37 citations · 259 across the 18 of their papers we have counts for
18 papers
Building transport models from baroclinic wave experimental data
M. Agaoglou, V. J. Garcia-Garrido, U. Harlander +1
In this paper we study baroclinic waves both from the experimental and the theoretical perspective. We obtain data from a rotating annulus experiment capable of producing a series…
Analysis of the spread of SARS-CoV-2 in a hospital isolation room using CFD and Lagrangian Coherent Structures
Narjisse Amahjour, Guillermo Garcia-Sanchez, Makrina Agaoglou +1
This research paper presents an analysis of the propagation of the SARS-CoV-2, or other similar pathogens, in a hospital isolation room using computational fluid dynamics (CFD) and…
New links between invariant dynamical structures and uncertainty quantification
Guillermo Garcia-Sanchez, Ana Maria Mancho, Makrina Agaoglou +1
This paper proposes a new uncertainty measure, appropriate for quantifying the performance of transport models in assessing the origin or source of a given observation. It is found…
Bifurcation of Dividing Surfaces Constructed from Period-Doubling Bifurcations of Periodic Orbits in a Caldera Potential Energy Surface
Matthaios Katsanikas, Makrina Agaoglou, Stephen Wiggins
In this work we analyze the bifurcation of dividing surfaces that occurs as a result of two period-doubling bifurcations in a 2D caldera-type potential. We study the structure, the…
Global dynamics visualisation from Lagrangian Descriptors. Applications to discrete and continuous systems
Jerome Daquin, Remi Pedenon-Orlanducci, Makrina Agaoglou +2
This paper introduces a new global dynamics and chaos indicator based on the method of Lagrangian Descriptor apt for discriminating ordered and deterministic chaotic motions in mul…
Phase space transport in a symmetric Caldera potential with three index-1 saddles and no minima
M. Katsanikas, M. Agaoglou, S. Wiggins +1
We apply the method of Lagrangian Descriptors (LDs) to a symmetric Caldera-type potential energy surface which has three index-1 saddles surrounding a relatively flat region that c…
The Influence of a Parameter that Controls the Asymmetry of a Potential Energy Surface with an Entrance Channel and Two Potential Wells
Makrina Agaoglou, Matthaios Katsanikas, Stephen Wiggins
In this paper we study an asymmetric valley-ridge inflection point (VRI) potential, whose energy surface (PES) features two sequential index-1 saddles (the upper and the lower), wi…
The time evolution of the trajectories after the selectivity in a symmetric potential energy surface with a post-transition-state bifurcation
Douglas Haigh, Matthaios Katsanikas, Makrina Agaoglou +1
Selectivity is an important phenomenon in chemical reaction dynamics. This can be quantified by the branching ratio of the trajectories that visit one or the other wells to the tot…
Bifurcation of dividing surfaces constructed from a pitchfork bifurcation of periodic orbits in a symmetric potential energy surface with a post-transition-state bifurcation
Matthaios Katsanikas, Makrina Agaoglou, Stephen Wiggins
In this work we analyze the bifurcation of dividing surfaces that occurs as a result of a pitchfork bifurcation of periodic orbits in a two degrees of freedom Hamiltonian System. T…
The bifurcations of the critical points and the role of the depth in a symmetric Caldera potential energy surface
Y. Geng, M. Katsanikas, M. Agaoglou +1
In this work, we continue the study of the bifurcations of the critical points in a symmetric Caldera potential energy surface. In particular, we study the influence of the depth o…
Visualizing the Phase Space of the HeI_2 van der Waals Complex using Lagrangian Descriptors
M. Agaoglou, V. J. Garcia-Garrido, M. Katsanikas +1
In this paper we demonstrate the capability of the method of Lagrangian descriptors to unveil the phase space structures that characterize transport in high-dimensional symplectic…
Revealing the phase space structure of Hamiltonian systems using the action
Francisco Gonzalez Montoya, Makrina Agaoglou, Matthaios Katsanikas
In this work, we analyse the properties of the Maupertuis' action as a tool to reveal the phase space structure for Hamiltonian systems. We construct a scalar field with the action…
From Poincare Maps to Lagrangian Descriptors: The Case of the Valley Ridge Inflection Point Potential
R. Crossley, M. Agaoglou, M. Katsanikas +1
In this paper we compare the method of Lagrangian descriptors with the classical method of Poincare maps for revealing the phase space structure of two degree-of-freedom Hamiltonia…
The Influence of a Pitchfork Bifurcation of the Critical Points of a Symmetric Caldera Potential Energy Surface on Dynamical Matching
Y. Geng, M. Katsanikas, M. Agaoglou +1
Many organic chemical reactions are governed by potential energy surfaces that have a region with the topographical features of a caldera. If the caldera has a symmetry then trajec…
Tuning the Branching Ratio in a Symmetric Potential Energy Surface with a Post-Transition State Bifurcation using External Time Dependence
V. J. García-Garrido, M. Katsanikas, M. Agaoglou +1
Chemical selectivity, as quantified by a branching ratio, is a phenomenon relevant for many organic chemical reactions. It may be exhibited on a potential energy surface that featu…
The Phase Space Mechanism for Selectivity in a Symmetric Potential Energy Surface with a Post-Transition-State Bifurcation
M. Agaoglou, V. J. Garcıa-Garrido, M. Katsanikas +1
Chemical selectivity is a phenomenon displayed by potential energy surfaces (PES) that is relevant for many organic chemical reactions whose PES feature a valley-ridge inflection p…
Phase Space Analysis of the Dynamics on a Potential Energy Surface with an Entrance Channel and Two Potential Wells
M. Katsanikas, V. J. García-Garrido, M. Agaoglou +1
In this paper we unveil the geometrical template of phase space structures that governs transport in a Hamiltonian system described by a potential energy surface with an entrance/e…
Exploring Isomerization Dynamics on a Potential Energy Surface with an Index-2 Saddle using Lagrangian Descriptors
Víctor J. García-Garrido, Makrina Agaoglou, Stephen Wiggins
In this paper we explore the phase space structures governing isomerization dynamics on a potential energy surface with four wells and an index-2 saddle. For this model, we analyze…