We study the real-time dynamics of string breaking in quantum electrodynamics in one spatial dimension. A two-stage process with a clear separation of time and energy scales for the fermion-antifermion pair creation and subsequent charge separation leading to the screening of external charges is found. Going away from the traditional setup of external static charges, we establish the phenomenon of multiple string breaking by considering dynamical charges flying apart.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1103/PhysRevLett.111.201601 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
fragSMILES as a chemical string notation for advanced fragment and chirality representation.
Commun Chem
January 2025
Dipartimento di Farmacia-Scienze del Farmaco, Università degli Studi di Bari Aldo Moro, Bari, Italy.
Generative models have revolutionized de novo drug design, allowing to produce molecules on-demand with desired physicochemical and pharmacological properties. String based molecular representations, such as SMILES (Simplified Molecular Input Line Entry System) and SELFIES (Self-Referencing Embedded Strings), have played a pivotal role in the success of generative approaches, thanks to their capacity to encode atom- and bond- information and ease-of-generation. However, such 'atom-level' string representations could have certain limitations, in terms of capturing information on chirality, and synthetic accessibility of the corresponding designs.
View Article and Find Full Text PDFThe efficacy of topical 8% capsaicin patches for the treatment of postsurgical neuropathic pain: a systematic review.
Pain Manag
December 2024
Department of Medicine, Rowan School of Osteopathic Medicine, Stratford, NJ, USA.
Objective: To investigate the benefits of topical 8% capsaicin patches for the decrease of postsurgical neuropathic pain level and area.
Methods: A systematic review with pooled analysis was conducted utilizing the PRISMA 2020 guidelines. Five commonly used databases were employed utilizing a search string made from MeSH terms and boolean operators.
How do animals understand the physical world?
Curr Biol
October 2024
Institut de Neurociències, Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain.
The natural world is full of examples of animals interacting with their physical environment in surprising ways: capuchin monkeys crack open nuts with rocks; dolphins use sponges as 'gloves' on their rostra when searching for prey on the sea floor; and New Caledonian crows manufacture stick tools to pull grubs from logs (Figure 1). Deeper into the phylogenetic tree we continue to see interesting examples of behaviors of this kind, such as octopuses using coconut shells for protection, tuskfish breaking open cockles by hitting them against coral heads, and bees learning to pull string to gain out-of-reach food. These sophisticated behavioral interactions with their physical environment suggest that animals might have a deep understanding of their physical world at a cognitive level.
View Article and Find Full Text PDFUSP50 suppresses alternative RecQ helicase use and deleterious DNA2 activity during replication.
Nat Commun
September 2024
Birmingham Centre for Genome Biology and Institute of Cancer and Genomic Sciences, University of Birmingham, Birmingham, B15 2TT, UK.
Article Synopsis
- Mammalian DNA replication requires various helicases and nucleases for accurate genetic duplication, but the direction of these activities was previously unclear.
- The study identifies USP50 as a crucial chromatin-associated protein that aids in ongoing replication, fork restart, and telomere maintenance, while also preventing DNA breaks.
- USP50 works by ensuring the correct localization of other proteins like WRN and FEN1 during stalled replication, and its absence leads to increased activity of certain helicases and nucleases, causing replication issues and telomere instability.
Measurement method research of Chinese texts' difficulty based on two-characters continuations.
PLoS One
September 2024
Fujian Key Laboratory of Intelligent Machining Technology and Equipment, Fujian University of Technology, Fuzhou, Fujian, China.
Two-characters continuation, which is a string with two characters emerging in linear sequence, can break through the encapsulation and independence of long solidified language chunks (words and phrases). In this way, two-characters continuation can measure the information of not only static language units (words and phrases) but also their combination in the text. Therefore, two-characters continuation is used as a measurement unit for investigating Chinese text's difficulty, to enhance the accuracy of measuring text's difficulty.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!