Anisotropy-induced Coulomb phase and quasiparticle zoo in the atomic
monopole-spin hybrid system
- URL: http://arxiv.org/abs/2311.14277v1
- Date: Fri, 24 Nov 2023 04:41:38 GMT
- Title: Anisotropy-induced Coulomb phase and quasiparticle zoo in the atomic
monopole-spin hybrid system
- Authors: Shao-Jun Li, Xiang Gao, Xue-Ting Fang, Lushuai Cao, Peter Schmelcher,
and Zhong-Kun Hu
- Abstract summary: Quantum simulation of a monopole-spin hybrid system is performed on basis of a dipolar ultracold gas in a ladder lattice.
The hopping of the atoms induces a particle conversion process between spin and monopole pairs.
- Score: 5.425449284115749
- License: http://creativecommons.org/licenses/by-sa/4.0/
- Abstract: Quantum simulation of a monopole-spin hybrid system is performed on basis of
a dipolar ultracold gas in a ladder lattice. The site-occupation states of the
dipolar ladder lattice gas can spontaneously emulate both the monopole and spin
excitations. The hopping of the atoms induces a particle conversion process
between spin and monopole pairs, and the dipole-dipole interaction determines
the spin-spin, spin-monopole and monopole-monopole interactions. The
anisotropic nature of the dipole-dipole interaction allows hereby for a
flexible engineering of the designed hybrid system, and for a significant
tunability of the interaction strengths. As a result, we encounter a rich phase
diagram, and specifically a self-assembled Coulomb phase arises, in which
monopoles and spins coexist and are orderly arranged according to the local
Gauss's law. The Coulomb phase hosts a zoo of different types of
quasiparticles, and provides the possibility to simulate various phenomena in
particle physics, such as a degenerate vacuum, particle decay and conversion
processes. Our work provides a significant extension of the scope of quantum
simulations based on the anisotropy of dipolar interactions.
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