| Texto completo | |
| Autor(es): |
Aquino, Rui
;
Silvano, Nathan O.
;
Barci, Daniel G.
Número total de Autores: 3
|
| Tipo de documento: | Artigo Científico |
| Fonte: | PHYSICAL REVIEW B; v. 110, n. 8, p. 8-pg., 2024-08-23. |
| Resumo | |
Electronic fluids can display exciting dynamical properties. In particular, due to Landau damping, the collective-mode spectrum of an electronic system with multipolar interactions is non-Hermitian, and can present non-Hermitian degeneracies called exceptional points. In this work, we want to explore the dynamical properties of these degeneracies using laser control. We show that by using a light pulse, we can control the collective-mode spectrum and tune a non-Hermitian PT phase transition in which two exceptional points annihilate each other. At this transition, the gap closes with a cubic root signature, which defines a third-order exceptional point. (AU) | |
| Processo FAPESP: | 23/05765-7 - Flutuações e não-hermiticidade em materiais nemáticos |
| Beneficiário: | Rui Aquino dos Santos da Silva |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |