Igor Mol
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View article: Comments on Minitwistors and the Celestial Supersphere
Comments on Minitwistors and the Celestial Supersphere Open
Continuing our program of deriving aspects of celestial holography from string theory, we extend the Roiban-Spradlin-Volovich-Witten (RSVW) formalism to celestial amplitudes. We reformulate the tree-level maximally-helicity-violating (MHV)…
View article: Comments on Celestial CFT and $AdS_{3}$ String Theory
Comments on Celestial CFT and $AdS_{3}$ String Theory Open
In a recent work, Ogawa et al. (2024) proposed a model for celestial conformal field theory (CFT) based on the $H_{3}^{+}$-Wess-Zumino-Novikov-Witten (WZNW) model. In this paper, we extend the model advanced by Ogawa et al. (2024), demonst…
View article: Partial Differential Equations for MHV Celestial Amplitudes in Liouville Theory
Partial Differential Equations for MHV Celestial Amplitudes in Liouville Theory Open
In this note, we continue our study of Liouville theory and celestial amplitudes by deriving a set of partial differential equations governing the $n$-point MHV celestial amplitudes for gluons and gravitons, parametrised by the Liouville c…
View article: A Holographic Construction of MHV Graviton Amplitudes in Celestial CFT
A Holographic Construction of MHV Graviton Amplitudes in Celestial CFT Open
In this note, we show that tree-level MHV $n$-graviton amplitudes, when analytically continued to Klein space, can be holographically generated as the correlators of a two-dimensional conformal field theory ($2d$ CFT) in the large-$N$ semi…
View article: Gauge Invariant Celestial Observables
Gauge Invariant Celestial Observables Open
In this note, it is shown that the gravitational memory effects (in particular, the displacement and spin memory effects) can be computed as the holonomies associated to the (tree-level) expectation value of the gauge invariant gravitation…
View article: Introductory Lectures on Quantum Field Theory and non-Abelian Gauge Theories
Introductory Lectures on Quantum Field Theory and non-Abelian Gauge Theories Open