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Metallic quantum critical points with finite BCS couplings
(American Physical Society, 2015-11-02)
We study the fate of superconductivity in the vicinity of a class of metallic quantum critical points obtained by coupling a Fermi surface to a critical boson. In such systems there is a competition between the enhanced ...
Enhanced pairing of quantum critical metals near d=3+1
(American Physical Society, 2015-07)
We study the dynamics of a quantum critical boson coupled to a Fermi surface in intermediate energy regimes where the Landau damping of the boson can be parametrically controlled, either via large Fermi velocity or by ...
Extensión del método de histograma ancho a teorías gauge en el Lattice
(2012)
La formulación de teorías gauge en el lattice es la herramienta no perturbativa mas exitosa disponible en teoría de campos. Sus cálculos se realizan principalmente utilizando el método Monte Carlo con muestreo de Metrópolis. ...
CTFS-ForestGEO: a worldwide network monitoring forests in an era of global change
(John Wiley & Sons LtdWest Sussex, 2014-09-25)
Global change is impacting forests worldwide, threatening biodiversity and ecosystem services including climate regulation. Understanding how forests respond is critical to forest conservation and climate protection. This ...
Quantum dynamics and phase transitions in low-dimensional systems
(Universidad de los AndesFísicaFacultad de CienciasDepartamento de Física, 2023-06-06)
Low-dimensional systems have attracted a main interest in current condensed matter physics due to novel quantum phenomena arising from their characteristic confinement. In this work we will review the quantum dynamics of ...
Intrinsic convergence properties of entropic sampling algorithms
(Iop Publishing, 2014-06-02)
We study the convergence of the density of states and thermodynamic properties in three flat-histogram simulation methods, the Wang–Landau (WL) algorithm, the 1/t algorithm, and tomographic sampling (TS). In the first case ...
Phase transitions, order by disorder, and finite entropy in the Ising antiferromagnetic bilayer honeycomb lattice
(American Physical Society, 2018-07-30)
We present an analytical and numerical study of the Ising model on a bilayer honeycomb lattice including interlayer frustration and coupling with an external magnetic field. First, we discuss the exact T=0 phase diagram, ...
Numerical simulations study of a spin-1 Blume-Emery-Griffiths model on a square lattice
(IOP Publishing, 2019-03-18)
We use the Monte Carlo simulation technique to study the critical behavior of a three-state spin model, with bilinear and biquadratic nearest-neighbor interactions, known as the Blume-Emery-Griffiths model (BEG), in a ...