… structure of scattering amplitudes and in the ability of computing the latter in gauge theories
at … These methods build on using a color decomposition of the gauge theory amplitudes and …

… the understanding of gauge and gravitational scattering amplitudes. These advances are
im… It has been of great interest and applicability in studies of amplitudes in both gauge theory …

… amplitudes. This decomposition mirrors closely the color decomposition of gauge theory
scattering amplitudes … While non-local quantities, partial amplitudes carry no color charge and …

… the perturbative gauge theory and string theory in twistor … of the scattering amplitudes in
Yang-Mills theory by using the off … usual tree level MHV scattering amplitudes in gauge theory [4, …

… calculation of scattering amplitudes in hot gauge theories. As the first step in this program,
I determine the spectral representations for the renormalized gauge field and fermion …

… Similarly, scattering amplitudes for quantum chromodynamics, or QCD, the most relativistic
non-Abelian gauge theory we can study in the laboratory, are shrouded from direct view by …

… them are the gauge invariant on-shell scattering amplitudes A. These on-shell amplitudes A
are … applicability in recent studies of amplitudes in both gauge theory and gravity, and we will …

… scattering amplitudes in realistic gauge theories. As a … the scattering amplitudes in this
theory have a remarkably simple form. This property is a manifestation of integrability of the theory …

In this thesis we present a study of the computation of classical observables in gauge
theories and gravity directly from scattering amplitudes. In particular, we discuss the direct …

… To end the section, we propose the DC integrands to compute the scattering amplitudes of
n-gluons and interactions with scalar fields. Section 3.1 is conceptually important, since here …