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Título: | Relaxation time as a control parameter for exploring dynamical phase diagrams |
Autor: | Corps, Á.L. CSIC ORCID; Pérez-Fernández, Pedro; Relaño, Armando CSIC ORCID CVN | Palabras clave: | Quantum Physics Physics Statistical Mechanics |
Fecha de publicación: | 8-may-2023 | Editor: | American Physical Society | Citación: | Physical Review - Section B - Condensed Matter 108: 174305 (2023) | Resumen: | We explore a full dynamical phase diagram by means of a double quench protocol that depends on a relaxation time as the only control parameter. The protocol comprises two fixed quenches and an intermediate relaxation time that determines the phase in which the quantum state is placed after the final quench. We apply it to an anharmonic Lipkin-Meshkov-Glick model. This model displays two excited-state quantum phase transitions which split the spectrum into three different phases: two of them are symmetry-breaking phases, and one is a disordered phase. As a consequence, our protocol induces several kind of dynamical phase transitions. We characterize all of them in terms of the constants of motion characterizing all three phases of the model. | Descripción: | 17 pages, 8 figures | Versión del editor: | https://doi.org/10.1103/PhysRevB.108.174305 | URI: | http://hdl.handle.net/10261/347956 | DOI: | 10.1103/PhysRevB.108.174305 | ISSN: | 2469-9950 |
Aparece en las colecciones: | (CFMAC-IEM) Artículos |
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PhysRevB_ALCorps_et_al_2023.pdf | Artículo principal | 2,47 MB | Adobe PDF | Visualizar/Abrir |
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