SU(3) quantum spin ladders as a regularization of the CP(2) model at non-zero density: From classical to quantum simulation

Evans, Wynne; Gerber, Urs; Hornung, Manes; Wiese, Uwe-Jens (2018). SU(3) quantum spin ladders as a regularization of the CP(2) model at non-zero density: From classical to quantum simulation. Annals of physics, 398, pp. 94-122. Elsevier 10.1016/j.aop.2018.09.002

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Quantum simulations would be highly desirable in order to investigate the finite density physics of QCD. (1+)-d CP(N-1) quantum field theories are toy models that share many important features of QCD: they are asymptotically free, have a non-perturbatively generated massgap, as well as 0-vacua. SU(N) quantum spin ladders provide an unconventional regularization of CP(N-1) models that is well-suited for quantum simulation with ultracold alkaline-earth atoms in an optical lattice. In order to validate future quantum simulation experiments of CP(2) models at finite density, here we use quantum Monte Carlo simulations on classical computers to investigate SU(3) quantum spin ladders at non-zero chemical potential. This reveals a rich phase structure, with single- or double-species Bose–Einstein "condensates", with or without ferromagnetic order.

Item Type:

Journal Article (Original Article)

Division/Institute:

10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC)
08 Faculty of Science > Institute of Theoretical Physics

UniBE Contributor:

Evans, Wynne; Gerber, Urs; Hornung, Manes and Wiese, Uwe-Jens

Subjects:

500 Science > 530 Physics

ISSN:

0003-4916

Publisher:

Elsevier

Language:

English

Submitter:

Esther Fiechter

Date Deposited:

30 Jan 2019 08:47

Last Modified:

14 Dec 2019 18:56

Publisher DOI:

10.1016/j.aop.2018.09.002

ArXiv ID:

1803.04767

BORIS DOI:

10.7892/boris.125510

URI:

https://boris.unibe.ch/id/eprint/125510

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