Results 31 to 40 of about 462 (74)

One-loop monodromy relations on single cuts

Journal of High Energy Physics, 2017
The discovery of colour-kinematic duality has led to significant progress in the computation of scattering amplitudes in quantum field theories. At tree level, the origin of the duality can be traced back to the monodromies of open-string amplitudes ...
Alexander Ochirov, Piotr Tourkine, Pierre Vanhove   +2 more
doaj   +1 more source

Complex Structure of the Four‐Dimensional Kerr Geometry: Stringy System, Kerr Theorem, and Calabi‐Yau Twofold

Advances in High Energy Physics, Volume 2013, Issue 1, 2013., 2013
The 4D Kerr geometry displays many wonderful relations with quantum world and, in particular, with superstring theory. The lightlike structure of fields near the Kerr singular ring is similar to the structure of Sen solution for a closed heterotic string.
Alexander Burinskii, P. Bussey
wiley   +1 more source

New BPS states from bosonic/heterotic duality

Journal of High Energy Physics
In this paper, we consider the recently proposed bosonic/heterotic duality that relates the heterotic superstrings to the noncritical bosonic string. Although the latter is nonsupersymmetric, it can be viewed as pseudo-supersymmetric in that the theory ...
Kai-Peng Lu, H. Lü, Liang Ma
doaj   +1 more source

Dark Dimension With (Little) Strings Attached

Fortschritte der Physik, Volume 73, Issue 4, April 2025.
Abstract A relation between dark energy and the scale of new physics in weakly coupled string theory is motivated. This mixing between infrared and ultraviolet physics leads to a unique corner for real‐world phenomenology: barring fine‐tunings, the authors are naturally led to the “dark dimension” scenario, a single mesoscopic extra dimension of micron
Ivano Basile, Dieter Lüst
wiley   +1 more source

Supermoduli and PCOs at genus two

Journal of High Energy Physics, 2023
We illustrate the relation between supermoduli integration and picture changing operators (PCOs) particularly concerning the role of vertical integration, in the context of superstring vacuum amplitudes, by an explicit comparison of different ...
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

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

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