Diagrammatic quantum Monte Carlo study of the Fröhlich polaron Export

@article{citeulike:789098, abstract = {A detailed study of the Fr\~{A}{\P}hlich polaron model is performed on the basis of diagrammatic quantum Monte Carlo method [N. V. Prokof\^{a}€™ev and B. V. Svistunov; Phys. Rev. Lett. 81; 2514 (1998)]. The method is further developed both quantitatively (performance) and qualitatively (new estimators); and is enhanced by spectral analysis of the polaron Green\^{a}€™s function; within an approach developed in the present paper. We present up to date results for the binding energy; and make available precise data for the effective mass; including the region of intermediate and strong couplings. We look at the structure of the polaron cloud and answer such questions as the average number of phonons in the cloud and their number/momentum distribution. The spectral analysis reveals nontrivial structure of the spectral density at intermediate and large coupling: the spectral continuum features pronounced peaks that we attribute to unstable excited states of the polaron.}, author = {Mishchenko, A. S. and Prokof\^{a}€™ev, N. V. and Sakamoto, A. and Svistunov, B. V.}, citeulike-article-id = {789098}, citeulike-linkout-0 = {http://dx.doi.org/10.1103/PhysRevB.62.6317}, citeulike-linkout-1 = {http://link.aps.org/abstract/PRB/v62/i10/p6317_1}, citeulike-linkout-2 = {http://link.aps.org/pdf/PRB/v62/i10/p6317_1}, day = {1}, doi = {10.1103/PhysRevB.62.6317}, journal = {Physical Review B}, keywords = {carlo, diagrammatic, monte}, number = {10}, pages = {6317+}, posted-at = {2006-08-07 21:46:24}, priority = {2}, publisher = {American Physical Society}, title = {Diagrammatic quantum Monte Carlo study of the Fr\öhlich polaron}, url = {http://dx.doi.org/10.1103/PhysRevB.62.6317}, volume = {62}, year = {2000} }

TY - JOUR ID - citeulike:789098 L3 - citeulike-article-id:789098 N2 - A detailed study of the Fröhlich polaron model is performed on the basis of diagrammatic quantum Monte Carlo method [N. V. Prokof’ev and B. V. Svistunov; Phys. Rev. Lett. 81; 2514 (1998)]. The method is further developed both quantitatively (performance) and qualitatively (new estimators); and is enhanced by spectral analysis of the polaron Green’s function; within an approach developed in the present paper. We present up to date results for the binding energy; and make available precise data for the effective mass; including the region of intermediate and strong couplings. We look at the structure of the polaron cloud and answer such questions as the average number of phonons in the cloud and their number/momentum distribution. The spectral analysis reveals nontrivial structure of the spectral density at intermediate and large coupling: the spectral continuum features pronounced peaks that we attribute to unstable excited states of the polaron. IS - 10 JF - Physical Review B TI - Diagrammatic quantum Monte Carlo study of the Fröhlich polaron PB - American Physical Society VL - 62 SP - 6317 KW - carlo KW - diagrammatic KW - monte AU - Mishchenko, AS AU - Prokof’ev, NV AU - Sakamoto, A AU - Svistunov, BV PY - 2000//01/ UR - http://dx.doi.org/10.1103/PhysRevB.62.6317 ER -