Results 51 to 60 of about 5,118 (111)
Fortschritte der Physik, Volume 73, Issue 9-10, October 2025.Abstract The unification of conformal and fuzzy gravities with internal interactions is based on the facts that i) the tangent group of a curved manifold and the manifold itself do not necessarily have the same dimensions and ii) both gravitational theories considered here have been formulated in a gauge theoretic way.
Gregory Patellis +3 more
wiley +1 more source
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
Amplitudes on plane waves from ambitwistor strings
Journal of High Energy Physics, 2017 In marked contrast to conventional string theory, ambitwistor strings remain solvable worldsheet theories when coupled to curved background fields. We use this fact to consider the quantization of ambitwistor strings on plane wave metric and plane wave ...
Tim Adamo +3 more
doaj +1 more source
, 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 +25 more
core +2 more sources
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
Journal of High Energy Physics, 2023 The α ′-expansion of string theory provides a rich set of higher-dimension operators, indexed by ζ values, which can be used to study color-kinematics duality and the double copy. These two powerful properties, actually first noticed in tree-level string
Alex Edison, Micah Tegevi
doaj +1 more source
Perturbative String Thermodynamics near Black Hole Horizons [PDF]
, 2015 We provide further computations and ideas to the problem of near-Hagedorn string thermodynamics near (uncharged) black hole horizons, building upon our earlier work JHEP 1403 (2014) 086. The relevance of long strings to one-loop black hole thermodynamics
Mertens, Thomas G. +2 more
core +3 more sources
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 +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
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