6 research outputs found
On Born's conjecture about optimal distribution of charges for an infinite ionic crystal
We study the problem for the optimal charge distribution on the sites of a
fixed Bravais lattice. In particular, we prove Born's conjecture about the
optimality of the rock-salt alternate distribution of charges on a cubic
lattice (and more generally on a d-dimensional orthorhombic lattice).
Furthermore, we study this problem on the two-dimensional triangular lattice
and we prove the optimality of a two-component honeycomb distribution of
charges. The results holds for a class of completely monotone interaction
potentials which includes Coulomb type interactions. In a more general setting,
we derive a connection between the optimal charge problem and a minimization
problem for the translated lattice theta function.Comment: 32 pages. 3 Figures. To appear in Journal of Nonlinear Science. DOI
:10.1007/s00332-018-9460-
A Century
This book was published on the occasion of celebration of 100 years of IACS in 1976. This is an important and enriched document to know the formative period and history of IACS. The coverage of this book had been classified into four distinct periods: 1. The Early Perid 2. The Period of Prof. C V Raman 3. The Period of Prof. K S Krishnan 4. Post Independence PeriodFinancial assistance was given from Govt. of India & Govt. of W.B. to the Steering Committee for the Centenary Celebration of IACS under Prof. D. Basu, Directo
Electron Thermal Runaway in Atmospheric Electrified Gases: a microscopic approach
Thesis elaborated from 2018 to 2023 at the Instituto de Astrofísica de Andalucía under the supervision of Alejandro Luque (Granada, Spain) and Nikolai Lehtinen (Bergen, Norway). This thesis presents a new database of atmospheric electron-molecule collision cross sections which was published separately under the DOI :
With this new database and a new super-electron management algorithm which significantly enhances high-energy electron statistics at previously unresolved ratios, the thesis explores general facets of the electron thermal runaway process relevant to atmospheric discharges under various conditions of the temperature and gas composition as can be encountered in the wake and formation of discharge channels
Understanding Quantum Technologies 2022
Understanding Quantum Technologies 2022 is a creative-commons ebook that
provides a unique 360 degrees overview of quantum technologies from science and
technology to geopolitical and societal issues. It covers quantum physics
history, quantum physics 101, gate-based quantum computing, quantum computing
engineering (including quantum error corrections and quantum computing
energetics), quantum computing hardware (all qubit types, including quantum
annealing and quantum simulation paradigms, history, science, research,
implementation and vendors), quantum enabling technologies (cryogenics, control
electronics, photonics, components fabs, raw materials), quantum computing
algorithms, software development tools and use cases, unconventional computing
(potential alternatives to quantum and classical computing), quantum
telecommunications and cryptography, quantum sensing, quantum technologies
around the world, quantum technologies societal impact and even quantum fake
sciences. The main audience are computer science engineers, developers and IT
specialists as well as quantum scientists and students who want to acquire a
global view of how quantum technologies work, and particularly quantum
computing. This version is an extensive update to the 2021 edition published in
October 2021.Comment: 1132 pages, 920 figures, Letter forma