We investigate the nonequilibrium dynamics of a class of isolated one-dimensional systems possessing two degenerate ground states, initialized in a low-energy symmetric phase. We report the emergence of a timescale separation between fast (radiation) and slow (kink or domain wall) degrees of freedom. We find a universal long-time dynamics, largely independent of the microscopic details of the system, in which the kinks control the relaxation of relevant observables and correlations. The resulting late-time dynamics can be described by a set of phenomenological equations, which yield results in excellent agreement with the numerical tests.
Universal late-time dynamics in isolated one-dimensional statistical systems with topological excitations / Bastianello, A.; Chiocchetta, A.; Cugliandolo, L. F.; Gambassi, A.. - In: PHYSICAL REVIEW. B. - ISSN 2469-9950. - 101:10(2020), pp. 1-19. [10.1103/PhysRevB.101.104313]
Universal late-time dynamics in isolated one-dimensional statistical systems with topological excitations
Gambassi A.
2020-01-01
Abstract
We investigate the nonequilibrium dynamics of a class of isolated one-dimensional systems possessing two degenerate ground states, initialized in a low-energy symmetric phase. We report the emergence of a timescale separation between fast (radiation) and slow (kink or domain wall) degrees of freedom. We find a universal long-time dynamics, largely independent of the microscopic details of the system, in which the kinks control the relaxation of relevant observables and correlations. The resulting late-time dynamics can be described by a set of phenomenological equations, which yield results in excellent agreement with the numerical tests.File | Dimensione | Formato | |
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