Results 61 to 70 of about 5,303 (156)

Massless D-strings and moduli stabilization in type I cosmology [PDF]

, 2011
We consider the cosmological evolution induced by the free energy F of a gas of maximally supersymmetric heterotic strings at finite temperature and weak coupling in dimension D>=4.
A Dabholkar, A Strominger, B Carlos de, B McClain, C Angelantonj, C Angelantonj, C Angelantonj, C Angelantonj, C Bachas, C Bachas, C Kounnas, C Kounnas, C Kounnas, C Kounnas, C Kounnas, C Kounnas, C Vafa, CM Hull, D Kutasov, E Cremmer, E Kiritsis, E Witten, EG Adelberger, F Bourliot, F Bourliot, GD Coughlan, H Partouche, Hervé Partouche, I Antoniadis, I Antoniadis, I Antoniadis, I Antoniadis, I Antoniadis, I Antoniadis, I Florakis, J Atick, J Estes, J Polchinski, JD Blum, JD Blum, John Estes, JR Ellis, JR Ellis, JR Ellis, JR Ellis, K Dasgupta, KH O’Brien, KS Narain, L Kofman, L Álvarez-Gaumé, L Álvarez-Gaumé, LE Ibáñez, Lihui Liu, M Graña, PH Ginsparg, PH Ginsparg, R Rohm, S Ferrara, S Ferrara, S Ferrara, S Gukov, S Kachru, S Watson, S Watson, SB Giddings, SP Patil, T Banks, T Battefeld, T Catelin-Jullien, T Catelin-Jullien, VP Nair   +70 more
core   +2 more sources

On the equivalence between SRS and PCO formulations of superstring perturbation theory

Journal of High Energy Physics, 2023
We establish the equivalence between two formulations of superstring perturbation theory, one based on integration over the supermoduli space of super Riemann surfaces (SRS), the other based on integration over the bosonic moduli space with insertions of
Charles Wang, Xi Yin
doaj   +1 more source

Notes on Characterizations of 2d Rational SCFTs: Algebraicity, Mirror Symmetry, and Complex Multiplication

Fortschritte der Physik, Volume 73, Issue 1-2, February 2025.
Abstract S. Gukov and C. Vafa proposed a characterization of rational N=(1,1)$N=(1,1)$ superconformal field theories (SCFTs) in 1+1$1+1$ dimensions with Ricci‐flat Kähler target spaces in terms of the Hodge structure of the target space, extending an earlier observation by G. Moore.
Abhiram Kidambi, Masaki Okada, Taizan Watari   +2 more
wiley   +1 more source

On ℛ4 Terms and MHV Amplitudes in 𝒩 = 5,6 Supergravity Vacua of Type II Superstrings

Advances in High Energy Physics, Volume 2011, Issue 1, 2011., 2011
We compute one‐loop threshold corrections to ℛ4 terms in 𝒩 = 5,6 supergravity vacua of Type II superstrings. We then discuss nonperturbative corrections generated by asymmetric D‐brane instantons. Finally we derive generating functions for MHV amplitudes at tree level in 𝒩 = 5,6 supergravities.
Massimo Bianchi, Yang-Hui He
wiley   +1 more source

Topics in Two-Loop Superstring Perturbation Theory [PDF]

, 2014
In this contribution to the Proceedings of the Conference on Analysis, Complex Geometry, and Mathematical Physics, an expository overview of superstring perturbation theory to two loop order is presented to an audience of mathematicians and physicists ...
D'Hoker, Eric
core  

Weak Scale Superstrings [PDF]

, 1996
Recent developments in string duality suggest that the string scale may not be irrevocably tied to the Planck scale. Two explicit but unrealistic examples are described where the ratio of the string scale to the Planck scale is arbitrarily small ...
A. Sagnotti, E. Gimon, E. Witten, E. Witten, F. Abe, I. Antoniadis, I. Antoniadis, J. Atick, J. Bagger, J. Erler, J. Lykken, J. Polchinski, J. Schwarz, J. Schwarz, J. Schwarz, J. Schwarz, Joseph D. Lykken, M. Bander, M. Bianchi, M. Dine, M. Dine, M. Green, M. J. Duff, P. Ginsparg, P. Horava, T. Banks   +25 more
core   +2 more sources

Fermionic one-loop amplitudes of the RNS superstring

Journal of High Energy Physics, 2018
We investigate massless n-point one-loop amplitudes of the open RNS superstring with two external fermions and determine their worldsheet integrands.
Seungjin Lee, Oliver Schlotterer
doaj   +1 more source

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

T‐Symmetry in String Geometry Theory

Advances in High Energy Physics, Volume 2025, Issue 1, 2025.
String geometry theory is one of the candidates of nonperturbative formulation of string theory. In this paper, we have shown that dimensionally reduced string geometry theories have what we call T‐symmetry. In the case of the dimensional reduction in space‐like directions, the T‐symmetry transformation gives the T‐dual transformation between the Type ...
Matsuo Sato, Taiki Tohshima, Michele Arzano   +2 more
wiley   +1 more source

Understanding Gravity: Some Extra‐Dimensional Perspectives

International Scholarly Research Notices, Volume 2011, Issue 1, 2011., 2011
Gravity is one of the most inexplicable forces of nature, controlling everything, from the expansion of the Universe to the ebb and flow of ocean tides. The search for the laws of motion and gravitation began more than two thousand years ago but still we do not have the complete picture of it.
V. H. Satheeshkumar, P. K. Suresh, T. Boller   +2 more
wiley   +1 more source