Banca de QUALIFICAÇÃO: MURILLO SPADIN DOMINGUES
Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.STUDENT : MURILLO SPADIN DOMINGUES
DATE: 31/10/2022
TIME: 14:00
LOCAL: Sala virtual do GMeet
TITLE:
Analog Gravity and Vorticity
PAGES: 1
BIG AREA: Ciências Exatas e da Terra
AREA: Física
SUBÁREA: Física Geral
SPECIALTY: Relatividade e Gravitação
SUMMARY:
Black holes follow general relativity since the dawning of its formulation. Although there have been theoretical developments in the description of these objects in the last century, its experimental observations are still limited. Analogue gravity intends to fill this gap, allowing for a myriad of physical systems feasible in the lab that emulate gravitational effects. In particular, these analogies enable the experimental realization of sonic black holes which share similarities with astrophysical black holes. The first modern gravitational analogy was proposed by Unruh in the 80s and is based on the propagation of sound waves in a barotropic, ideal, irrotational fluid. Since the proposal of the hydrodynamic model, the field has experienced the emergence of several other analogies. Under suitable conditions, hydrodynamic gravitational analogies exhibit properties of Kerr black holes, like superradiance and the presence of quasinormal modes. Other models display different analog gravitational phenomena. For example, in Bose-Einstein condensates the perturbations are described by quantized fields, which allows for a configuration that emits Hawking radiation. In this work we consider the effect of vorticity on the hydrodynamic analogy, i.e., we drop the assumption of an irrotational flow. When we do that, the analogy between the hydrodynamics and gravity is lost. This hypothesis is justifiable from the fact that real physical systems are not vorticity free. Our objective is to explore if the effects that arise in the hydrodynamic analogy also show up in the presence of vorticity.
BANKING MEMBERS:
Presidente - Interno ao Programa - 1671599 - MARCOS DE ABREU AVILA
Membro Titular - Examinador(a) Interno ao Programa - 1574260 - ROLDAO DA ROCHA JUNIOR
Membro Titular - Examinador(a) Externo ao Programa - 1676807 - RAFAEL RIBEIRO DIAS VILELA DE OLIVEIRA
Membro Suplente - Examinador(a) Interno ao Programa - 382324 - VILSON TONIN ZANCHIN