TITLE: Bosonization and the Kondo Problem: from universality to transport
Speaker: Carlos Bolech - Department of Physics, University of Cincinnati, Click here to show mail address
INVITED BY: Ramón Aguado
WHEN: July, 10 - 12PM
WHERE: Salón de Actos, ICMM
Abstract:
The Kondo effect has a long and rich history spanning almost a century. In the context of mesoscopic physics, Kondo-type Hamiltonians provide minimal models to understand transport in cases in which correlations play an important role and a single-particle picture is insufficient. A standard example is the case of small quantum dots for which the Coulomb charging effect cannot be neglected. Following on a previous discussion of the use and misuse of bosonization techniques for transport calculations, we will examine both the Toulouse limit and the compactification of the (multi)-two-channel Kondo model. A combination of exact results and an extended RG analysis will be employed to argue in favor of a new consistent Bosonization-deBosonization (BdB) procedure and to bring it into further perspective.
Short Bio:
Carlos Bolech is a Professor of Physics at the University of Cincinnati. He studied at the Instituto Balseiro (Bariloche, Argentina) and Rutgers University (New Jersey, USA). He spent postdoctoral time at the University of Geneva (Switzerland) and briefly at Harvard University (Massachusetts, USA). He held a faculty appointment at Rice University (Houston, Texas, USA) before moving to his present position in Cincinnati. His research focus is on strongly correlated quantum systems, arching from condensed-matter materials to artificial systems and cold atoms. Currently he is visiting the ICMM as a Fullbright-CSIC Scholar.
