Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2006-08-17
Phys. Rev. E 75, 016702 (2007)
Physics
Condensed Matter
Statistical Mechanics
17 pages, 7 figures; Accepted for publication in Phys. Rev. E
Scientific paper
The discrete time path integral Monte Carlo (PIMC) 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 (2D) Ising universality class -- not only in the order-disorder limit (deep potential wells) but also in the displacive regime (shallow potential wells).
Kim Dong-Hee
Lin Yu-Cheng
Rieger Heiko
No associations
LandOfFree
Path integral Monte Carlo study of the interacting quantum double-well model: Quantum phase transition and phase diagram does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Path integral Monte Carlo study of the interacting quantum double-well model: Quantum phase transition and phase diagram, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Path integral Monte Carlo study of the interacting quantum double-well model: Quantum phase transition and phase diagram will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-388564