Št. zadetkov: 8
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:
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)