Results 91 to 100 of about 475,776 (345)

Perturbative string theory from Newtonian limit of string geometry theory

European 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

D-brane effective field theory from string field theory

, 2000
Open string field theory is considered as a tool for deriving the effective action for the massless or tachyonic fields living on D-branes. Some simple calculations are performed in open bosonic string field theory which validate this approach. The level
Andreev, Bain, Banks, Bardakci, Berkooz, Berkovits, Berkovits, Bogojevic, Chepelev, Cremmer, Douglas, Gaberdiel, Gava, Gross, Gross, Gross, Hashimoto, Hashimoto, Horava, Kabat, Kitazawa, Kostelecky, Kostelecky, Kostelecky, Leclair, Leigh, Myers, Okawa, Preitschopf, Samuel, Scherk, Sen, Sen, Sen, Taylor, Taylor, Troost, Tseytlin, Tseytlin, Tseytlin, van Baal, Washington Taylor, Wendt, Witten, Witten, Witten, Zwiebach   +46 more
core   +1 more source

Universality of the Tachyon Potential [PDF]

, 1999
Using string field theory, we argue that the tachyon potential on a D-brane anti-D-brane system in type II string theory in arbitrary background has a universal form, independent of the boundary conformal field theory describing the brane.
Sen, Ashoke
core   +4 more sources

Growth Hormone‐Loaded 3D Printed Silk Fibroin‐Cellulose Dressings for Ischemic Wounds

Advanced Healthcare Materials, EarlyView.
3D‐printed wound dressings combining carboxymethyl cellulose, silk fibroin, and growth hormone accelerate healing in diabetic ulcers. These bioactive, customizable dressings enhance angiogenesis, cellular proliferation, and immune modulation. Proteomic analysis reveals activation of regenerative pathways and reduced fibrosis, highlighting their ...
Maria Pita‐Vilar, Diego Caicedo‐Valdés, Susana B. Bravo, Isabel Rodriguez‐Moldes, Salvador D. Aznar‐Cervantes, Angel Concheiro, Carmen Alvarez‐Lorenzo, Luis Diaz‐Gomez   +7 more
wiley   +1 more source

A matrix model from string field theory

Frontiers 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

Journal 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

Dynamical String Tension in String Theory with Spacetime Weyl Invariance

, 2014
The fundamental string length, which is an essential part of string theory, explicitly breaks scale invariance. However, in field theory we demonstrated recently that the gravitational constant, which is directly related to the string length, can be ...
Bars, Itzhak, Steinhardt, Paul, Turok, Neil   +2 more
core   +1 more source

U(1) gauge invariance from open string field theory [PDF]

, 2000
The naive low energy effective action of the tachyon and the U(1) gauge field obtained from string field theory does not correspond to the world volume action of unstable branes in bosonic string theory.
David, Justin R.
core   +2 more sources

Lattice String Field Theory [PDF]

Proceedings of The XXVIII International Symposium on Lattice Field Theory — PoS(Lattice 2010), 2011
7 pages, 2 figures. To appear in the Proceedings of the XXVIIIth International Symposium on Lattice Field Theory (Lattice 2010), Villasimius, Italy, June 14-19 ...
Bursa, Francis, Kroyter, Michael
openaire   +2 more sources

Beyond Presumptions: Toward Mechanistic Clarity in Metal‐Free Carbon Catalysts for Electrochemical H2O2 Production via Data Science

Advanced Materials, EarlyView.
Metal‐free carbon catalysts enable the sustainable synthesis of hydrogen peroxide via two‐electron oxygen reduction; however, active site complexity continues to hinder reliable interpretation. This review critiques correlation‐based approaches and highlights the importance of orthogonal experimental designs, standardized catalyst passports ...
Dayu Zhu, Hsi‐wen Wu, Xiao Wang, Jie Zhang   +3 more
wiley   +1 more source