Pregled bibliografske jedinice broj: 563596
Loschmidt echo in one-dimensional interacting Bose gases
Loschmidt echo in one-dimensional interacting Bose gases // Physical Review A - Atomic, Molecular, and Optical Physics, 84 (2011), 6; 063601-1 doi:10.1103/PhysRevA.84.063601 (međunarodna recenzija, članak, znanstveni)
CROSBI ID: 563596 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Loschmidt echo in one-dimensional interacting Bose gases
Autori
Lelas, Karlo ; Ševa, Tomislav ; Buljan, Hrvoje
Izvornik
Physical Review A - Atomic, Molecular, and Optical Physics (1050-2947) 84
(2011), 6;
063601-1
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
Loschmidt echo; irreversibility; nonequilibrium dynamics
Sažetak
We explore Loschmidt echo in two regimes of one- dimensional interacting Bose gases: the strongly interacting Tonks-Girardeau (TG) regime, and the weakly interacting mean-field regime. We find that the Loschmidt echo of a TG gas decays as a Gaussian when small (random and time independent) perturbations are added to the Hamiltonian. The exponent is proportional to the number of particles and the magnitude of a small perturbation squared. In the mean-field regime the Loschmidt echo shows richer behavior: it decays faster for larger nonlinearity, and the decay becomes more abrupt as the nonlinearity increases ; it can be very sensitive to the particular realization of the noise potential, especially for relatively small nonlinearities.
Izvorni jezik
Engleski
Znanstvena područja
Fizika
POVEZANOST RADA
Projekti:
119-0000000-1015 - Nelinearne pojave i valna dinamika u fotoničkim sustavima (Buljan, Hrvoje, MZOS ) ( CroRIS)
Ustanove:
Prirodoslovno-matematički fakultet, Zagreb
