Abstract
We observe signatures of disorder-induced order in one-dimensional XY spin chains with an external site-dependent uniaxial random field within the XY plane. We numerically investigate signatures of a quantum phase transition at T=0, in particular, an upsurge of the magnetization in the direction orthogonal to the external magnetic field and the scaling of the block entropy with the amplitude of this field. Also, we discuss possible realizations of this effect in ultracold atomic experiments.
| Original language | English (US) |
|---|---|
| Article number | 013630 |
| Journal | Physical Review A |
| Volume | 82 |
| Issue number | 1 |
| DOIs | |
| State | Published - Jul 23 2010 |
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ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
Cite this
Disorder-induced order in quantum XY chains. / Niederberger, A.; Rams, M. M.; Dziarmaga, J.; Cucchietti, F. M.; Wehr, Jan; Lewenstein, M.
In: Physical Review A, Vol. 82, No. 1, 013630, 23.07.2010.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Disorder-induced order in quantum XY chains
AU - Niederberger, A.
AU - Rams, M. M.
AU - Dziarmaga, J.
AU - Cucchietti, F. M.
AU - Wehr, Jan
AU - Lewenstein, M.
PY - 2010/7/23
Y1 - 2010/7/23
N2 - We observe signatures of disorder-induced order in one-dimensional XY spin chains with an external site-dependent uniaxial random field within the XY plane. We numerically investigate signatures of a quantum phase transition at T=0, in particular, an upsurge of the magnetization in the direction orthogonal to the external magnetic field and the scaling of the block entropy with the amplitude of this field. Also, we discuss possible realizations of this effect in ultracold atomic experiments.
AB - We observe signatures of disorder-induced order in one-dimensional XY spin chains with an external site-dependent uniaxial random field within the XY plane. We numerically investigate signatures of a quantum phase transition at T=0, in particular, an upsurge of the magnetization in the direction orthogonal to the external magnetic field and the scaling of the block entropy with the amplitude of this field. Also, we discuss possible realizations of this effect in ultracold atomic experiments.
UR - http://www.scopus.com/inward/record.url?scp=77954893917&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77954893917&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.82.013630
DO - 10.1103/PhysRevA.82.013630
M3 - Article
AN - SCOPUS:77954893917
VL - 82
JO - Physical Review A
JF - Physical Review A
SN - 2469-9926
IS - 1
M1 - 013630
ER -