Results 51 to 60 of about 618 (129)
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 +2 more
wiley +1 more source
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
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
Exploring T‐Duality for Self‐Dual Fields
Fortschritte der Physik, Volume 72, Issue 5, May 2024.Abstract Avatars of T‐duality within Sen's formalism for self‐dual field strengths in various dimensions are studied. This formalism is shown to naturally accommodate the T‐duality relation between Type IIA/IIB theories when compactified on a circle without the need for imposing the self‐duality constraint by hand, as is usually done. The study of this
Subhroneel Chakrabarti +1 more
wiley +1 more source
Carrollian limit of NS-NS and Heterotic Supergravity
Journal of High Energy PhysicsWe construct the Carrollian limit of NS–NS and heterotic supergravity through an ultra-relativistic expansion of the fields. An appropriate scaling of the dilaton renders the measure finite and compensates the divergences arising from the NS-NS ...
Romina Ballesteros +2 more
doaj +1 more source
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
Unification of Gravity and Internal Interactions
Fortschritte der Physik, Volume 72, Issue 1, January 2024.Abstract In the gauge theoretic approach of gravity, general relativity is described by gauging the symmetry of the tangent manifold in four dimensions. Usually the dimension of the tangent space is considered to be equal to the dimension of the curved manifold. However, the tangent group of a manifold of dimension d is not necessarily SOd$SO_d$.
Spyros Konitopoulos +2 more
wiley +1 more source
Automorphisms and twisted vertex operators [PDF]
, 1987 This work is an examination of various aspects of twisted vertex operator representations of Kac-Moody algebras. It starts with an introduction to Kac-Moody algebras and string theories, including a discussion of the propagation of strings on orbifolds ...
Myhill, R.G, Myhill, Richard Graham
core
Journal of High Energy PhysicsWe show how starting with one-string space of states in BRST formalism one can construct a large class of physical quantities containing, in particular, scattering amplitudes for bosonic string and superstring.
A. Schwarz
doaj +1 more source
Heterotic instantons for monad and extension bundles
Journal of High Energy Physics, 2020 We consider non-perturbative superpotentials from world-sheet instantons wrapped on holomorphic genus zero curves in heterotic string theory. These superpotential contributions feature prominently in moduli stabilization and large field axion inflation ...
Evgeny I. Buchbinder +3 more
doaj +1 more source