128 citations · 185 across the 5 of their papers we have counts for
5 papers
An Extended Benchmarking of Multi-Agent Reinforcement Learning Algorithms in Complex Fully Cooperative Tasks
George Papadopoulos, Andreas Kontogiannis, Foteini Papadopoulou +3
Multi-Agent Reinforcement Learning (MARL) has recently emerged as a significant area of research. However, MARL evaluation often lacks systematic diversity, hindering a comprehensi…
New half supersymmetric solutions of the heterotic string
George Papadopoulos
We describe all supersymmetric solutions of the heterotic string which preserve 8 supersymmetries and show that are distinguished by the holonomy, , of the c…
Kappa symmetry, generalized calibrations and spinorial geometry
G. Papadopoulos, P. Sloane
We extend the spinorial geometry techniques developed for the solution of supergravity Killing spinor equations to the kappa symmetry condition for supersymmetric brane probe confi…
The holonomy of the supercovariant connection and Killing spinors
G. Papadopoulos, D. Tsimpis
We show that the holonomy of the supercovariant connection for M-theory backgrounds with Killing spinors reduces to a subgroup of $SL(32-N,\bR)\st (\oplus^N \bR^{32-N})$. We us…
Solvable model of strings in a time-dependent plane-wave background
G. Papadopoulos, J. G. Russo, A. A. Tseytlin
We investigate a string model defined by a special plane-wave metric ds^2 = 2dudv - l(u) x^2 du^2 + dx^2 with l(u) = k/u^2 and k=const > 0. This metric is a Penrose limit of some c…