114 citations · 462 across the 9 of their papers we have counts for
4 papers · 1 filter
No Classicalization Beyond Spherical Symmetry
Ratindranath Akhoury, Shinji Mukohyama, Ryo Saotome
We point out that a field theory that exhibits the classicalization phenomenon for perfect spherical symmetry ceases to do so when the spherical symmetry is significantly relaxed.…
Collinear and Soft Divergences in Perturbative Quantum Gravity
Ratindranath Akhoury, Ryo Saotome, George Sterman
Collinear and soft divergences in perturbative quantum gravity are investigated to arbitrary orders in amplitudes for wide-angle scattering, using methods developed for gauge theor…
Non-Stationary Dark Energy Around a Black Hole
Ratindranath Akhoury, David Garfinkle, Ryo Saotome +1
Numerical simulations of the accretion of test scalar fields with non-standard kinetic terms (of the k-essence type) onto a Schwarzschild black hole are performed. We find a full d…
Gravitational collapse of k-essence
Ratindranath Akhoury, David Garfinkle, Ryo Saotome
We perform numerical simulations of the gravitational collapse of a k-essence scalar field. When the field is sufficiently strongly gravitating, a black hole forms. However, the bl…