Results 21 to 30 of about 2,664,445 (176)

Pinching parameters for open (super) strings

Journal of High Energy Physics, 2018
We present an approach to the parametrization of (super) Schottky space obtained by sewing together three-punctured discs with strips. Different cubic ribbon graphs classify distinct sets of pinching parameters; we show how they are mapped onto each ...
Sam Playle, Stefano Sciuto
doaj   +1 more source

A Note on Toroidal Compactifications of the Type I Superstring and Other Superstring Vacuum Configurations with 16 Supercharges [PDF]

, 1997
We show that various disconnected components of the moduli space of superstring vacua with 16 supercharges admit a rationale in terms of BPS un-orientifolds, i.e.
Alessandrini, Alessandrini, Alvarez-Gaumé, Angelantoni, Angelantonj, Antoniadis, Antoniadis, Belavin, Bianchi, Bianchi, Bianchi, Bianchi, Bianchi, Bianchi, Bianchi, Bianchi, Cai, Cardy, Dabholkar, Dixon, Dixon, Dixon, Dixon, Dixon, Duff, Ferrara, Fioravanti, Friedan, Gepner, Green, Green, Green, Gross, Hořova, Hořova, Hull, Hull, Hull, Kawai, Lerche, Marcus, Massimo Bianchi, Narain, Narain, Narain, Polchinski, Pradisi, Pradisi, Pradisi, Pradisi, Sagnotti, Salam, Seiberg, Seiberg, Sieberg, Sieberg, Tseytlin, Tseytlin, Vafa, Verlinde, Witten   +60 more
core   +2 more sources

Two-point string amplitudes

Journal of High Energy Physics, 2019
We show that the two-point tree level amplitude in string theory in flat space is given by the standard free particle expression.
Harold Erbin, Juan Maldacena, Dimitri Skliros   +2 more
doaj   +1 more source

Three-loop β-functions for the superstring and heterotic string

Nuclear Physics B, 1988
Abstract The β-function for the (1,1) superstring is calculated explicitly up to three loops, using two different choices of the fermion quantum field. In both cases the bosonic contribution is exactly cancelled by the fermionic contribution. The calculation is repeated for the heterotic string and the non-vanishing β-function is shown to be ...
N. Mohammedi, D.A. Ross, A.P. Foakes
openaire   +2 more sources

Superstring Dualities [PDF]

, 1995
This talk is divided into two parts. The first part reviews some of the duality relationships between superstring theories. These relationships are interpreted as providing evidence for the existence of a unique underlying fundamental theory.
Alvarez, Aspinwall, Becker, Bergshoeff, Bergshoeff, Bergshoeff, Dabholkar, Dabholkar, Dabholkar, Dai, Dine, Duff, Duff, Duff, Duff, Font, Ginsparg, Giveon, Harvey, Horowitz, Hull, Hull, John H. Schwarz, Narain, Nepomechie, Schwarz, Schwarz, Schwarz, Schwarz, Sen, Sen, Strominger, Teitelboim, Townsend, Townsend, Witten   +35 more
core   +2 more sources

Heterotic complex structure moduli stabilization for elliptically fibered Calabi-Yau manifolds

Journal of High Energy Physics, 2021
Holomorphicity of vector bundles can stabilize complex structure moduli of a Calabi-Yau threefold in N = 1 supersymmetric heterotic compactifications. In principle, the Atiyah class determines the stabilized moduli.
Wei Cui, Mohsen Karkheiran
doaj   +1 more source

Higher-derivative heterotic Double Field Theory and classical double copy

Journal of High Energy Physics, 2021
The generalized Kerr-Schild ansatz (GKSA) is a powerful tool for constructing exact solutions in Double Field Theory (DFT). In this paper we focus in the heterotic formulation of DFT, considering up to four-derivative terms in the action principle, while
Eric Lescano, Jesús A. Rodríguez
doaj   +1 more source

BPS Solutions and New Phases of Finite-Temperature Strings [PDF]

, 2000
All high-temperature phases of the known N=4 superstrings in five dimensions can be described by the universal thermal potential of an effective four-dimensional supergravity. This theory, in addition to three moduli s, t, u, contains non-trivial winding
A. Bilal, Abel, Abel, Abel, Alexander, Alvarez, Antoniadis, Antoniadis, Antoniadis, Arutyunov, Atick, Bakas, Bakas, Bakas, Bowick, Brandenberger, Brandhuber, Brandhuber, Cardoso, Carlitz, Cohen, Cvetic, Cvetic, Cvetic, Cvetic, Davis, Deo, Deo, DeWolfe, DeWolfe, Duff, Dvali, Frautschi, Freedman, Fubini, Gross, Hagedorn, Horowitz, Huang, I. Bakas, Ishibashi, J.-P. Derendinger, K. Sfetsos, Kallosh, Kiritsis, Kogan, Kounnas, Mitchell, Ooguri, Ooguri, Salomonson, Sathiapalan, Schwarz, Schwarz, Strominger, Sundborg, Wald, Witten, Witten   +58 more
core   +2 more sources

Massive theta lifts

Journal of High Energy Physics, 2023
We use Poincaré series for massive Maass-Jacobi forms to define a “massive theta lift”, and apply it to the examples of the constant function and the modular invariant j-function, with the Siegel-Narain theta function as integration kernel.
Marcus Berg, Daniel Persson
doaj   +1 more source

Dilaton incoming vertices of the closed superstring and the heterotic string

Physics Letters B, 1990
Abstract BRST- and conformally-invariant incoming vertices for the dilaton are constructed in the closed superstring and the heterotic string theories. The BRST-invariant (0, 0) conformal field corresponding to the dilaton is determined up to a BRST cohomology transformation.
Hironobu Kataoka, Hikaru Sato
openaire   +2 more sources