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Adiabatic renormalization in theories with modified dispersion relations
(IOP Publishing, 2007-12)
We generalize the adiabatic renormalization to theories with dispersion relations modified at energies higher than a new scale MC. We obtain explicit expressions for the mean value of the stress tensor in the adiabatic ...
Effective potential in curved space and cut-off regularizations
(Elsevier B.V., 2013)
Wilson-Fisher fixed points for any dimension
(American Physical Society, 2019-12)
The critical behavior of a nonlocal scalar field theory is studied. This theory has a nonlocal quartic interaction term which involves a power-β of the Laplacian. The power-β is tuned so as to make that interaction marginal ...
Renormalization in non-relativistic quantum mechanics
(Iop Publishing Ltd, 1997-09-21)
The importance and usefulness of renormalization are emphasized in non-relativistic quantum mechanics. The momentum space treatment of both two-body bound state and scattering problems involving some potentials singular ...
Renormalization in non-relativistic quantum mechanics
(Iop Publishing Ltd, 1997-09-21)
The importance and usefulness of renormalization are emphasized in non-relativistic quantum mechanics. The momentum space treatment of both two-body bound state and scattering problems involving some potentials singular ...
Renormalization: The observable-state model. II
(American Physical Society, 2012-07)
The purpose of this work is to rewrite the generating functional of 4 theory for the n=0 and n=4 correlation functions as the inner product of a state with an observable, as we did in a previous work, for the two-points ...
Holographic renormalization flows, entanglement entropy and the sum rule
(Springer, 2016-03-07)
We calculate the two-point function of the trace of the stress tensor in holographic renormalization group flows between pairs of conformal field theories. We show that the term proportional to the momentum squared in this ...
Non-Fermi-liquid superconductivity: Eliashberg approach versus the renormalization group
(American Physical Society, 2017-04)
We address the problem of superconductivity for non-Fermi liquids using two commonly adopted, yet apparently distinct, methods: (1) the renormalization group (RG) and (2) Eliashberg theory. The extent to which both methods ...
Numerical methods for nanoscopic systems based on density matrix renormalization
(American Scientific Publishers, 2008-12)
The Density Matrix Renormalization Group (DMRG) has become a powerful numerical method that can be applied to nanoscopic and low-dimensional strongly correlated fermionic and bosonic systems. It allows for a very precise ...
Aspects of renormalization in finite-density field theory
(American Physical Society, 2015-05-15)
We study the renormalization of the Fermi surface coupled to a massless boson near three spatial dimensions. For this, we set up a Wilsonian RG with independent decimation procedures for bosons and fermions, where the ...