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      Effective Hamiltonian for a tight-binding square lattice and its relation to a two-mesh LC circuit with discrete charge Translated title: Hamiltoniano efectivo de una red cuadrada de enlace fuerte y su relación con un circuito LC de dos mallas con carga discreta

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          Abstract

          Abstract We consider an extended tight-binding Hamiltonian function comprising nearest and next-to-nearest neighbor interactions for a charged particle hopping in a square lattice in the presence of a static arbitrary field and a rapidly oscillating uniform field with frequency ω. The application of the semiclassical method and the Kapitza's method for time-averaging up to O(ω-2) yields an effective (time independent) Hamiltonian function with long range hopping elements that depend on the parameters of the external fields. By controlling these parameters we can engineer the interactions in such a way as to emulate a different physical system, namely, a two-mesh LC circuit with discrete charge

          Translated abstract

          Resumen En este trabajo consideramos una función hamiltoniana de enlace fuerte extendida a primeros y segundos vecinos para una partícula cargada que se transporta por saltos (hopping) en una red cuadrada en presencia de un campo estático arbitrario y un campo uniforme rápidamente oscilante con frecuencia ω. La aplicación del método semiclásico y el método de Kapitza de promediación temporal hasta O(ω-2) conduce a una función hamiltoniana efectiva (independiente del tiempo) con elementos de salto que dependen de los parámetros de los campos externos. Controlando dichos parámetros podemos manipular las interacciones de tal forma de emular un sistema físico diferente, en este caso, un circuito LC de dos mallas con carga discreta

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          Quantum Theory of Solids

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            Solid State Physics

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                Author and article information

                Journal
                rbf
                Revista Boliviana de Física
                Revista Boliviana de Física
                Sociedad Boliviana de Física (La Paz, , Bolivia )
                1562-3823
                November 2021
                : 38
                : 38
                : 15-26
                Article
                S1562-38232021000100004 S1562-3823(21)03803800004
                02a8b80f-ea52-45fc-95f9-b81941ff6622

                This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

                History
                : 02 September 2021
                : 18 November 2021
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 28, Pages: 12
                Product

                SciELO Bolivia

                Categories
                A. ARTICLES

                mesoscopic systems,semiclassical model,Tight-binding method,sistemas mesoscópicos,modelo semiclásico,Método de enlace fuerte

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