Soner Albayrak

E-mail

soneralb@metu.edu.tr

Department

Department of Physics

Soft limits of gluon amplitudes in holography and cosmology Albayrak, Soner; Kharel, Savan (2025-07-01) 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 struct...
Momentum-space formulae for AdS correlators for diverse theories in diverse dimensions Albayrak, Soner; Kharel, Savan; Wang, Xinkang (2024-07-01) 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 in...
All plus four point (A)dS graviton function using generalized on-shell recursion relation Albayrak, Soner; Kharel, Savan (2023-05-01) 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 tha...
Bootstrapping Nf=4 conformal QED3 Albayrak, Soner; Erramilli, Rajeev S.; Li, Zhijin; Poland, David; Xin, Yuan (2022-04-15) We present the results of a conformal bootstrap study of the presumed unitary IR fixed point of quantum electrodynamics in three dimensions (QED3) coupled to Nf=4 two-component Dirac fermions. Specifically, we study the fo...
On duality of color and kinematics in (A)dS momentum space Albayrak, Soner; Kharel, Savan; Meltzer, David (2021-03-01) 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...
Spinning loop amplitudes in anti-de Sitter space Albayrak, Soner; Kharel, Savan (2021-01-05) In this work we present a systematic study of AdSd+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...
Loop celestial amplitudes for gauge theory and gravity Albayrak, Soner; Chowdhury, Chandramouli; Kharel, Savan (2020-12-16) 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. I...
The inversion formula and 6j symbol for 3d fermions Albayrak, Soner; Meltzer, David; Poland, David (2020-09-01) In this work we study the 6j symbol of the 3d conformal group for fermionic operators. In particular, we study 4-point functions containing two fermions and two scalars and also those with four fermions. By using weight-sh...
Study of momentum space scalar amplitudes in AdS spacetime Albayrak, Soner; Chowdhury, Chandramouli; Kharel, Savan (2020-06-15) In this paper, we explore momentum space approach to computing scalar amplitudes in anti-de Sitter (AdS) space. We show that the algorithm derived by Arkani-Hamed, Benincasa, and Postnikov for cosmological wave functions c...
Towards the higher point holographic momentum space amplitudes. Part II. Gravitons Albayrak, Soner; Kharel, Savan (2019-12-01) In this follow up paper, we calculate higher point tree level graviton Witten diagrams in AdS4 via bulk perturbation theory. We show that by rearranging the bulk to bulk graviton propagators, the calculations effectively r...

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