Results 11 to 20 of about 5,118 (111)
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
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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
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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
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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
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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
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Higher-derivative heterotic Double Field Theory and classical double copy
Journal of High Energy Physics, 2021 The generalized Kerr-Schild ansatz (GKSA) is a powerful tool for constructing exact solutions in Double Field Theory (DFT). In this paper we focus in the heterotic formulation of DFT, considering up to four-derivative terms in the action principle, while
Eric Lescano, Jesús A. Rodríguez
doaj +1 more source
Random Walks in Rindler Spacetime and String Theory at the Tip of the Cigar [PDF]
, 2014 In this paper, we discuss Rindler space string thermodynamics from a thermal scalar point of view as an explicit example of the results obtained in JHEP 1402 (2014) 127.
Mertens, T. G. +2 more
core +3 more sources
Journal of High Energy Physics, 2019 We show that the two-point tree level amplitude in string theory in flat space is given by the standard free particle expression.
Harold Erbin +2 more
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Heterotic complex structure moduli stabilization for elliptically fibered Calabi-Yau manifolds
Journal of High Energy Physics, 2021 Holomorphicity of vector bundles can stabilize complex structure moduli of a Calabi-Yau threefold in N = 1 supersymmetric heterotic compactifications. In principle, the Atiyah class determines the stabilized moduli.
Wei Cui, Mohsen Karkheiran
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Dilaton incoming vertices of the closed superstring and the heterotic string
Physics Letters B, 1990 Abstract BRST- and conformally-invariant incoming vertices for the dilaton are constructed in the closed superstring and the heterotic string theories. The BRST-invariant (0, 0) conformal field corresponding to the dilaton is determined up to a BRST cohomology transformation.
H. Kataoka, Hikaru Sato
openaire +1 more source