Results 121 to 130 of about 153,461 (336)

Strong-Weak Coupling Duality in Four Dimensional String Theory [PDF]

open access: yes, 1994
We present several pieces of evidence for strong-weak coupling duality symmetry in the heterotic string theory, compactified on a six dimensional torus.
Sen, Ashoke
core   +3 more sources

Duality in string cosmology

open access: yes, 2008
6 pages, no figures, latex2e using ltwol2e.sty. Based on talks at the 44'th annual meeting of the Israel Physical Society, Apr 8, 1998, Rehovot, Israel, and ICHEP98, 23-29 July, Vancouver, BC, Canada, and second conf. on Quantum Aspects of Gauge Theories, Supersymmetry and Unification, Sept 21-26, 1998, Corfu, Greece.
openaire   +3 more sources

The Bioengineering of Microspheric Skin Organoids and Their Application in Drug Screening

open access: yesAdvanced Science, EarlyView.
A novel method for the preparation of uniform microspheric skin organoids via spinning bioreactors is developed. The organoid consists of a core‐shell structure to mimic the bilayered skin structure with the epidermis on the surface. For efficient drug screening, the organoid is equipped with a luciferase reporter to detect canonical Wnt signaling, and
Jundong Xie   +5 more
wiley   +1 more source

Aquatic‐Terrestrial Insecticide Fluxes: Midges as Neonicotinoid Vectors

open access: yesEnvironmental Toxicology and Chemistry, Volume 42, Issue 1, Page 60-70, January 2023., 2023
Abstract Exposure of freshwater ecosystems to insecticides can negatively impact the development of emerging aquatic insects. These insects serve as an important nutritional subsidy for terrestrial insectivores. Changes in insect emergence phenology (i.e., emergence success and temporal pattern) or fluxes of insecticides retained by the emerging adults
Alexis P. Roodt   +2 more
wiley   +1 more source

O(D, D) gauge fields in the T-dual string Lagrangian

open access: yesJournal of High Energy Physics, 2019
We present the string Lagrangian with manifest T-duality. Not only zero-modes but also all string modes are doubled. The gravitational field is an O(D, D) gauge field.
Machiko Hatsuda, Warren Siegel
doaj   +1 more source

The Dual Faces of String Theory [PDF]

open access: yesarXiv, 1993
Duality symmetries for strings moving in non-trivial spacetime backgrounds are analysed. It is shown that, for backgrounds generated from compact WZW and coset models, such duality symmetries are exact to all orders in string perturbation theory. A global treatment of duality symmetries is given, by associating them to the known symmetries of affine ...
arxiv  

String Theory Dynamics In Various Dimensions [PDF]

open access: yes, 1995
The strong coupling dynamics of string theories in dimension $d\geq 4$ are studied. It is argued, among other things, that eleven-dimensional supergravity arises as a low energy limit of the ten-dimensional Type IIA superstring, and that a recently ...
Bars   +29 more
core   +3 more sources

String duality and modular forms [PDF]

open access: yesPhysics Letters B, 1997
Tests of duality between heterotic strings on $K3\times T^2$ (restricted on certain Narain moduli subspaces) and type IIA strings on K3-fibered Calabi-Yau threefolds are attempted in the weak coupling regime on the heterotic side by identifying pertinent modular forms related to the computations of string threshold corrections. Concretely we discuss in
openaire   +3 more sources

A Novel Dual‐Network Approach for Real‐Time Liveweight Estimation in Precision Livestock Management

open access: yesAdvanced Science, EarlyView.
A novel dual‐network framework is proposed for real‐time, non‐contact liveweight estimation of pigs. By extracting contour information instead of segmented images, the method achieves high accuracy (R2 = 0.993) and an exceptional speed of 1131.6 FPS. This approach enhances automation in livestock farming, providing a scalable and efficient solution for
Ximing Dong   +6 more
wiley   +1 more source

One-loop monodromy relations on single cuts

open access: yesJournal of High Energy Physics, 2017
The discovery of colour-kinematic duality has led to significant progress in the computation of scattering amplitudes in quantum field theories. At tree level, the origin of the duality can be traced back to the monodromies of open-string amplitudes ...
Alexander Ochirov   +2 more
doaj   +1 more source

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