Results 141 to 150 of about 153,461 (336)
Duality Symmetries and Topology Change in String Theory [PDF]
arXiv, 1993 Duality symmetries for strings moving in non-trivial spacetime backgrounds are analysed. It is shown that for backgrounds generated from WZW and coset CFT models such duality symmetries are exact to all orders in string perturbation theory. Their implications for string dynamics in non-trivial/singular spacetimes are discussed.
arxiv
K3 surfaces and string duality [PDF]
Surveys in Differential Geometry, 1999 109 pages, LaTeX 2.09, 11 figures, TASI96(K3), volume parameter ...
openaire +3 more sources
Real‐Time Self‐Optimization of Quantum Dot Laser Emissions During Machine Learning‐Assisted Epitaxy
Advanced Science, EarlyView.This work presents a machine learning‐driven approach integrated with in situ high‐energy electron diffraction (RHEED) monitoring to automate the optimization of quantum dot (QD) growth for lasers. A 3.2‐fold increase in photoluminescence intensity is achieved alongside a narrow spectral linewidth.
Chao Shen +13 more
wiley +1 more source
Journal of Applied Toxicology, Volume 43, Issue 1, Page 186-194, January 2023., 2023 Abstract Uncertainty factors (UFs) are used to account for uncertainties and variability when setting exposure limits or guidance values. Starting from a proposal of a single UF of 100 to extrapolate from an animal NOAEL to a human acceptable exposure, the aspects of uncertainty and number of UFs have diversified and today there are several risk ...
Gunnar Johanson +2 more
wiley +1 more source
Agribusiness, EarlyView.ABSTRACT Using a lab‐in‐the‐field experiment, we investigate how providing information about food miles and pesticide residue influences willingness to pay (WTP) for potatoes among 407 shoppers in Taiwan, split between a supermarket and a farmers market.
Chiu‐Lin Huang +3 more
wiley +1 more source
World-Sheet String Duality and the Hidden Supersymmetry [PDF]
, 2001 It is reviewed how space-time supersymmetry is realized nonlinearly in open superstring theory without making the GSO projection. We show that the world-sheet string dualities, viz. dualities of open-closed strings and of open-open strings, play crucial roles for the existence of 10 dimensional N=2 supersymmetry in a spontaneously broken phase. We also
arxiv +1 more source
Journal of Magnetic Resonance Imaging, Volume 57, Issue 1, Page 97-110, January 2023., 2023 Background Breast cancer response to neoadjuvant chemotherapy (NAC) is typically evaluated through the assessment of tumor size reduction after a few cycles of NAC. In case of treatment ineffectiveness, this results in the patient suffering potentially severe secondary effects without achieving any actual benefit. Purpose To identify patients achieving
Marco Caballo +5 more
wiley +1 more source
Journal of High Energy PhysicsWe derive and test a novel holographic duality in the B-model topological string theory. The duality relates the B-model on certain Calabi-Yau three-folds to two-dimensional chiral algebras defined as gauged βγ systems. The duality conjecturally captures
Kevin Costello, Davide Gaiotto
doaj +1 more source
Cusp anomalous dimension and rotating open strings in AdS/CFT
Journal of High Energy Physics, 2018 In the context of AdS/CFT we provide analytical support for the proposed duality between a Wilson loop with a cusp, the cusp anomalous dimension, and the meson model constructed from a rotating open string with high angular momentum.
R. Espíndola, J. Antonio García
doaj +1 more source
Topological holography: The example of the D2-D4 brane system
SciPost Physics, 2020 We propose a toy model for holographic duality. The model is constructed by embedding a stack of $N$ D2-branes and $K$ D4-branes (with one dimensional intersection) in a 6D topological string theory. The world-volume theory on the D2-branes (resp.
Nafiz Ishtiaque, Seyed Faroogh Moosavian, Yehao Zhou
doaj +1 more source