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Št. zadetkov: 2
Quantum origin of Ohm’s reciprocity relation and its violation: conductivity as inverse resistivity
Giorgio Frangi, Sašo Grozdanov
Izvirni znanstveni članek
Oznake: električna prevodnost;električna upornost;kvantna fizika;teorija polja;electrical conductivity;electrical resistivity;quantum physics;field theory;
Conventional wisdom teaches us that the electrical conductivity in a material is the inverse of its resistivity. In this work, we show that, when both of these transport coefficients are defined in linear response through the Kubo formulas as two-point correlators of conserved currents in quantum fi ...
Leto: 2025 Vir: Fakulteta za matematiko in fiziko (UL FMF)
Wilsonian renormalization group and thermal field theory in the Schwinger-Keldysh closed-time-path formalism
Giorgio Frangi, Sašo Grozdanov
Izvirni znanstveni članek
Oznake: renormalizacijska grupa;teorija polja;efektivna teorija polja;kritični pojavi;renormalization group;effective field theory;finite temperature field theory;critical phenomena;
We study perturbative Wilsonian renormalization group (RG) for the scalar $\phi^4$ theory at finite temperature to one loop order in the Schwinger-Keldysh closed-time-path (CTP) formalism. By explicitly integrating out the UV modes, we show how effective interactions coupling the two branches of the ...
Leto: 2025 Vir: Fakulteta za matematiko in fiziko (UL FMF)
Št. zadetkov: 2
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