On the basis of the two-site polaron problem, which we solve by exact di-agonalization, we analyse the spectral properties of polaronic systems in view of discerning localized from itinerant polarons and bound polaron pairs from an ensemble of single polarons. The corresponding experimental techniques for that concern photoemission and inverse photoemission spectroscopy. The evolution of the de...

We study a model for polaron-like charge transport mechanism along DNAmolecules with emphasis on the impact of parametrical and structural disorder. Our model Hamiltonian takes into account the coupling of the charge carrier to two different kind of modes representing fluctuating twist motions of the base pairs and H-bond distortions within the double helix structure of λ−DNA. Localized station...

Abstract We show that the effective mass of Fröhlich Polaron is bounded below by $$c \alpha ^{2/5}$$ c ? 2 / 5 for some constant $$c>0$$ > 0 and all couplin...

The best quadratic approximation to the retarded polaron action due to Adamowski et al. and Saitoh is investigated numerically for a wide range of coupling constants. The non-linear variational equations are solved iteratively with an efficient method in order to obtain the ground state energy and the effective mass of the polaron. The virial theorem and expansions for small and large couplings...

Ab initio density functional calculations on explicitly doped La2−xSrxCuO4 find that doping creates localized holes in out-of-plane orbitals. A model for cuprate superconductivity is developed based on the assumption that doping leads to the formation of holes on a four-site Cu plaquette composed of the out-of-plane A1 orbitals apical O pz, planar Cu d3z2−r2, and planar O p . This is in contras...

Recent studies have demonstrated that higher than two-body bath-impurity correlations are not important for quantitatively describing the ground state of Bose polaron. Motivated by above, we employ so-called Gross Ansatz (GA) approach to unravel stationary and dynamical properties homogeneous one-dimensional Bose-polaron different impurity momenta couplings. We explicate character equilibrium c...

Many experiments have been done to determine how far and how freely holes can move along the stack of base pairs in DNA. The results of these experiments are usually described in terms of a parameter beta under the assumption that it describes an exponential decay with distance. The reported values range from beta < 0.2/A to beta > 1. 4/A. For the larger values of beta, the transport can be acc...