Results 11 to 20 of about 10,141 (199)
Generalizations of the double-copy: the KLT bootstrap
Journal of High Energy Physics, 2022 We formulate a new program to generalize the double-copy of tree amplitudes. The approach exploits the link between the identity element of the “KLT algebra” and the KLT kernel, and we demonstrate how this leads to a set of KLT bootstrap equations that ...
Huan-Hang Chi +4 more
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KLT factorization of nonrelativistic string amplitudes [PDF]
Journal of High Energy Physics, 2022 We continue our study of the Kawai-Lewellen-Tye (KLT) factorization of winding string amplitudes in [1]. In a toroidal compactification, amplitudes for winding closed string states factorize into products of amplitudes for open strings ending on an array
Ziqi Yan, Matthew Yu
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Projectively flat klt varieties [PDF]
Journal de l’École polytechnique — Mathématiques, 2021 In the context of uniformisation problems, we study projective varieties with klt singularities whose cotangent sheaf admits a projectively flat structure over the smooth locus. Generalising work of Jahnke-Radloff, we show that torus quotients are the only klt varieties with semistable cotangent sheaf and extremal Chern classes. An analogous result for
Greb, Daniel +2 more
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Note on new KLT relations [PDF]
Journal of High Energy Physics, 2010 In this short note, we present two results about KLT relations discussed in recent several papers. Our first result is the re-derivation of Mason-Skinner MHV amplitude by applying the S_{n-3} permutation symmetric KLT relations directly to MHV amplitude.
Feng, B., He, S., Huang, R., Jia, Y.
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Reductive quotients of klt singularities [PDF]
Inventiones mathematicaeAbstractWe prove that the quotient of a klt type singularity by a reductive group is of klt type in characteristic 0. In particular, given a klt variety $X$ X endowed with the action of a reductive group $G$ G and admitting a quasi-projective good quotient $X\rightarrow X/\!/G$
Braun, Lukas +3 more
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KLT factorization of winding string amplitudes [PDF]
Journal of High Energy Physics, 2021 We uncover a Kawai-Lewellen-Tye (KLT)-type factorization of closed string amplitudes into open string amplitudes for closed string states carrying winding and momentum in toroidal compactifications.
Jaume Gomis, Ziqi Yan, Matthew Yu
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On polytopes and generalizations of the KLT relations [PDF]
Journal of High Energy Physics, 2020 We combine the technology of the theory of polytopes and twisted intersection theory to derive a large class of double copy relations that generalize the classical relations due to Kawai, Lewellen and Tye (KLT).
Nikhil Kalyanapuram
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Direct summands of klt singularities
Inventiones mathematicaeWe show that direct summands (or more generally, pure images) of klt type singularities are of klt type. As a consequence, we give a different proof of a recent result of Braun, Greb, Langlois and Moraga that reductive quotients of klt type singularities are of klt type.
Zhuang, Ziquan
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Journal of High Energy PhysicsWe study the building blocks of open and closed string amplitudes on AdS. These are given by two infinite towers of world-sheet integrals generalising the Euler and complex beta functions respectively. We show that the open and closed building blocks are
Luis F. Alday +2 more
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The KLT Kernel in Twistor Space. [PDF]
Commun Math PhysAbstract The double copy relationship between Yang–Mills theory and general relativity can be stated in terms of a field theory Kawai–Lewellen–Tye (KLT) momentum kernel, which maps two colour-ordered gluon amplitudes to a graviton amplitude at tree-level.
Adamo T, Klisch S.
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