BROWSE

Related Scientist

Researcher

강상관계 물질 연구단
강상관계 물질 연구단
more info

Kibble–Zurek universality in a strongly interacting Fermi superfluid

Cited 0 time in webofscience Cited 0 time in scopus
15 Viewed 3 Downloaded
Title
Kibble–Zurek universality in a strongly interacting Fermi superfluid
Author(s)
Bumsuk Ko; Jee Woo Park; Y. Shin
Publication Date
2019-12
Journal
NATURE PHYSICS, v.15, no., pp.1227 - 1231
Publisher
NATURE PUBLISHING GROUP
Abstract
© 2019, The Author(s), under exclusive licence to Springer Nature Limited.The Kibble–Zurek mechanism describes the spontaneous formation of topological defects in a system crossing a continuous phase transition1,2. Its central premise is the notion of universality, which states that the characteristic scaling exponent describing the dependence of the defect density on the quench rate is determined by the underlying symmetries of the system. Whether this universality can be extended to strongly interacting systems, such as a unitary Fermi gas, is an open question that has recently drawn attention in the context of holographic theories3,4. Here, we report the observation of the Kibble–Zurek universality in a strongly interacting Fermi superfluid. As the microscopic nature of superfluidity is tuned from Bose–Einstein condensation of tightly bound molecules to Bardeen–Cooper–Schrieffer superfluidity of long-range fermion pairs, the thermal quench formation of vortices reveals a constant scaling exponent arising from the U(1) gauge symmetry of the system. In rapid quenches, destructive vortex collisions lead to the saturation of vortex densities, the values of which can be universally scaled by the interaction-dependent area of the vortex cores. This work paves the way for precision studies of non-equilibrium dynamics in a highly tunable, strongly correlated many-fermion system5,6
URI
https://pr.ibs.re.kr/handle/8788114/6758
ISSN
1745-2473
Appears in Collections:
Center for Correlated Electron Systems(강상관계 물질 연구단) > Journal Papers (저널논문)
Files in This Item:
70448_Kibble–Zurek universality in a strongly interacting Fermi superfluid.pdfDownload

qrcode

  • facebook

    twitter

  • Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
해당 아이템을 이메일로 공유하기 원하시면 인증을 거치시기 바랍니다.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse