Investigation of heterogeneity effects in network models

PhD típus: 
Fizikai Tudományok Doktori Iskola
Év: 
2024/2025/2
Munkahely neve: 
Centre for Energy Research (EK)
Munkahely címe: 
1121 Budapest, Konkoly-Thege Miklós út 29-33.
Leírás: 

Network inhomogeneities can strongly affect the critical dynamics of spreading models if the graph dimension is finite, causing large fluctuations and nonuniversal power-laws in extended control parameter spaces. This provides an alternative and an extension of self-organized criticality, observed in nature very frequently. These Griffiths Effects (GE) are generated by rare-regions and can be observed even in finite scale-free graphs. Real networks are very often modular, that may enhance GE-s and may lead to true Griffiths phases, where the fluctuations diverge. Participation in the research of GE-s in various network models with large scale simulations or by other methods would be the target of this topic.  Besides spreading models of infromation and diseases, we study synchronisation transitions in brain and in power-grid models, where frustrated synchronization and chimera states emerge. Usage an development of Kuramoto equation solvers, for power-grid cascade faliure simualtion is planned. GPU based simulations of critical connectome and power-grid models is targeted within international collaboration.

Elvárások: 

Fluent in English, C programming practice, good knowledge in statistical physics,

Állapot: 
Végleges
Témavezető
Név: 
ÓDOR Géza
Email cím: 
odor.geza@ek.hun-ren.hu
Intézet: 
Centre for Energy Research (EK)
Beosztás: 
Scientific Advisor
Tudományos fokozat: 
DSc
Konzulens
Név: 
János Török
Email cím: 
torok.janos@ttk.bme.hu
Intézet: 
Department of Theoretical Physics, Institute of Physics
Beosztás: 
Associate professor
Tudományos fokozat: 
PhD
Stipendicum Hungaricum: 
No