Path integral Monte Carlo study of the interacting quantum double-well model: Quantum phase transition and phase diagram

Cited 9 time in webofscience Cited 0 time in scopus
  • Hit : 369
  • Download : 0
The discrete time path integral Monte Carlo with a one-particle density matrix approximation is applied to study the quantum phase transition in the coupled double-well chain. To improve the convergence properties, the exact action for a single particle in a double-well potential is used to construct the many-particle action. The algorithm is applied to the interacting quantum double-well chain for which the zero-temperature phase diagram is determined. The quantum phase transition is studied via finite-size scaling, and the critical exponents are shown to be compatible with the classical two-dimensional Ising universality class-not only in the order-disorder limit (deep potential wells), but also in the displacive regime (shallow potential wells).
Publisher
AMERICAN PHYSICAL SOC
Issue Date
2007
Language
English
Article Type
Article
Keywords

SYSTEMS; DYNAMICS; GLASSES; HELIUM

Citation

PHYSICAL REVIEW E, v.75, no.1

ISSN
1539-3755
DOI
10.1103/PhysRevE.75.016702
URI
http://hdl.handle.net/10203/86773
Appears in Collection
RIMS Journal Papers
Files in This Item
There are no files associated with this item.
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡ Click to see webofscience_button
⊙ Cited 9 items in WoS Click to see citing articles in records_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0