Results 81 to 90 of about 475,304 (198)

Unoriented Open-Closed String Field Theory [PDF]

, 1997
The string field theory for unoriented open-closed string mixed system is constructed up to quadratic order based on the joining-splitting type vertices. The gauge invariance with closed string transformation parameter is proved.
Kugo, Taichiro, Takahashi, Tomohiko
core   +3 more sources

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

Boundary terms in string field theory

Journal of High Energy Physics
We supplement the string field theory action with boundary terms to make its variational principle well-posed. Central to our considerations is the violation of the stress-energy tensor conservation in non-compact CFTs due to the boundary terms.
Atakan Hilmi Fırat, Raji Ashenafi Mamade   +1 more
doaj   +1 more source

Genus-one string amplitudes from conformal field theory

Journal of High Energy Physics, 2019
We explore and exploit the relation between non-planar correlators in N $$ \mathcal{N} $$ = 4 super-Yang-Mills, and higher-genus closed string amplitudes in type IIB string theory.
Luis F. Alday, Agnese Bissi, Eric Perlmutter   +2 more
doaj   +1 more source

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

On String Field Theory and Effective Actions

, 1992
A truncation of string field theory is compared with the duality invariant effective action of $D=4, N=4$ heterotic strings to cubic order. The three string vertex must satisfy a set of compatibility conditions.
Ademollo, Amit Giveon, Bergshoeff, Bienkowska, Bonini, Caneschi, Cohn, Covri, D'Adda, de Roo, de Roo, de Roo, Dine, Eskin, Giveon, Giveon, Giveon, Giveon, Green, Gross, Klebanov, Kugo, Kugo, Kugo, LeClair, LeClair, Li, Mathur, Mukherji, Narain, Narain, Ohta, Ooguri, Saadi, Sciuto, Sen, Sen, Sen, Sonoda, Sonoda, Wagemans, Witten, Witten, Witten, Zwiebach, Zwiebach   +45 more
core   +2 more sources

Marginal deformations in string field theory [PDF]

, 2007
We describe a method for obtaining analytic solutions corresponding to exact marginal deformations in open bosonic string field theory. For the photon marginal deformation we have an explicit analytic solution to all orders.
A. Iqbal, A. Sen, A. Sen, A. Sen, B. Zwiebach, E. Fuchs, E. Fuchs, E. Fuchs, Ehud Fuchs, F. Katsumata, H. Fuji, H.-T. Yang, I. Ellwood, I. Kishimoto, J. Kluson, J. Kluson, K. Furuuchi, L. Rastelli, L. Rastelli, L. Rastelli, M. Kiermaier, M. Schnabl, M. Schnabl, M. Schnabl, Michael Kroyter, Robertus Potting, T. Erler, T. Erler, T. Erler, T. Takahashi, Y. Okawa, Y. Okawa, Y. Okawa   +32 more
core   +3 more sources

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

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