The momentum kernel of gauge and gravity theories

TY - JOUR

T1 - The momentum kernel of gauge and gravity theories

AU - Bjerrum-Bohr, N. Emil J.

AU - Damgaard, Poul Henrik

AU - Søndergaard, Thomas

AU - Vanhove, Pierre

PY - 2011

Y1 - 2011

N2 - We derive an explicit formula for factorizing an n-point closed string amplitude into open string amplitudes. Our results are phrased in terms of a momentum kernel which in the limit of infinite string tension reduces to the corresponding field theory kernel. The same momentum kernel encodes the monodromy relations which lead to the minimal basis of color-ordered amplitudes in Yang-Mills theory. There are interesting consequences of the momentum kernel pertaining to soft limits of amplitudes. We also comment on surprising links between gravity and certain combinations of kinematic and color factors in gauge theory.

AB - We derive an explicit formula for factorizing an n-point closed string amplitude into open string amplitudes. Our results are phrased in terms of a momentum kernel which in the limit of infinite string tension reduces to the corresponding field theory kernel. The same momentum kernel encodes the monodromy relations which lead to the minimal basis of color-ordered amplitudes in Yang-Mills theory. There are interesting consequences of the momentum kernel pertaining to soft limits of amplitudes. We also comment on surprising links between gravity and certain combinations of kinematic and color factors in gauge theory.

M3 - Journal article

SN - 1126-6708

VL - 2011

SP - 1101

JO - Journal of High Energy Physics (Online)

JF - Journal of High Energy Physics (Online)

IS - 1

ER -