Smeared quantum phase transition in the dissipative random quantum Ising model

✍ Scribed by Thomas Vojta; José A. Hoyos

• Publisher: Elsevier Science
• Year: 2010
• Tongue: English
• Weight: 440 KB
• Volume: 42
• Category: Article
• ISSN: 1386-9477
• DOI: 10.1016/j.physe.2009.06.067

✦ Synopsis

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 [