Results 41 to 50 of about 618 (129)
Subleading soft theorem for multiple soft gravitons
Journal of High Energy Physics, 2017 We derive the subleading soft graviton theorem in a generic quantum theory of gravity for arbitrary number of soft external gravitons and arbitrary number of finite energy external states carrying arbitrary mass and spin.
Subhroneel Chakrabarti +4 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
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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
Braneworld black holes and black strings [PDF]
, 2008 This thesis involves the study of strong and weak gravity phenomenology within the braneworld paradigm. We begin with a general overview of the hypothesised concept of extra spatial dimensions and explain why they are so interesting.
Mistry, Bina
core
Fundamental Superstrings as Holograms
, 2007 46 pages, JHEP style. v2: Comments, references addedThe worldsheet of a macroscopic fundamental superstring in the Green-Schwarz light-cone gauge is viewed as a possible boundary hologram of the near horizon region of a small black string. For toroidally
Murthy, Sameer, Dabholkar, Atish
core +2 more sources
Heterotic sigma models on T 8 and the Borcherds automorphic form Φ12
Journal of High Energy Physics, 2017 We consider the spectrum of BPS states of the heterotic sigma model with (0, 8) supersymmetry and T 8 target, as well as its second-quantized counterpart.
Sarah M. Harrison +4 more
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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
Worldsheet description of a massive type IIA superstring in 10D
Journal of High Energy Physics, 2023 We construct, following [1, 2], a massive M2-brane (supermembrane) as the limit of a genus two M2-brane that becomes a twice punctured Riemann surface with particular boundary conditions on the fields defined on the punctures.
M. P. Garcia del Moral +2 more
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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 +2 more
wiley +1 more source