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Article
Smeared Quantum Phase Transition in the Dissipative Random Quantum Ising Model
Physica E: Low-Dimensional Systems and Nanostructures
  • Thomas Vojta, Missouri University of Science and Technology
  • 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.

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
1-1-2010
Publication Date
01 Jan 2010
Disciplines
Citation Information
Thomas Vojta and Jose A. Hoyos. "Smeared Quantum Phase Transition in the Dissipative Random Quantum Ising Model" Physica E: Low-Dimensional Systems and Nanostructures (2010)
Available at: http://works.bepress.com/thomas-vojta/26/