搜索结果: 1-8 共查到“物理学 Polarons”相关记录8条 . 查询时间(0.031 秒)
Self-trapping of polarons in the Rashba-Pekar model
Quantum monte carlo exciton polaron model coupling particle momentum and the lattice
2014/12/22
We performed a quantum Monte Carlo study of the exciton-polaron model which features the self-trapping phenomenon when the coupling strength and/or particle momentum is varied. Accurate data for energ...
Sharp Transition for Single Polarons in the One-Dimensional Su-Schrieffer-Heeger Model
Model of polaron ground-state energy smooth transition coupling electron phonon coupling phonon coupling dynamics
2014/12/18
We study a single polaron in the Su-Schrieffer-Heeger (SSH) model using four different techniques (three numerical and one analytical). Polarons show a smooth crossover from weak to strong coupling, a...
Abstract: If the polaron coupling constant $\alpha$ is large enough, bipolarons or multi-polarons will form. When passing through the critical $\alpha_c$ from above, does the radius of the system simp...
Abstract. If the polaron coupling constant is large enough, bipolarons or multi-polarons will form. When passing through the critical c from above,does the radius of the system simply get arbitrari...
Abstract. If the polaron coupling constant is large enough, bipolarons or multi-polarons will form. When passing through the critical c from above,does the radius of the system simply get arbitrari...
Polarons and Molecules in a Two-Dimensional Fermi Gas
Polarons Molecules Two-Dimensional Fermi Gas
2010/11/23
We study an impurity atom in a two-dimensional Fermi gas using variational wave functions for (i)an impurity dressed by particle-hole excitations (polaron) and (ii) a dimer consisting of the impurity ...
Holstein magneto-polarons: from Landau levels to Hofstadter butterflies
Holstein magneto-polarons Landau levels Hofstadter butterflies
2010/11/19
We study the Holstein polaron in transverse magnetic field using non-perturbational methods. At
strong fields and large coupling, we show that the polaron has a Hofstadter spectrum, however very dist...
Q1D-Polarons in Rigid Boundary Cylindrical Wires: “Mixed-Coupling Approximation”
Cylindrical Wires Q1D-Polarons electron-phonon coupling strengths
2010/4/19
We consider the interaction of a confined electron with bulk polar-optical phonons in a cylindrical quantum well wire with infinite boundary potential. Expressions for the polaron self energy and mass...