| Full text | |
| Author(s): |
Vojta, Thomas
;
Hoyos, Jose A.
;
Mohan, Priyanka
;
Narayanan, Rajesh
Total Authors: 4
|
| Document type: | Journal article |
| Source: | JOURNAL OF PHYSICS-CONDENSED MATTER; v. 23, n. 9, p. 7-pg., 2011-03-09. |
| Abstract | |
We investigate the combined influence of quenched randomness and dissipation on a quantum critical point with O(N) order-parameter symmetry. Utilizing a strong-disorder renormalization group, we determine the critical behavior in one space dimension exactly. For super-ohmic dissipation, we find a Kosterlitz-Thouless type transition with conventional (power-law) dynamical scaling. The dynamical critical exponent depends on the spectral density of the dissipative baths. We also discuss the Griffiths singularities, and we determine observables. (AU) | |
| FAPESP's process: | 10/03749-4 - Quantum phase transitions: effects of disorder and dissipation |
| Grantee: | José Abel Hoyos Neto |
| Support Opportunities: | Regular Research Grants |