104 citations · 631 across the 20 of their papers we have counts for
21 papers · 1 filter
Tropical fans, scattering equations and amplitudes
James Drummond, Jack Foster, Ömer Gürdoğan +1
We describe a family of tropical fans related to Grassmannian cluster algebras. These fans are related to the kinematic space of massless scattering processes in a number of ways.…
Algebraic singularities of scattering amplitudes from tropical geometry
James Drummond, Jack Foster, Ömer Gürdoğan +1
We address the appearance of algebraic singularities in the symbol alphabet of scattering amplitudes in the context of planar super Yang-Mills theory. We argue that…
Tropical Grassmannians, cluster algebras and scattering amplitudes
James Drummond, Jack Foster, Ömer Gürdoğan +1
We provide a cluster-algebraic approach to the computation of the recently introduced generalised biadjoint scalar amplitudes related to Grassmannians . A finite clu…
Elimination and recursions in the scattering equations
Carlos Cardona, Chrysostomos Kalousios
We use the elimination theory to explicitly construct the (n-3)! order polynomial in one of the variables of the scattering equations. The answer can be given either in terms of a…
Comments on the evaluation of massless scattering
Carlos Cardona, Chrysostomos Kalousios
The goal of this work is threefold. First, we give an expression of the most general five point integral on M_{0,n} in terms of Chebyshev polynomials. Second, we choose a special k…
Scattering equations, generating functions and all massless five point tree amplitudes
Chrysostomos Kalousios
We argue that one does not need to know the explicit solutions of the scattering equations in order to evaluate a given amplitude. We consider the most general quantity consistent…
Next to subleading soft-graviton theorem in arbitrary dimensions
Chrysostomos Kalousios, Francisco Rojas
We study the soft graviton theorem recently proposed by Cachazo and Strominger. We employ the Cachazo, He and Yuan formalism to show that the next to subleading order soft factor f…
Massless scattering at special kinematics as Jacobi polynomials
Chrysostomos Kalousios
We study the scattering equations recently proposed by Cachazo, He and Yuan in the special kinematics where their solutions can be identified with the zeros of the Jacobi polynomia…
Generating string solutions in BTZ
Justin R. David, Chrysostomos Kalousios, Abhishake Sadhukhan
Integrability of classical strings in the BTZ black hole enables the construction and study of classical string propagation in this background. We first apply the dressing method t…
Quantization of AdS x S particle in static gauge
George Jorjadze, Chrysostomos Kalousios, Zurab Kepuladze
We quantize the particle dynamics in AdS_{N+1} x S^M spacetime in static gauge, which leads to the coordinate representation with wave functions depending only on spatial coordinat…
Dressed Wilson Loops on S^2
Chrysostomos Kalousios, Donovan Young
We present a new, two-parameter family of string solutions corresponding to the holographic duals of specific 1/8-BPS Wilson loops on S^2 in N = 4 supersymmetric Yang-Mills theory.…
Coordinate representation of particle dynamics in AdS and in generic static spacetimes
Harald Dorn, George Jorjadze, Chrysostomos Kalousios +1
We discuss the quantum dynamics of a particle in static curved spacetimes in a coordinate representation. The scheme is based on the analysis of the squared energy operator E^2, wh…
Vacuum type space-like string surfaces in AdS_3 x S^3
Harald Dorn, George Jorjadze, Chrysostomos Kalousios +2
We construct and classify all space-like minimal surfaces in AdS_3 x S^3 which globally admit coordinates with constant induced metric on both factors. Up to O(2,2) x O(4) transfor…
Giant Magnons in Symmetric Spaces: Explicit N-soliton solutions for CP^n, SU(n) and S^n
Chrysostomos Kalousios, Georgios Papathanasiou
Giant magnons are one of the main manifestations of integrability on the string theory side of the AdS/CFT correspondence. Motivated by the recent advances in their study, especial…
Space-like minimal surfaces in AdS x S
Harald Dorn, Nadav Drukker, George Jorjadze +1
We present a four parameter family of classical string solutions in AdS_3 x S^3, which end along a light-like tetragon at the boundary of AdS_3 and carry angular momentum along two…
Factorized Tree-level Scattering in AdS_4 x CP^3
Chrysostomos Kalousios, C. Vergu, Anastasia Volovich
AdS_4/CFT_3 duality relating IIA string theory on AdS_4 x CP^3 to N=6 superconformal Chern-Simons theory provides an arena for studying aspects of integrability in a new potentiall…
Dressed Giant Magnons on CP^3
Chrysostomos Kalousios, Marcus Spradlin, Anastasia Volovich
A new example of AdS/CFT duality relating IIA string theory on AdS_4 x CP^3 to N=6 superconformal Chern-Simons theory has recently been provided by ABJM. By now a number of papers…
Exact solutions for N-magnon scattering
Chrysostomos Kalousios, Georgios Papathanasiou, Anastasia Volovich
Giant magnon solutions play an important role in various aspects of the AdS/CFT correspondence. We apply the dressing method to construct an explicit formula for scattering states…
Generating AdS String Solutions
Antal Jevicki, Kewang Jin, Chrysostomos Kalousios +1
We use a Pohlmeyer type reduction to generate classical string solutions in AdS spacetime. In this framework we describe a correspondence between spikes in AdS_3 and soliton profil…
Dressing the Giant Gluon
Antal Jevicki, Chrysostomos Kalousios, Marcus Spradlin +1
We demonstrate the applicability of the dressing method to the problem of constructing new classical solutions for Euclidean worldsheets in anti-de Sitter space. The motivation ste…
Dressing the Giant Magnon II
Chrysostomos Kalousios, Marcus Spradlin, Anastasia Volovich
We extend our earlier work by demonstrating how to construct classical string solutions describing arbitrary superpositions of scattering and bound states of dyonic giant magnons o…