Rounding by disorder of first-order quantum phase transitions: emergence of quantum critical points
| dc.creator | Goswami, Pallab | |
| dc.creator | Schwab, David | |
| dc.creator | Chakravarty, Sudip | |
| dc.date | 2007-08-21 | |
| dc.date | 2008-01-08 | |
| dc.date.accessioned | 2026-07-07T08:52:43Z | |
| dc.date.available | 2026-07-07T08:52:43Z | |
| dc.description | We give a heuristic argument for disorder rounding of a first order quantum phase transition into a continuous phase transition. From both weak and strong disorder analysis of the the N-color quantum Ashkin-Teller model in one spatial dimension, we find that for $N \geq 3$, the first order transition is rounded to a continuous transition and the physical picture is the same as the random transverse field Ising model for a limited parameter regime. The results are strikingly different from the corresponding classical problem in two dimensions where the fate of the renormalization group flows is a fixed point corresponding to N-decoupled pure Ising models. | |
| dc.description | Title is modified as requested by the PRL editor, minor stylistic changes, typos corrected, and a few new references added. It is published in PRL | |
| dc.identifier | https://arxiv.org/abs/0708.2917 | |
| dc.identifier | http://arxiv.org/abs/0708.2917 | |
| dc.identifier | Phys. Rev. Lett. 100, 015703 (2008) | |
| dc.identifier | doi:10.1103/PhysRevLett.100.015703 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/145375 | |
| dc.subject | Disordered Systems and Neural Networks | |
| dc.subject | Statistical Mechanics | |
| dc.title | Rounding by disorder of first-order quantum phase transitions: emergence of quantum critical points | |
| dc.type | text |