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of 60
pro vyhledávání: '"Benfatto, Giuseppe"'
In this paper, a fermionic hierarchical model is defined, inspired by the Kondo model, which describes a 1-dimensional lattice gas of spin-1/2 electrons interacting with a spin-1/2 impurity. This model is proved to be exactly solvable, and is shown t
Externí odkaz:
http://arxiv.org/abs/1506.04381
We complete the proof started in "Universality of one-dimensional Fermi systems, I." of the universal Luttinger liquid relations for a general model of spinning fermions on a lattice, by making use of the Ward Identities due to asymptotically emergin
Externí odkaz:
http://arxiv.org/abs/1303.3684
The critical behavior of one-dimensional interacting Fermi systems is expected to display universality features, called Luttinger liquid behavior. Critical exponents and certain thermodynamic quantities are expected to be related among each others by
Externí odkaz:
http://arxiv.org/abs/1303.3681
We study the 1D extended Hubbard model with a weak repulsive short-range interaction in the non-half-filled band case, using non-perturbative Renormalization Group methods and Ward Identities. At the critical temperature, T = 0, the response function
Externí odkaz:
http://arxiv.org/abs/1106.0356
For a quantum spin chain or 1D fermionic system, we prove that the Drude weight D verifies the universal Luttinger liquid relation $v_s^2=D/\kappa$, where $\kappa$ is the susceptibility and $v_s$ is the Fermi velocity. This result is proved by rigoro
Externí odkaz:
http://arxiv.org/abs/1012.0403
Publikováno v:
Commun.Math.Phys. 258 (2005) 609-655
Systems of interacting non relativistic fermions in $d=1$, as well as spin chains or interacting bidimensional Ising models, verify an hidden approximate Gauge invariance which can be used to derive suitable Ward identities. Despite the presence of c
Externí odkaz:
http://arxiv.org/abs/cond-mat/0409049
Publikováno v:
Ann. Henri Poincare 4, 137-193 (2003)
We prove the convergence of the perturbative expansion, based on Renormalization Group, of the two point Schwinger function of a system of weakly interacting fermions in d=2, with symmetric Fermi surface and up to exponentially small temperatures, cl
Externí odkaz:
http://arxiv.org/abs/cond-mat/0207210
Publikováno v:
In European Journal of Internal Medicine 2009 20(2):114-124
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