Results 11 to 20 of about 618 (129)
Homotopy Transfer and Effective Field Theory II: Strings and Double Field Theory
Fortschritte der Physik, Volume 70, Issue 2-3, March 2022., 2022 Abstract We continue our study of effective field theory via homotopy transfer of L∞$L_\infty$‐algebras, and apply it to tree‐level non‐Wilsonian effective actions of the kind discussed by Sen in which the modes integrated out are comparable in mass to the modes that are kept. We focus on the construction of effective actions for string states at fixed
Alex S. Arvanitakis +3 more
wiley +1 more source
The anomaly that was not meant IIB
Fortschritte der Physik, Volume 70, Issue 1, January 2022., 2022 Abstract Type IIB supergravity enjoys a discrete non‐Abelian duality group, which has potential quantum anomalies. In this paper we explicitly compute these, and present the bordism group that controls them, modulo some physically motivated assumptions.
Arun Debray +3 more
wiley +1 more source
Toroidal & Orbifold Compactifications at Large D and D‐Duality
Fortschritte der Physik, Volume 70, Issue 1, January 2022., 2022 Abstract In this paper I will further investigate the spectrum of quantum gravity or string theories at large number of dimensions. We will see that volumes of certain orbifolds shrink at large D. It follows that the mass spectra of the leading Kaluza‐Klein towers and also of wrapped brane states on these orbifolds possess a non‐trivial dependence on D:
Dieter Lüst
wiley +1 more source
String (Gravi)photons, “Dark Brane Photons”, Holography and the Hypercharge Portal
Fortschritte der Physik, Volume 69, Issue 6, June 2021., 2021 Abstract The mixing of graviphotons and dark brane photons to the Standard Model hypercharge is analyzed in full generality, in weakly‐coupled string theory. Both the direct mixing as well as effective terms that provide mixing after inclusion of SM corrections are estimated to lowest order.
P. Anastasopoulos +3 more
wiley +1 more source
Superstring Backgrounds in String Geometry
Advances in High Energy Physics, Volume 2021, Issue 1, 2021., 2021 String geometry theory is a candidate of the nonperturbative formulation of string theory. In order to determine the string vacuum, we need to clarify how superstring backgrounds are described in string geometry theory. In this paper, we show that all the type IIA, IIB, SO(32) type I, and SO(32) and E8 × E8 heterotic superstring backgrounds are ...
Masaki Honda +3 more
wiley +1 more source
Non-perturbative triality in heterotic and type II N=2 strings [PDF]
, 1999 The non-perturbative equivalence of four-dimensional N=2 superstrings with three vector multiplets and four hypermultiplets is analysed. These models are obtained through freely acting orbifold compactifications from the heterotic, the symmetric and the ...
Kounnas, Costas +5 more
core +1 more source
, 1985 New covariant actions for both the Green-Schwarz superstrings and the heterotic strings are presented. The construction of these new actions is based on a simple, intuitive, physical picture. The connection to the Green-Schwarz light-cone quantization is
Tye, S. H.Henry
core +2 more sources
Fermionic T-duality and U-duality in type II supergravity [PDF]
, 2011 PhDThis thesis deals with the two duality symmetries of N = 2 D = 10 supergravity theories that are descendant from the full superstring theory: fermionic T-duality and U-duality.
Bakhmatov, Ilya
core +4 more sources
Integrating three-loop modular graph functions and transcendentality of string amplitudes
Journal of High Energy Physics, 2022 Modular graph functions (MGFs) are SL(2, ℤ)-invariant functions on the Poincaré upper half-plane associated with Feynman graphs of a conformal scalar field on a torus.
Eric D’Hoker, Nicholas Geiser
doaj +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
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