Yiannis Contoyiannis
University of the West
Particle physicsMagnetic fieldQuantum chromodynamicsPhysicsStatistical physicsCriticalitySpontaneous symmetry breakingGeologyCritical point (thermodynamics)Phase transitionCritical exponentSeismologyField (physics)Critical phenomenaSymmetry breakingCondensed matter physicsIntermittencyMathematicsFracture (geology)Ising modelRenormalization groupGeophysicsPower law
Publications 64
#1N. G. Antoniou (UoA: National and Kapodistrian University of Athens)H-Index: 18
#1N. G. Antoniou (UoA: National and Kapodistrian University of Athens)H-Index: 1
Last. Fotis K. DiakonosH-Index: 26
view all 3 authors...
A critical point of second order, belonging to the universality class of the 3d Ising model, has recently been advocated as a strong candidate for the critical behaviour (at high temperatures) of QCD with non-zero quark masses. The implications of this conjecture are investigated in the multiparticle environment of high-energy collisions. A universal intermittency pattern of pion-density fluctuations is found, at the critical point, and its association to the critical exponents is discussed. A M...
18 CitationsSource
We investigate the geometry of the critical fluctuations for a general system undergoing a thermal second order phase transition. Adopting a generalized effective action for the local description of the fluctuations of the order parameter at the critical point (T=T_c we show that instanton-like configurations, corresponding to the minima of the effective action functional, build up clusters with fractal geometry characterizing locally the critical fluctuations. The connection between the corr...
21 CitationsSource
#1N. G. AntoniouH-Index: 18
Last. M. LahanasH-Index: 1
view all 5 authors...
The role of strange quark mass in chiral QCD phase transition is examined, in the environment of relativistic nuclear collisions. The term in the effective potential of the O(4) universality class satisfies the stability requirement for a tricritical behaviour and can be used in order to study critical fluctuations in either side of the tricritical point . Comparing the corresponding patterns of density fluctuations in rapidity, one may distinguish the effects due to first- or second-order phase...
1 CitationsSource