362 citations · 2.1k across the 46 of their papers we have counts for
6 papers · 1 filter
Stokes Polytopes : The positive geometry for interactions
Pinaki Banerjee, Alok Laddha, Prashanth Raman
In a remarkable recent work [arXiv : 1711.09102] by Arkani-Hamed et al, the amplituhedron program was extended to the realm of non-supersymmetric scattering amplitudes. In particul…
Asymptotic charges in massless QED revisited: A view from Spatial Infinity
Miguel Campiglia, Alok Laddha
Hamada and Shiu have recently shown that tree level amplitudes in QED satisfy an infinite hierarchy of soft photon theorems, the first two of which are Weinberg and Low's theorems…
Null infinity, the BMS group and infrared issues
Abhay Ashtekar, Miguel Campiglia, Alok Laddha
There has been a recent resurgence of interest in the structure of the gravitational field at null infinity, sparked by new results on soft charges and infrared issues related to t…
Observational Signature of the Logarithmic Terms in the Soft Graviton Theorem
Alok Laddha, Ashoke Sen
We show that the recently discovered logarithmic terms in the soft graviton theorem induce a late time component in the gravitational wave-form that falls off as inverse power of t…
Logarithmic Terms in the Soft Expansion in Four Dimensions
Alok Laddha, Ashoke Sen
It has been shown that in larger than four space-time dimensions, soft factors that relate the amplitudes with a soft photon or graviton to amplitudes without the soft particle als…
Gravity Waves from Soft Theorem in General Dimensions
Alok Laddha, Ashoke Sen
Classical limit of multiple soft graviton theorem can be used to compute the angular power spectrum of long wavelength gravitational radiation in classical scattering provided the…