Št. zadetkov: 11
Izvirni znanstveni članek
Oznake:
relativistična hidrodinamika;kinetična teorija;transportni pojavi;relativistic hydrodynamics;kinetic theory;transport phenomena;
Correlators at finite density and temperature encode important information about a physical system, such as transport and causality. For a massive gas of particles in the relaxation time approximation of kinetic theory, we provide complete analytic results for all first order transport coefficients, ...
Leto:
2025
Vir:
Fakulteta za matematiko in fiziko (UL FMF)
Magistrsko delo
Oznake:
kinetična teorija;relativistična hidrodinamika;termalni korelatorji;analitična struktura;transportni pojavi;termalizacija;linearni odziv;konformna plazma;
V tem delu v okviru relativistične kinetične teorije in relativistične hidrodinamike izračunamo vse retardirane termalne korelatorje termoelektrično sklopljene konformne plazme, pri končni gostoti $U(1)$ naboja ter ob prisotnosti relaksacije gibalne količine. Izračun v kinetični teoriji je opravljen ...
Leto:
2024
Vir:
Fakulteta za matematiko in fiziko (UL FMF)
Izvirni znanstveni članek
Oznake:
thermal field theory;field theory hydrodynamics;
The relaxation time approximation (RTA) of the kinetic Boltzmann equation is likely the simplest window into the microscopic properties of collective real-time transport. Within this framework, we analytically compute all retarded two-point Green’s functions of the energy-momentum tensor and a conse ...
Leto:
2024
Vir:
Fakulteta za matematiko in fiziko (UL FMF)
Magistrsko delo
Oznake:
relativistic hydrodynamics;hydrodynamic attractors;order parameter;symmetry-breaking potential;superfluids;Bjorken flow;Gubser flow;FLRW background;Müller-Israel-Stewart formalism;Son-Nicolis framework;
Recent theoretical studies of an expanding quark-gluon plasma, utilizing the Müller-Israel-Stewart formalism, have given rise to the concept of hydrodynamic attractors in relativistic viscous hydrodynamics. In parallel, the Son-Nicolis framework has elucidated the relation between fields and thermod ...
Leto:
2024
Vir:
Fakulteta za matematiko in fiziko (UL FMF)
Izvirni znanstveni članek
Oznake:
efektivna teorija polja;fazni prehodi;spontani zlom simetrije;relativistična hidrodinamika;effective field theory;phase transitions;spontaneous symmetry breaking;relativistic hydrodynamics;
We determine the behavior of an out-of-equilibrium superfluid, composed of a U(1) Goldstone mode coupled to hydrodynamic modes in a Müller-Israel-Stewart theory, in expanding backgrounds relevant to heavy ion collision experiments and cosmology. For suitable initial conditions, the evolution of the ...
Leto:
2025
Vir:
Fakulteta za matematiko in fiziko (UL FMF)
Izvirni znanstveni članek
Oznake:
difuzija;hidrodinamika;efektivna teorija polja;diffusion;hydrodynamics;effective field theory;
Diffusion is a dissipative transport phenomenon ubiquitously present in nature. Its details can now be analyzed with modern effective field theory (EFT) techniques that use the closed-time-path (or Schwinger-Keldysh) formalism. We discuss the structure of the diffusive effective action appropriate f ...
Leto:
2024
Vir:
Fakulteta za matematiko in fiziko (UL FMF)
Izvirni znanstveni članek
Oznake:
relativistična hidrodinamika;Gubserjev tok;relativistic hydrodynamics;Gubser flow;
Gubser flow is an evolution with cylindrical and boost symmetries, which can be best studied by mapping the future wedge of Minkowski space (R$^{3,1}$) to dS$_3$ × ℝ in a conformal relativistic theory. Here, we sharpen our previous analytic results and validate them via the first numerical explorati ...
Leto:
2024
Vir:
Fakulteta za matematiko in fiziko (UL FMF)
Izvirni znanstveni članek
Oznake:
fizika visokih energij;statistična mehanika;teorija polja;hidrodinamika;high energy physics;statistical mechanics;field theory hydrodynamics;
Semi-holography provides a formulation of dynamics in gauge theories involving both weakly self-interacting (perturbative) and strongly self-interacting (non-perturbative) degrees of freedom. These two subsectors interact via their effective metrics and sources, while the full local energy-momentum ...
Leto:
2026
Vir:
Fakulteta za matematiko in fiziko (UL FMF)
Izvirni znanstveni članek
Oznake:
relativistic hydrodynamics;field theory hydrodynamics;non-equilibrium field theory;Quark-Gluon plasma;
Hybrid fluid models, consisting of two sectors with more weakly and more
strongly self-interacting degrees of freedom coupled consistently as in the semi-holographic
framework, have been shown to exhibit an attractor surface for Bjorken flow. Retaining only
the simple viscid fluid descriptions of ...
Leto:
2024
Vir:
Fakulteta za matematiko in fiziko (UL FMF)
Izvirni znanstveni članek
Oznake:
fizika visokih energij;kritični pojavi;kvantna kromodinamika;fazni prehodi;high energy physics;critical phenomena;quantum chromodynamics;phase transitions;
We present a detailed numerical and analytical study of the out-of-equilibrium dynamics of Model G, the dynamical universality class relevant to the chiral phase transition. We perform numerical 3D stochastic (Langevin) simulations of the O(4) critical point for large lattices in the chiral limit. W ...
Leto:
2025
Vir:
Fakulteta za matematiko in fiziko (UL FMF)