Quantum dynamics of an Ising spin-chain in a random transverse field
| dc.creator | Jia, Xun | |
| dc.creator | Chakravarty, Sudip | |
| dc.date | 2006-07-27 | |
| dc.date | 2006-09-14 | |
| dc.date.accessioned | 2026-07-07T07:16:11Z | |
| dc.date.available | 2026-07-07T07:16:11Z | |
| dc.description | We consider an Ising spin-chain in a random transverse magnetic field and compute the zero temperature wave vector and frequency dependent dynamic structure factor numerically by using Jordan-Wigner transformation. Two types of distributions of magnetic fields are introduced. For a rectangular distribution, a dispersing branch is observed, and disorder tends to broaden the dispersion peak and close the excitation gap. For a binary distribution, a non-dispersing branch at almost zero energy is recovered. We discuss the relationship of our work to the neutron scattering measurement in $\mathrm{LiHoF_4}$. | |
| dc.description | 4 pages and 6 eps figures; minor clarifications were made; the text was shortened to add an additional figure | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0607703 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0607703 | |
| dc.identifier | Phys. Rev. B 74, 172414 (2006). | |
| dc.identifier | doi:10.1103/PhysRevB.74.172414 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/113499 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.subject | Disordered Systems and Neural Networks | |
| dc.title | Quantum dynamics of an Ising spin-chain in a random transverse field | |
| dc.type | text |