Results 91 to 100 of about 458,083 (347)

Duality of string amplitudes in a curved background

open access: yes, 1992
We initiate a program to study the relationship between the target space, the spectrum and the scattering amplitudes in string theory. We consider scattering amplitudes following from string theory and quantum field theory on a curved target space, which
Henningson, Måns
core   +1 more source

String Field Theory

open access: yes, 2006
This article is a concise review of covariant string field theory prepared for the Encyclopedia of Mathematical Physics, Elsevier (2006). Referencing follows the publisher's guidelines.
openaire   +2 more sources

Fluid Shear‐Controlled Pro/Anti‐Inflammatory Osteomodulatory Construct for Drug‐Free Immune Activation Through Cationic Ion Channel Activation

open access: yesAdvanced Healthcare Materials, EarlyView.
A 3D‐printed PCL scaffold coated with Arginine was laminated with electrospun polyvinyl alcohol (PVA) nanofibers containing cationic cellulose nanocrystals (PVA@cCNC). This created nanoisland‐like regions of aligned and random cCNC‐rich fibers. The composite scaffold, under fluid shear stimulation, modulated macrophage polarization from M1 to M2 ...
Keya Ganguly   +8 more
wiley   +1 more source

Topological defects in open string field theory

open access: yesJournal of High Energy Physics, 2018
We show how conformal field theory topological defects can relate solutions of open string field theory for different boundary conditions. To this end we generalize the results of Graham and Watts to include the action of defects on boundary condition ...
Toshiko Kojita   +3 more
doaj   +1 more source

Perturbative string theory from Newtonian limit of string geometry theory

open access: yesEuropean Physical Journal C: Particles and Fields, 2020
String geometry theory is one of the candidates of the non-perturbative formulation of string theory. In Sato (Int J Mod Phys A 34(23):1950126, 2019), the perturbative string theory is reproduced from a string geometry model coupled with a u(1) gauge ...
Matsuo Sato, Yuji Sugimoto
doaj   +1 more source

Closed String Cohomology in Open String Field Theory

open access: yes, 2010
We show that closed string states in bosonic string field theory are encoded in the cyclic cohomology of cubic open string field theory (OSFT) which, in turn, classifies the deformations of OSFT.
Moeller, Nicolas, Sachs, Ivo
core   +1 more source

Molecular Mechanisms of Extracellular Vesicle Biogenesis and Their Impact on the Design of Custom EVs

open access: yesAdvanced Healthcare Materials, EarlyView.
Extracellular vesicles (EVs) are pivotal mediators of intercellular communication and disease, yet the fundamental mechanisms controlling their biogenesis and cargo selection remain unclear. This limitation hinders their diagnostic utility and therapeutic development.
Luís Carvalho Ferraz   +2 more
wiley   +1 more source

A matrix model from string field theory

open access: yesFrontiers in Physics, 2016
We demonstrate that a Hermitian matrix model can be derived from level truncated open string field theory with Chan-Paton factors. The Hermitian matrix is coupled with a scalar and U(N) vectors which are responsible for the D-brane at the tachyon vacuum.
Syoji Zeze
doaj   +1 more source

Normalization of D-instanton amplitudes

open access: yesJournal of High Energy Physics, 2021
D-instanton amplitudes suffer from various infrared divergences associated with tachyonic or massless open string modes, leading to ambiguous contribution to string amplitudes.
Ashoke Sen
doaj   +1 more source

Tadpoles and Closed String Backgrounds in Open String Field Theory [PDF]

open access: yes, 2003
We investigate the quantum structure of Witten's cubic open bosonic string field theory by computing the one-loop contribution to the open string tadpole using both oscillator and conformal field theory methods.
Ellwood, Ian   +2 more
core   +1 more source

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