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Renormalization group crossover in the critical dynamics of field theories with mode coupling terms
(American Physical Society, 2019-12-23)
Motivated by the collective behavior of biological swarms, we study the critical dynamics of field theories with coupling between order parameter and conjugate momentum in the presence of dissipation. Under a fixed-network ...
Zero-site density matrix renormalization group and the optimal low-rank correction
(American Physical Society, 2020-02)
A zero-site density matrix renormalization algorithm (DMRG0) is proposed to minimize the energy of matrix product states (MPS). Instead of the site tensors themselves, we propose to optimize sequentially the “message” ...
New trends in density matrix renormalization
(Taylor & Francis Ltd, 2006-07)
The density matrix renormalization group (DMRG) has become a powerful numerical method that can be applied to low-dimensional strongly correlated fermionic and bosonic systems. It allows for a very precise calculation of ...
Dynamical Renormalization Group Approach to the Collective Behavior of Swarms
(American Physical Society, 2019-12-23)
We study the critical behavior of a model with nondissipative couplings aimed at describing the collective behavior of natural swarms, using the dynamical renormalization group under a fixed-network approximation. At one ...
Leading temperature dependence of the conductance in Kondo-correlated quantum dots
(IOP Publishing, 2018-03)
Using renormalized perturbation theory in the Coulomb repulsion, we derive an analytical expression for the leading term in the temperature dependence of the conductance through a quantum dot described by the impurity ...
Solving the multi-site and multi-orbital Dynamical Mean Field Theory using Density Matrix Renormalization
(Frontiers Research Foundation, 2018-02)
We implement an efficient numerical method to calculate response functions of complex impurities based on the Density Matrix Renormalization Group (DMRG) and use it as the impurity-solver of the Dynamical Mean Field Theory ...
A renormalization group approach to estimation of anomalous diffusion in the unstable equatorial F region
(American Geophysical Union, 1998-11-01)
An expression is derived for the anomalous diffusion coefficient associated with collisional interchange turbulence in the equatorial F region ionosphere. Waves with ω ≪ Vin ≪ Ωi are considered. The calculation makes use ...
Inhomogeneous superconducting phases in the frustrated Kondo-Heisenberg chain
(American Physical Society, 2013-06)
We use bosonization and renormalization group methods to determine the ground-state phase diagram of a one-dimensional frustrated Kondo-Heisenberg system consisting of a one-dimensional spin- 1/2 Luttinger liquid coupled ...
Exact Green's function renormalization approach to spectral properties of open quantum systems driven by harmonically time-dependent fields
(American Physical Society, 2006-12)
We present an efficient method and a fast algorithm to exactly calculate spectral functions and one-body observables of open quantum systems described by lattice Hamiltonians with harmonically time-dependent terms and ...