Zobrazeno 1 - 10
of 53
pro vyhledávání: '"Kharel, Savan"'
Autor:
Albayrak, Soner, Kharel, Savan
In this work, we extend the study of soft limits to (Anti) de Sitter spaces, investigating the analytic structure of holographic gluon correlators as part of a broader effort to reveal new symmetries and fundamental structures in gauge theories. By r
Externí odkaz:
http://arxiv.org/abs/2411.13652
Autor:
Chu, Jinwei, Kharel, Savan
We investigate the embedding formalism in conjunction with the Mellin transform to determine tree-level gluon amplitudes in AdS/CFT. Detailed computations of three to five-point correlators are conducted, ultimately distilling what were previously co
Externí odkaz:
http://arxiv.org/abs/2401.00038
In this paper, we explore correlators of a series of theories in anti-de Sitter space: we present comprehensive results for interactions involving scalars, gluons, and gravitons in multiple dimensions. One aspect of our investigation is the establish
Externí odkaz:
http://arxiv.org/abs/2312.02154
Autor:
Chu, Jinwei, Kharel, Savan
In AdS/CFT, we introduce a robust method for computing $n$-point gluon Mellin amplitudes, applicable in various spacetime dimensions. Using the Mellin transform and a recursive algorithm, we efficiently calculate tree-level gluon amplitudes. Our appr
Externí odkaz:
http://arxiv.org/abs/2311.06342
Autor:
Albayrak, Soner, Kharel, Savan
This paper presents a calculation of the four gravitons amplitude in (Anti)-de Sitter space, focusing specifically on external gravitons with positive helicity. To achieve this, we employ a generalized recursion method that involves complexifying all
Externí odkaz:
http://arxiv.org/abs/2302.09089
We explore color-kinematic duality for tree-level AdS/CFT correlators in momentum space. We start by studying the bi-adjoint scalar in AdS at tree-level as an illustrative example. We follow this by investigating two forms of color-kinematic duality
Externí odkaz:
http://arxiv.org/abs/2012.10460
Publikováno v:
Phys. Rev. D 102, 126020 (2020)
Scattering amplitudes of massless particles in Minkowski space can be expressed in a conformal basis by Mellin transforming the momentum space amplitudes to correlation functions on the celestial sphere at null infinity. In this paper, we study celes
Externí odkaz:
http://arxiv.org/abs/2007.09338
Autor:
Albayrak, Soner, Kharel, Savan
Publikováno v:
Phys. Rev. D 103, 026004 (2021)
In this work we present a systematic study of AdS$_{d+1}$ loop amplitudes for gluons and gravitons using momentum space techniques. Inspired by the recent progress in tree level computation, we construct a differential operator that can act on a scal
Externí odkaz:
http://arxiv.org/abs/2006.12540
Publikováno v:
Phys. Rev. D 101, 124043 (2020)
In this paper, we explore momentum space approach to computing scalar amplitudes in Anti-de Sitter space. We show that the algorithm derived by Arkani-Hamed, Benincasa, and Postnikov for cosmological wavefunctions can be straightforwardly adopted for
Externí odkaz:
http://arxiv.org/abs/2001.06777
Autor:
Albayrak, Soner, Kharel, Savan
Publikováno v:
JHEP 1912 (2019) 135
In this follow up paper, we calculate higher point tree level graviton Witten diagrams in AdS$_4$ via bulk perturbation theory. We show that by rearranging the bulk to bulk graviton propagators, the calculations effectively reduce to the computation
Externí odkaz:
http://arxiv.org/abs/1908.01835