Results 101 to 110 of about 18,697,974 (254)

Simple space-time symmetries in quantum field theory

, 2004
In this thesis a program to study quantum field theories with simple space-time symmetries is introduced. These symmetries are given by simple Lie groups which are required to act on the Hilbert space of states by unitary positive energy representations (
Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany), Riese, M. de, de Riese, Mathias   +2 more
core   +1 more source

All‐in‐One Analog AI Hardware: On‐Chip Training and Inference with Conductive‐Metal‐Oxide/HfOx ReRAM Devices

Advanced Functional Materials, EarlyView.
An all‐in‐one analog AI accelerator is presented, enabling on‐chip training, weight retention, and long‐term inference acceleration. It leverages a BEOL‐integrated CMO/HfOx ReRAM array with low‐voltage operation (<1.5 V), multi‐bit capability over 32 states, low programming noise (10 nS), and near‐ideal weight transfer.
Donato Francesco Falcone, Victoria Clerico, Wooseok Choi, Tommaso Stecconi, Folkert Horst, Laura Bégon‐Lours, Matteo Galetta, Antonio La Porta, Nikhil Garg, Fabien Alibart, Bert Jan Offrein, Valeria Bragaglia   +11 more
wiley   +1 more source

A minimal approach to the scattering of physical massless bosons

Journal of High Energy Physics, 2018
Tree and loop level scattering amplitudes which involve physical massless bosons are derived directly from physical constraints such as locality, symmetry and unitarity, bypassing path integral constructions.
Rutger H. Boels, Hui Luo
doaj   +1 more source

Hidden symmetries of the gravitational contact structure of the classical phase space of general relativistic test particle [PDF]

, 1984
summary:The phase space of general relativistic test particle is defined as the 1-jet space of motions. A Lorentzian metric defines the canonical contact structure on the odd-dimensional phase space.
Janyška Josef, Janyška, Josef, M. Crampin   +2 more
core   +1 more source

Printed Integrated Logic Circuits Based on Chitosan‐Gated Organic Transistors for Future Edible Systems

Advanced Functional Materials, EarlyView.
Edible electronics needs integrated logic circuits for computation and control. This work presents a potentially edible printed chitosan‐gated transistor with a design optimized for integration in circuits. Its implementation in integrated logic gates and circuits operating at low voltage (0.7 V) is demonstrated, as well as the compatibility with an ...
Giulia Coco, Valerio Francesco Annese, Valerio Galli, Ilaria Penna, Debora Russo, Marina Veronesi, Rita Scarpelli, Stefania Sabella, Mario Caironi   +8 more
wiley   +1 more source

Conformal field theory with periodic time

Journal of High Energy Physics
It is shown that time-ordered correlation functions of a unitary CFT2 in 2D Minkowski space admit a single-valued, conformally-invariant extension to the Lorentzian signature torus provided that the S 1 × S 1 spatial and temporal radii are equal.
Walker Melton, Andrew Strominger
doaj   +1 more source

Composites of Shellac and Silver Nanowires as Flexible, Biobased, and Corrosion‐Resistant Transparent Conductive Electrodes

Advanced Functional Materials, EarlyView.
Shellac, a centuries‐old natural resin, is reimagined as a green material for flexible electronics. When combined with silver nanowires, shellac films deliver transparency, conductivity, and stability against humidity. These results position shellac as a sustainable alternative to synthetic polymers for transparent conductors in next‐generation ...
Rahaf Nafez Hussein, Tiago Carneiro Gomes, Eliza Ng, Simon Rondeau‐Gagné, Tricia Breen Carmichael   +4 more
wiley   +1 more source

Logarithmic angle-dependent gauge transformations at null infinity

Journal of High Energy Physics
Logarithmic angle-dependent gauge transformations are symmetries of electromagnetism that are canonically conjugate to the standard O 1 $$ \mathcal{O}(1) $$ angle-dependent u(1) transformations. They were exhibited a few years ago at spatial infinity. In
Oscar Fuentealba, Marc Henneaux
doaj   +1 more source

Particle symmetries [PDF]

, 1965
Theory of fundamental particle symmetries derived from basic properties of space-time using principles of quantum mechanics and special ...
Zmuidzinas, J. S.
core  

Shift symmetries in (anti) de Sitter space

, 2019
We construct a class of extended shift symmetries for fields of all integer spins in de Sitter (dS) and anti-de Sitter (AdS) space. These generalize the shift symmetry, galileon symmetry, and special galileon symmetry of massless scalars in flat space to
Kurt Hinterbichler, James Bonifacio, Austin Joyce, Rachel A. Rosen   +3 more
core   +1 more source