Results 71 to 80 of about 469,891 (347)

Field Redefinitions, T-duality and Solutions in Closed String Field Theories

, 2006
We investigate classical solutions in closed bosonic string field theory and heterotic string field theory that are obtained order by order starting from solutions of the linearized equations of motion, and we discuss the ``field redefinitions'' which ...
C. Bachas, E. Coletti, H. Yang, J.G. Russo, J.R. David, N. Berkovits, Y. Okawa, Y. Okawa, Y. Okawa, Yoji Michishita   +9 more
core   +4 more sources

String field theory

, 2009
This elementary introduction to string field theory highlights the features and the limitations of this approach to quantum gravity as it is currently understood. String field theory is a formulation of string theory as a field theory in space-time with an infinite number of massive fields. Although existing constructions of string field theory require
openaire   +2 more sources

String amplitudes from Moyal string field theory [PDF]

Physical Review D, 2003
We illustrate a basic framework for analytic computations of Feynman graphs using the Moyal star formulation of string field theory. We present efficient methods of computation based on (a) the monoid algebra in noncommutative space and (b) the conventional Feynman rules in Fourier space.
Bars, I., Kishimoto, I., Matsuo, Y.
openaire   +3 more sources

Artificial Intelligence‐Driven Development in Rechargeable Battery Materials: Progress, Challenges, and Future Perspectives

Advanced Functional Materials, EarlyView.
AI is transforming the research paradigm of battery materials and reshaping the entire landscape of battery technology. This comprehensive review summarizes the cutting‐edge applications of AI in the advancement of battery materials, underscores the critical challenges faced in harnessing the full potential of AI, and proposes strategic guidance for ...
Qingyun Hu, Junyuan Lu, Jian Hui, Ziyuan Rao, Yang Ren, Hong Wang   +5 more
wiley   +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

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

, 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, Shelton, Jessie, Taylor, Washington   +2 more
core   +1 more source

Half-string oscillator approach to string field theory [PDF]

Nuclear Physics B, 1991
Abstract We give an operator formulation of the string field theory proposed by E. Witten using half-string oscillator modes. This formalism, identifying the physical string states as infinite matrices, is developed in such a way that interactions at the level of vertices can be calculated in terms of products and traces of these matrices without ...
Bordes, J, Chan, H, Nellen, L, Tsou, S
openaire   +2 more sources

Patterning the Void: Combining L‐Systems with Archimedean Tessellations as a Perspective for Tissue Engineering Scaffolds

Advanced Functional Materials, EarlyView.
This study introduces a novel multi‐scale scaffold design using L‐fractals arranged in Archimedean tessellations for tissue regeneration. Despite similar porosity, tiles display vastly different tensile responses (1–100 MPa) and deformation modes. In vitro experiments with hMSCs show geometry‐dependent growth and activity. Over 55 000 tile combinations
Maria Kalogeropoulou, Kenny A. van Kampen, Pierpaolo Fucile, Carlos Mota, Lorenzo Moroni   +4 more
wiley   +1 more source

Boundary modes in string field theory

Journal of High Energy Physics
We discuss the construction of boundary contributions to free string field theory actions in the context of the bosonic string. We show that it is generally possible to obtain a well-defined variational principle by adding a simple boundary term (which ...
Carlo Maccaferri, Riccardo Poletti, Alberto Ruffino, Jakub Vošmera   +3 more
doaj   +1 more source

BRST ghost-vertex operator in Witten's cubic open string field theory on multiple Dp-branes

Nuclear Physics B, 2022
The Becchi–Rouet–Stora–Tyutin (BRST) ghost field is a key element in constructing Witten's cubic open string field theory. However, to date, the ghost sector of the string field theory has not received a great deal of attention. In this study, we address
Taejin Lee
doaj   +1 more source