Myron Kampitakis
International Hellenic University
Quantum chromodynamicsPhysicsStatistical physicsCrossoverCriticalitySpontaneous symmetry breakingTachyonic fieldPosition (vector)Critical point (thermodynamics)Phase transitionPhase spaceEuclidean spaceCritical phenomenaSymmetry breakingPopulationMathematicsMathematical physicsAutocorrelationFixed pointQuantum mechanicsMinkowski space
16Publications
2H-index
10Citations
Publications 14
Newest
#2Fotios K. DiakonosH-Index: 13
Last. Stelios M. PotirakisH-Index: 17
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#2M. P. HaniasH-Index: 14
Last. Georgios BalasisH-Index: 21
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This paper presents our study of the presence of the unstable critical point in spontaneous symmetry breaking (SSB) in the framework of Ginzburg–Landau (G-L) free energy. Through a 3D Ising spin lattice simulation, we found a zone of hysteresis where the unstable critical point continued to exist, despite the system having entered the broken symmetry phase. Within the hysteresis zone, the presence of the kink–antikink SSB solitons expands and, therefore, these can be observed. In scalar field th...
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In this brief, the spontaneous symmetry breaking (SSB) of the \varphi^4theory in phase space, is studied. This phase space results from the appropriate system of Poincare maps, produced in both the Minkowski and the Euclidean time. The importance of discretization in the creation of phase space, is highlighted. A series of interesting, novel, unknown behaviors are reported for the first time; among them the most characteristic is the change in stability. In specific, the stable fixed points o...
1 CitationsSource
#1Yiannis Contoyiannis (UWest: University of the West)H-Index: 19
#2Stavros G. Stavrinides (International Hellenic University)H-Index: 10
Last. E. K. Kosmidis (A.U.Th.: Aristotle University of Thessaloniki)H-Index: 1
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Recently, it has been successfully shown that the temporal evolution of the fraction of COVID-19 infected people possesses the same dynamics as the ones demonstrated by a self-organizing diffusion model over a lattice, in the frame of universality. In this brief, the relevant emerging dynamics are further investigated. Evidence that this nonlinear model demonstrates critical dynamics is scrutinized within the frame of the physics of critical phenomena. Additionally, the concept of criticality ov...
2 CitationsSource
#1Yiannis Contoyiannis (UoA: National and Kapodistrian University of Athens)H-Index: 19
Last. Myron KampitakisH-Index: 2
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A device consisting of an array of coaxial, identical, circular rings behaves like a solenoid when the ratio of its radius and distance between two successive rings is higher than 1. As this ratio decreases, the device significantly deviates from the solenoid behavior. At the same time, a diffraction-like phenomenon for the magnetic field appears when currents of random direction flow through the rings. This phenomenon demonstrates critical behavior. Thus, an extension of the diffraction phenome...
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#1Yiannis Contoyiannis (UWest: University of the West)H-Index: 19
#2Pericles Papadopoulos (UWest: University of the West)H-Index: 1
Last. N. L. Matiadou (UWest: University of the West)
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We express the Kirchhoff wave equation in terms of classic field theory. This permits us to introduce the spontaneous symmetry breaking phenomenon in the study of linear structures, such as strings in order to investigate the existence of solitons solutions. We find ϕ4 solitons in the space of spatial gradient of lateral displacement of a string. This helps us detect stable states in deformations of strings.
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#1Yiannis Contoyiannis (UWest: University of the West)H-Index: 19
#1Yiannis Contoyiannis (UWest: University of the West)H-Index: 4
Last. Stelios M. PotirakisH-Index: 17
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The self-organizing mechanism is a universal approach that is widely followed in nature. In this work, a novel self-organizing model describing diffusion over a lattice is introduced. Simulation results for the model's active lattice sites demonstrate an evolution curve that is very close to those describing the evolution of infected European populations by COVID-19. The model was further examined against real data regarding the COVID-19 epidemic for seven European countries (with a total popula...
5 CitationsSource
#1Y. ContoyiannisH-Index: 1
Last. S. PotirakisH-Index: 1
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The previously introduced model of self-organized criticality, is adapted in the case of a virus-induced epidemic. The study presented in the following lines, highlights the critical value of virus density over a population. For low values of the initial virus density (lower than the critical value) it is proved that the virus-diffusion behavior safe and it is quantitatively similar to usual real epidemical data. The study reveals that very close to the critical point, the critical slowing-down ...
#2Fotis K. DiakonosH-Index: 26
Last. Myron KampitakisH-Index: 2
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In this work we apply the Method of Critical Fluctuations (MCF)on human Electrocardiogram (ECG) time-series. The method is able to reveal critical characteristics, in terms of physical behavior, in experimentally recorded signals. Using the concept of criticality as basic criterion for the characterization of the recorded ECG as that of a healthy person, we find a 100% verification of the characterization Myocardial infarction. In contrary in the cases of the characterization Healthy control we ...