106 citations · 425 across the 10 of their papers we have counts for
10 papers
Inflation Alternative via the Gravitational Field of a Singularity
Michael Zlotnikov
We explore the scenario that the observable universe emerged from the vicinity of a negative mass ring singularity, and all content of the universe travels at the same group veloci…
Relativistic partial waves for celestial amplitudes
Y. T. Albert Law, Michael Zlotnikov
The formalism of relativistic partial wave expansion is developed for four-point celestial amplitudes of massless external particles. In particular, relativistic partial waves are…
Massive Spinning Bosons on the Celestial Sphere
Y. T. Albert Law, Michael Zlotnikov
A natural extension of the Pasterski-Shao-Strominger (PSS) prescription is described, enabling the map of Minkowski space amplitudes with massive spinning external legs to the cele…
Poincaré Constraints on Celestial Amplitudes
Y. T. Albert Law, Michael Zlotnikov
The functional structure of celestial amplitudes as constrained by Poincaré symmetry is investigated in and -point cases for massless external particles of various spin,…
Celestial Amplitudes: Conformal Partial Waves and Soft Limits
Dhritiman Nandan, Anders Schreiber, Anastasia Volovich +1
Massless scattering amplitudes in four-dimensional Minkowski spacetime can be Mellin transformed to correlation functions on the celestial sphere at null infinity called celestial…
Tree-level gluon amplitudes on the celestial sphere
Anders Schreiber, Anastasia Volovich, Michael Zlotnikov
Pasterski, Shao and Strominger have recently proposed that massless scattering amplitudes can be mapped to correlators on the celestial sphere at infinity via a Mellin transform. W…
Leading multi-soft limits from scattering equations
Michael Zlotnikov
A Cachazo-He-Yuan (CHY) type formula is derived for the leading gluon, bi-adjoint scalar , Yang-Mills-scalar and non-linear sigma model -soft factors in arbitrary dim…
Polynomial reduction and evaluation of tree- and loop-level CHY amplitudes
Michael Zlotnikov
We develop a polynomial reduction procedure that transforms any gauge fixed CHY amplitude integrand for scattering particles into a -moduli multivariate polynomial of what w…
Double Soft Theorems in Gauge and String Theories
Anastasia Volovich, Congkao Wen, Michael Zlotnikov
We investigate the tree-level S-matrix in gauge theories and open superstring theory with several soft particles. We show that scattering amplitudes with two or three soft gluons o…
Sub-sub-leading soft-graviton theorem in arbitrary dimension
Michael Zlotnikov
The CHY formula which describes an -point tree level scattering amplitude for scalars, gluons or gravitons in arbitrary dimension [22], is used to prove the sub-sub-leading soft…