Applications of density matrix in the fractional quantum mechanics

The many-body space fractional quantum system is studied using the density matrix method. We give the new results of the Thomas-Fermi model, and obtain the quantum pressure of the free electron gas. We also show the validity of the Hohenberg-Kohn theory in the space fractional quantum mechanics and generalize the density functional theory to the fractional quantum mechanics.Comment: 1 figur

HELIN Task Force on Electronic Archiving Report

Report of the HELIN Electronic Archiving Task Force, appointed from the HELIN Serials Committee and the HELIN Collection Development Committee

EIFL and Library Group Comments on Updated Draft WIPO CMO Toolkit (2021)

EIFL and partner organizations in the library, archives and museum communities responded to a public consultation to provide additional comments on the updated draft WIPO Good Practice Toolkit for Collective Management Organizations (CMOs), released on 27 May 2021. Publication of the updated draft Toolkit follows an earlier consultation that took place in April 2021. The updated version of the Toolkit contains an expanded section on supervision and monitoring of CMOs (Section 13). We noted three concerns in the updated Section 13, in particular. In our comments, we propose a number of amendments to address the concerns in Section 13, along with suggestions in other parts of the text to provide clarifications or to iron out ambiguities. The final, updated version of the CMO Toolkit will be published at the end of September 2021. The additional were submitted to WIPO together with the Canadian Federation of Library Associations (CFLA), the International Council of Archives (ICA), the International Council of Museums (ICOM), the International Federation of Library Associations and Institutions (IFLA), and the Society of American Archivists (SAA)

SelectedWorks User Guide

Guide provides instructions for new and existing users of SelectedWorks, a companion product of eCommons designed to collect an author\u27s scholarly work in one location from many different collections in the Digital Commons network

Statements to the WIPO Standing Committee on Committee on Copyright and Related Rights

As an NGO accredited with permanent observer status at WIPO, EIFL has the opportunity to make interventions at sessions of WIPO committees and meetings EIFL advocates at the World Intellectual Property Organization (WIPO) for an international copyright framework that benefits libraries in developing and transition economy countries. We participate in sessions of WIPO’s Standing Committee on Copyright and Related Rights (SCCR) that usually meets in Geneva twice a year. Due to the COVID-19 pandemic, just one SCCR took place in 2021, in hybrid mode (online for observers and limited physical participation for member state delegates). We work with Member States and the WIPO Secretariat to increase understanding of library copyright issues in the digital environment and to encourage support for international copyright law reform. We also participate from time to time in other WIPO meetings, such as the annual WIPO Assemblies, and we cooperate with other NGOs on areas of common interest

BerkeleyGW: A Massively Parallel Computer Package for the Calculation of the Quasiparticle and Optical Properties of Materials and Nanostructures

BerkeleyGW is a massively parallel computational package for electron excited-state properties that is based on the many-body perturbation theory employing the ab initio GW and GW plus Bethe-Salpeter equation methodology. It can be used in conjunction with many density-functional theory codes for ground-state properties, including PARATEC, PARSEC, Quantum ESPRESSO, OCTOPUS and SIESTA. The package can be used to compute the electronic and optical properties of a wide variety of material systems from bulk semiconductors and metals to nanostructured materials and molecules. The package scales to 10,000's of CPUs and can be used to study systems containing up to 100's of atoms

Mode-coupling and nonlinear Landau damping effects in auroral Farley-Buneman turbulence

The fundamental problem of Farley-Buneman turbulence in the auroral $E$-region has been discussed and debated extensively in the past two decades. In the present paper we intend to clarify the different steps that the auroral $E$-region plasma has to undergo before reaching a steady state. The mode-coupling calculation, for Farley-Buneman turbulence, is developed in order to place it in perspective and to estimate its magnitude relative to the anomalous effects which arise through the nonlinear wave-particle interaction. This nonlinear effect, known as nonlinear ``Landau damping'' is due to the coupling of waves which produces other waves which in turn lose energy to the bulk of the particles by Landau damping. This leads to a decay of the wave energy and consequently a heating of the plasma. An equation governing the evolution of the field spectrum is derived and a physical interpration for each of its terms is provided

Integrable flows and Backlund transformations on extended Stiefel varieties with application to the Euler top on the Lie group SO(3)

We show that the $m$-dimensional Euler--Manakov top on $so^*(m)$ can be represented as a Poisson reduction of an integrable Hamiltonian system on a symplectic extended Stiefel variety $\bar{\cal V}(k,m)$, and present its Lax representation with a rational parameter. We also describe an integrable two-valued symplectic map $\cal B$ on the 4-dimensional variety ${\cal V}(2,3)$. The map admits two different reductions, namely, to the Lie group SO(3) and to the coalgebra $so^*(3)$. The first reduction provides a discretization of the motion of the classical Euler top in space and has a transparent geometric interpretation, which can be regarded as a discrete version of the celebrated Poinsot model of motion and which inherits some properties of another discrete system, the elliptic billiard. The reduction of $\cal B$ to $so^*(3)$ gives a new explicit discretization of the Euler top in the angular momentum space, which preserves first integrals of the continuous system.Comment: 18 pages, 1 Figur