Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2006-10-12
Physics
Condensed Matter
Strongly Correlated Electrons
A talk given at the conference "Mott's Physics in Nanowires and Quantum Dots", Cambridge, UK, 2006; corrected typos
Scientific paper
10.1088/0953-8984/19/25/255215
We discuss a recent bosonization method developed to study clean Fermi gases with a repulsion in any dimensions. The method enables one to consider both density and spin excitations. It is demonstrated that due to a non-abelian structure of the effective theory, the spin excitations interact with each other, which leads to new logarithmic in temperature corrections to physical quantities. Using a renormalization group scheme constructed for the effective low energy field theory these logarithms are summed up in all orders. Temperature dependent corrections to the specific heat and spin susceptibility are obtained for all dimensions d=1,2,3.
Aleiner Igor L.
Efetov Konstantin B.
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