Numerical renormalization group study of two-channel three-impurity triangular clusters
نویسندگان
چکیده
منابع مشابه
The numerical renormalization group method for quantum impurity systems
In the beginning of the 1970’s, Wilson developed the concept of a fully non-perturbative renormalization group transformation. Applied to the Kondo problem, this numerical renormalization group method (NRG) gave for the first time the full crossover from the high-temperature phase of a free spin to the low-temperature phase of a completely screened spin. The NRG has been later generalized to a ...
متن کاملNumerical Renormalization Group Calculations for Impurity Quantum Phase Transitions
i ACKNOWLEDGMENTS I would like to express my gratitude to my supervisor Priv.-Doz. Dr. Ralf Bulla, who gave me the opportunity to learn many excellent physics in leading scientific circumstances. It was a great pleasure to study the fascinating subjects of quantum impurity systems and quantum phase transitions by the non-perturbative method of numerical renormalization group. Moreover, I deeply...
متن کاملNumerical renormalization group method for quantum impurity systems
In the early 1970s, Wilson developed the concept of a fully nonperturbative renormalization group transformation. When applied to the Kondo problem, this numerical renormalization group NRG method gave for the first time the full crossover from the high-temperature phase of a free spin to the low-temperature phase of a completely screened spin. The NRG method was later generalized to a variety ...
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We introduce a method to obtain the specific heat of quantum impurity models via a direct calculation of the impurity internal energy requiring only the evaluation of local quantitieswithin a single numerical renormalization group (NRG) calculation for the total system. For the Anderson impurity model we show that the impurity internal energy can be expressed as a sum of purely local static cor...
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Sabine Tornow,1,2 Ralf Bulla,1,3 Frithjof B. Anders,4 and Abraham Nitzan5 1Theoretische Physik III, Elektronische Korrelationen und Magnetismus, Institut für Physik, Universität Augsburg, 86135 Augsburg, Germany 2Institut für Mathematische Physik, TU Braunschweig, 38106 Braunschweig, Germany 3Institut für Theoretische Physik, Universität zu Köln, 50937 Köln, Germany 4Fachbereich Physik, Univers...
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ژورنال
عنوان ژورنال: Physical Review B
سال: 2008
ISSN: 1098-0121,1550-235X
DOI: 10.1103/physrevb.77.245112