Banca de DEFESA: RAFAEL ÁVILA MACÊDO

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : RAFAEL ÁVILA MACÊDO
DATE: 11/03/2022
TIME: 14:00
LOCAL: Plataforma Google Meet
TITLE:

Chiral phases and Landau-forbidden transitions in one dimension

KEY WORDS:

Chiral phase, Deconfined quantum criticality, Landau paradigm, Bosonization, Pseudospins

PAGES: 140
BIG AREA: Ciências Exatas e da Terra
AREA: Física
SUMMARY:

The common lore in statistical physics suggests that phases and transitions of matter are generally classified by what is called
the Landau-Ginzburg-Wilson paradigm. In two dimensions, however, quantum models can exhibit ``deconfined'' continuous
transitions between ordered phases, which are forbidden by the Landau classification. On this thesis, we introduce a one-
dimensional quantum spin model with three ordered phases: A chiral spin state, where the system orders into three-spin
``fluxes'', an antiferromagnetic state, and a novel phase which we denote as the Klein paramagnet. We find that all transitions
from the chiral phase are continuous and beyond the Landau paradigm.

BANKING MEMBERS:
Interno - 404927 - ALVARO FERRAZ FILHO
Externo à Instituição - FRANCISCO CASTILHO ALCARAZ - USP
Presidente - 1313663 - RODRIGO GONCALVES PEREIRA