Abstract
We use numerical linked-cluster expansions to study finite-temperature properties of strongly interacting fermions in two-dimensional optical lattices, governed by the Hubbard model.We show the double occupancy and entropy for the infinite homogeneous system at temperatures significantly lower than those obtained by other exact methods at strong interactions. Employing a local density approximation, and using the high-precision results for the entropy, we study the density and nearest-neighbor spin correlation profiles of lattice fermions trapped in a harmonic potential during adiabatic processes. Starting with a trap that has a substantial band-insulator region at high temperatures, we show how one can access the Mott region at low temperatures by flattening the trapping potential.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 2145-2147 |
| Number of pages | 3 |
| Journal | Journal of Superconductivity and Novel Magnetism |
| Volume | 25 |
| Issue number | 7 |
| DOIs | |
| State | Published - Oct 1 2012 |
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All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
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Accessing the mott regime in 2D optical lattices with strongly interacting fermions. / Khatami, Ehsan; Rigol, Marcos.
In: Journal of Superconductivity and Novel Magnetism, Vol. 25, No. 7, 01.10.2012, p. 2145-2147.Research output: Contribution to journal › Article
TY - JOUR
T1 - Accessing the mott regime in 2D optical lattices with strongly interacting fermions
AU - Khatami, Ehsan
AU - Rigol, Marcos
PY - 2012/10/1
Y1 - 2012/10/1
N2 - We use numerical linked-cluster expansions to study finite-temperature properties of strongly interacting fermions in two-dimensional optical lattices, governed by the Hubbard model.We show the double occupancy and entropy for the infinite homogeneous system at temperatures significantly lower than those obtained by other exact methods at strong interactions. Employing a local density approximation, and using the high-precision results for the entropy, we study the density and nearest-neighbor spin correlation profiles of lattice fermions trapped in a harmonic potential during adiabatic processes. Starting with a trap that has a substantial band-insulator region at high temperatures, we show how one can access the Mott region at low temperatures by flattening the trapping potential.
AB - We use numerical linked-cluster expansions to study finite-temperature properties of strongly interacting fermions in two-dimensional optical lattices, governed by the Hubbard model.We show the double occupancy and entropy for the infinite homogeneous system at temperatures significantly lower than those obtained by other exact methods at strong interactions. Employing a local density approximation, and using the high-precision results for the entropy, we study the density and nearest-neighbor spin correlation profiles of lattice fermions trapped in a harmonic potential during adiabatic processes. Starting with a trap that has a substantial band-insulator region at high temperatures, we show how one can access the Mott region at low temperatures by flattening the trapping potential.
UR - http://www.scopus.com/inward/record.url?scp=84870242829&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84870242829&partnerID=8YFLogxK
U2 - 10.1007/s10948-012-1641-y
DO - 10.1007/s10948-012-1641-y
M3 - Article
AN - SCOPUS:84870242829
VL - 25
SP - 2145
EP - 2147
JO - Journal of Superconductivity and Novel Magnetism
JF - Journal of Superconductivity and Novel Magnetism
SN - 1557-1939
IS - 7
ER -