


2012 ◽  
Vol 12 (1) ◽  
pp. 1401-1418 ◽  
Author(s):  
K. Krüger ◽  
B. Quack

Abstract. This special issue provides an overview of scientific results from the TransBrom Sonne expedition in the tropical West Pacific, conducted during October 2009. The ship cruise was part of the national research project TransBrom Sonne, investigating very short lived bromine compounds in the ocean and their transport pathways into the stratosphere. For this purpose chemical and biological parameters were analysed in the ocean and the atmosphere, accompanied by intense meteorological measurements, to derive more insights in this multidisciplinary research field. This introduction paper presents the scientific goals and the meteorological and oceanographic background. The main research findings of the TransBrom Sonne expedition are highlighted.


Water ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 839 ◽  
Author(s):  
Jesús Rodrigo-Comino ◽  
José María Senciales-González ◽  
José Damián Ruiz-Sinoga

In this Special Issue, we have tried to include manuscripts about soil erosion and degradation processes and the accelerated rates due to hydrological processes and climate change. We considered that the main goal was successfully reached. The new research focused on measurements, modelling, and experiments under field or laboratory conditions developed at different scales (pedon, hillslope, and catchment) were submitted and published. This Special Issue received investigations from different parts of the world such as Ethiopia, Morocco, China, Iran, Italy, Portugal, Greece and Spain, among others. We are happy to see that all papers presented findings characterized as unconventional, provocative, innovative and methodologically new. We hope that the readers of the journal Water can enjoy and learn about hydrology and soil erosion using the published material, and share the results with the scientific community, policymakers and stakeholders new research to continue this amazing adventure, featuring plenty of issues and challenges.


Insects ◽  
2020 ◽  
Vol 11 (8) ◽  
pp. 480
Author(s):  
Hideyoshi Toyoda

The Special Issue ‘Insect physical control: electric field-based pest management approach’ was launched to showcase valuable new research on pest control using applied electrostatic engineering. Some phenomena generated in static and dynamic electric fields can be used to build new devices to capture or kill target insects using an attractive force or a force striking insects entering an electric field. This research field is new, and there are few researchers currently working within it. Consequently, this editorial introduces the history and general principles of electric field generation. I then discuss future directions for this field.


2020 ◽  
Vol 10 (9) ◽  
pp. 3172
Author(s):  
Diego Gragnaniello ◽  
Andrea Bottino ◽  
Sandro Cumani ◽  
Wonjoon Kim

Nowadays, deep learning is the fastest growing research field in machine learning and has a tremendous impact on a plethora of daily life applications, ranging from security and surveillance to autonomous driving, automatic indexing and retrieval of media content, text analysis, speech recognition, automatic translation, and many others [...]


2020 ◽  
Vol 1 (3) ◽  
pp. 357-370 ◽  
Author(s):  
Jens Schröter

AbstractIn the call for the special issue for the EAEPE Journal, we can find the word “scenario.” The question is if the authors can imagine scenarios in which “potential strategies for the appropriation of existing capitalist infrastructures […] in order to provoke the emergence of post-capitalist infrastructures” can be described. Obviously, the call verges on the border of science fiction—and this is not a bad thing. Diverse strands of media studies and science and technology studies have shown (e.g., Schröter 2004; Kirby 2010; Jasanoff and Kim 2015; McNeil et al. 2017) that not only the development of science and (media) technology is deeply interwoven in social imaginaries about possible outcomes and their implicated futures, but there is a whole theoretical tradition in which societies as such are fundamentally constituted by imaginary relations (Castoriadis 1975/2005). But in all these discussions, one notion very seldom appears: that of an “imaginary economy,” meaning a collectively held system of more or less vague or detailed ideas, what an economy is, how it works, and how it should be (especially in the future; but see the somewhat different usage recently in Fabbri 2018). The aim of the paper is to outline a notion of “imaginary economy” and its necessary functions in the stabilization of a given economy, but even more so in the transformation to another economy—how should a transformation take place if there’s not at least a vague image where to go? Of course, we could also imagine a blind evolutionary process without any imaginary process but that seems not to be the way in which human societies—and economies—work. Obviously a gigantic research field opens up—so in the proposed paper, only one type of “imaginary economy” can be analyzed: It is the field that formed recently around the proposed usages and functions of 3D printing. In publications as diverse as Eversmann (2014) and Rifkin (2014), the 3D printer operates as a technology that seems to open up a post-capitalist future—and thereby it is directly connected to the highly imaginary “replicator” from Star Trek. In these scenarios, a localized omnipotent production—a post-scarcity scenario (see Panayotakis 2011)—overcomes by itself capitalism: But symptomatically enough, questions of work, environment, and planetary computation are (mostly) absent from these scenarios. Who owns the templates for producing goods with 3D printers? What about the energy supply? In a critical and symptomatic reading, this imaginary economy, very present in a plethora of discourses nowadays, is deconstructed and possible implications for a post-capitalist construction are discussed.


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