Sauter-Schwinger-like tunneling in tilted Bose-Hubbard lattices in the Mott phase
نویسندگان
چکیده
منابع مشابه
Superfluid to Mott-insulator transition in Bose-Hubbard models.
We study the superfluid-insulator transition in Bose-Hubbard models in one-, two-, and three-dimensional cubic lattices by means of a recently proposed variational wave function. In one dimension, the variational results agree with the expected Berezinskii-Kosterlitz-Thouless scenario of the interaction-driven Mott transition. In two and three dimensions, we find evidence that, across the trans...
متن کاملMott-Hubbard transition of cold atoms in optical lattices
We discuss the superfluid to Mott-insulator transition of cold atoms in optical lattices recently observed by Greiner et.al. (Nature 415, 39 (2002)). The fundamental properties of both phases and their experimental signatures are discussed carefully, including the limitations of the standard Gutzwiller-approximation. It is shown that in a one-dimensional dilute Bose-gas with a strong transverse...
متن کاملThe Bose-Hubbard model with disorder in low-dimensional lattices
2 Contents Introduction iii 1 Ultracold atoms on optical lattices and the dirty boson problem 1 1.
متن کاملMott-insulator phase of the one-dimensional Bose-Hubbard model: A high-order perturbative study
The one-dimensional Bose-Hubbard model at a unit filling factor is studied by means of a very high-order symbolic perturbative expansion. Analytical expressions are derived for the ground-state quantities such as energy per site, variance of on-site occupation, and correlation functions: âj âj+r and n̂jn̂j+r . These findings are compared to numerics and good agreement is found in the Mott insulat...
متن کاملClassical chaos with Bose-Einstein condensates in tilted optical lattices.
A widely accepted definition of "quantum chaos" is "the behavior of a quantum system whose classical limit is chaotic." The dynamics of quantum-chaotic systems is nevertheless very different from that of their classical counterparts. A fundamental reason for that is the linearity of Schrödinger equation. In this paper, we study the quantum dynamics of an ultracold quantum degenerate gas in a ti...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review A
سال: 2012
ISSN: 1050-2947,1094-1622
DOI: 10.1103/physreva.85.033625