Št. zadetkov: 9
Izvirni znanstveni članek
Oznake:
dinamični sistemi;teoretična fizika;dynamical systems;theoretical physics;
We introduce a class of integrable dynamical systems of interacting classical matrixvalued fields propagating on a discrete space-time lattice, realized as many-body circuits built from elementary symplectic two-body maps. The models provide an efficient integrable Trotterization of non- relativisti ...
Leto:
2020
Vir:
Fakulteta za matematiko in fiziko (UL FMF)
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Oznake:
statistična fizika;nelinearna dinamika;difuzija;statistical physics;nonlinear dynamics;diffusion;
We discuss general features of charge transport in nonrelativistic classical field theories invariant under non-Abelian unitary Lie groups by examining the full structure of two-point dynamical correlation functions in grand-canonical ensembles at finite charge densities (polarized ensembles). Upon ...
Leto:
2020
Vir:
Fakulteta za matematiko in fiziko (UL FMF)
Magistrsko delo
Oznake:
neravnovesna statistična fizika;solitoni;RCA54;integrabilnost;posplošena hidrodinamika;transportne fluktuacije;balistična fluktuacijska teorija;fluktuacijska zveza Gallavotti-Cohen;
V magistrskem delu obravnavamo makroskopske fluktuacije transporta solitonov v reverzibilnem celičnem avtomatu pravilo 54, ki predstavlja enega izmed najbolj preprostih modelov integrabilne solitonske dinamike. Za opis makroskopske dinamike kiralnih solitonov uporabimo računsko ogrodje posplošene hi ...
Leto:
2024
Vir:
Fakulteta za matematiko in fiziko (UL FMF)
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Oznake:
teoretična fizika;integrabilni modeli;theoretical physics;integrable models;
Weconstruct an integrable lattice model of classical interacting spins in discrete spacetime, representing a discrete-time analogue of the lattice Landau-Lifshitz ferromagnet with uniaxial anisotropy. As an application we use this explicit discrete symplectic integration scheme to compute the spin D ...
Leto:
2021
Vir:
Fakulteta za matematiko in fiziko (UL FMF)
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Oznake:
statistična mehanika;statistical mechanics;
Recent studies have found that fluctuations of magnetization transfer in integrable spin chains violate the central limit property. Here, we revisit the problem of anomalous counting statistics in the Landau-Lifshitz field theory by specializing to two distinct anomalous regimes featuring a dynamica ...
Leto:
2024
Vir:
Fakulteta za matematiko in fiziko (UL FMF)
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Oznake:
kvantna statistična mehanika;neravnovesna statistična mehanika;difuzija;quantum statistical mechanics;nonequilibrium statistical mechanics;diffusion;
We identify a class of one-dimensional spin and fermionic lattice models which display diverging spin and charge diffusion constants, including several paradigmatic models of exactly solvable strongly correlated many-body dynamics such as the isotropic Heisenberg spin chains, the FermiHubbard model, ...
Leto:
2018
Vir:
Fakulteta za matematiko in fiziko (UL FMF)
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Oznake:
statistična fizika;statistical physics;
Introducing a general class of one-dimensional single-file systems (meaning that particle crossings are prohibited) of interacting hardcore particles with internal degrees of freedom (called charge), we exhibit a dynamical universality reflected in anomalous statistical properties of macroscopic flu ...
Leto:
2024
Vir:
Fakulteta za matematiko in fiziko (UL FMF)
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Oznake:
neravnovesna statistična mehanika;kvantna mehanika;večdelčni sistemi;nonequilibrium statistical mechanics;quantum mechanics;many-body systems;
Introducing a class of SU(2) invariant quantum unitary circuits generating chiral transport, we examine the role of broken space-reflection and time-reversal symmetries on spin-transport properties. Upon adjusting parameters of local unitary gates, the dynamics can be either chaotic or integrable. T ...
Leto:
2024
Vir:
Fakulteta za matematiko in fiziko (UL FMF)
Izvirni znanstveni članek
Oznake:
integrabilnost;integrabilni sistemi;solitoni;integrability;integrable systems;solitons;
We introduce classical many-body dynamics on a one-dimensional lattice comprising local two-body maps arranged on discrete space-time mesh that serve as discretizations of Hamiltonian dynamics with arbitrarily time-varying coupling constants. Time evolution is generated by passing an auxiliary degre ...
Leto:
2025
Vir:
Fakulteta za matematiko in fiziko (UL FMF)