A bstract In [1], logarithmic correction to subleading soft photon and soft graviton theorems
have been derived in four spacetime dimensions from the ratio of IR-finite S-matrices. This …

A bstract In this paper, we analyze the loop corrections to celestial OPE for gluons and
gravitons. Even at the loop level, the soft gluons and gravitons have conformal …

A bstract Following Pasterski-Shao-Strominger we construct a new basis of states in the
single-particle Hilbert space of massless particles as a linear combination of standard …

A bstract We discuss recursion relations for scattering amplitudes with massive particles of
any spin. They are derived via a two-parameter shift of momenta, combining a BCFW-type …

A bstract We derive the subleading soft graviton theorem in a generic quantum theory of
gravity for arbitrary number of soft external gravitons and arbitrary number of finite energy …

Using soft-graviton theorems a well-known zero-frequency limit (ZFL) for the gravitational
radiation flux dE GW/dω is re-derived and extended to order O ω and O ω 2 for arbitrary …

A bstract Classical soft theorems applied to probe scattering processes on AdS 4
spacetimes predict the existence of perturbative 1/L 2 corrections to the soft photon and soft …

In an earlier paper we have constructed a basis of massless single particle quantum states
which transform in the unitary principal series representation of the four dimensional Lorentz …

A bstract We obtain the subleading soft theorem for a generic theory of quantum gravity, for
arbitrary number of soft photons and gravitons and for arbitrary number of finite energy …

It is now well understood that Ward identities associated with the (extended) BMS algebra
are equivalent to single soft graviton theorems. In this work, we show that if we consider …