Results 21 to 30 of about 5,303 (156)

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

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 ...
A.P. Foakes, N. Mohammedi, D.A. Ross
openaire   +1 more source

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

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

Electric/magnetic duality and its stringy origins [PDF]

, 1995
We review electric/magnetic duality in $N=4$ (and certain $N=2$) globally supersymmetric gauge theories and show how this duality, which relates strong to weak coupling, follows as a consequence of a string/string duality.
Duff, M. J.
core   +3 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

Noncommutativity and nonassociativity of type II superstring with coordinate dependent RR field — the general case

Journal of High Energy Physics, 2022
In this paper we consider non-commutativity that arises from T-duality of bosonic coordinates of type II superstring in presence of coordinate dependent Ramond-Ramond field. Action with such choice of the background fields is not translational invariant.
D. Obrić, B. Nikolić
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.
H. Kataoka, Hikaru Sato
openaire   +1 more source

String theory dynamics in various dimensions [PDF]

, 1995
The strong coupling dynamics of string theories in dimension d ⩾ 4 are studied. It is argued, among other things, that eleven-dimensional supergravity arises as a low energy limit of the ten-dimensional Type IIA superstring, and that a recently ...
E. Witten
semanticscholar   +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