13 citations · 27 across the 6 of their papers we have counts for
7 papers
Coherent energy cascades in nonlinear disordered Hamiltonians
Anxo Biasi, Brad Cownden, Oleg Evnin +1
The familiar wave kinetic theory revolves around turbulent energy cascades characterized by random phases of the individual normal modes. By contrast, recent years have revealed tu…
The pseudospectra of black holes in AdS
Brad Cownden, Christiana Pantelidou, Miguel Zilhão
We study the stability of quasinormal modes (QNMs) in electrically charged black brane spacetimes that asymptote to AdS by means of the pseudospectrum. Methodologically, we adopt i…
Characteristic approach to the soliton resolution
Piotr Bizoń, Bradley Cownden, Maciej Maliborski
As a toy model for understanding the soliton resolution phenomenon we consider a characteristic initial boundary value problem for the 4 equivariant Yang-Mills equation outside…
Examining Instabilities Due to Driven Scalars in AdS
Brad Cownden
We extend the study of the non-linear perturbative theory of weakly turbulent energy cascades in AdS to include solutions of driven systems, i.e. those with time-dependent…
Variations on the Dirac string
Brad Cownden, Andrew R. Frey
Dirac's original solution of the nontrivial Bianchi identity for magnetic monopoles [Dirac 1948], which redefines the fieldstrength along the Dirac string, diagonalizes the gauge a…
Phase Diagram of Stability for Massive Scalars in Anti-de Sitter Spacetime
Brad Cownden, Nils Deppe, Andrew R. Frey
We diagram the behavior of 5-dimensional anti-de Sitter spacetime against horizon formation in the gravitational collapse of a scalar field, treating the scalar field mass and widt…
Dimensional Reduction for D3-brane Moduli
Brad Cownden, Andrew R. Frey, M. C. David Marsh +1
Warped string compactifications are central to many attempts to stabilize moduli and connect string theory with cosmology and particle phenomenology. We present a first-principles…