Smeared Quantum Phase Transition in the Dissipative Random Quantum Ising Model

Author

Thomas Vojta, Missouri University of Science and TechnologyFollow
Jose A. Hoyos

Abstract

We investigate the quantum phase transition in the random transverse-field Ising model under the influence of Ohmic dissipation. To this end, we numerically implement a strong-disorder renormalization-group scheme. We find that Ohmic dissipation destroys the quantum critical point and the associated quantum Griffiths phase by smearing. Our results quantitatively confirm a recent theory [J.A. Hoyos, T. Vojta, Phys. Rev. Lett. 100 (2008) 240601] of smeared quantum phase transitions.

Recommended Citation

T. Vojta and J. A. Hoyos, "Smeared Quantum Phase Transition in the Dissipative Random Quantum Ising Model," Physica E: Low-Dimensional Systems and Nanostructures, Elsevier, Jan 2010.

The definitive version is available at https://doi.org/10.1016/j.physe.2009.06.067

Department(s)

Physics

Sponsor(s)

National Science Foundation (U.S.)
Research Corporation
University of Missouri Research Board

Keywords and Phrases

Dissipation; Quantum Phase Transition; Quenched Disorder

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2010 Elsevier, All rights reserved.

Publication Date

01 Jan 2010