Impurity quantum phase transitions
نویسندگان
چکیده
منابع مشابه
Scaling of Tripartite Entanglement at Impurity Quantum Phase Transitions.
The emergence of a diverging length scale in many-body systems at a quantum phase transition implies that total entanglement has to reach its maximum there. In order to fully characterize this, one has to consider multipartite entanglement as, for instance, bipartite entanglement between individual particles fails to signal this effect. However, quantification of multipartite entanglement is ve...
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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...
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whereM is a real, symmetric, positive-definite matrix (i.e. all eigenvalues are positive). This identity can be easily established by changing variables of integration to a basis in which M is diagonal. We will use this identity to compute the free energy density F , defined by Z = exp(−V F ) where V is the volume of spacetime. In the paramagnetic phase, r > 0, the perturbative expansion for F ...
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ژورنال
عنوان ژورنال: Philosophical Magazine
سال: 2006
ISSN: 1478-6435,1478-6443
DOI: 10.1080/14786430500070396