Tunneling times in a taut string

Villegas, Diosdado ; Horta Rangel, Francisco A. ; González, Tamé ; Quirós, Israel ; Pérez Álvarez, Rolando ; León Pérez, Fernando de

Resumen: The mathematical analogy of classical and matter waves can help to teach the elusive subject of tunneling times in undergraduate physics courses. The tunneling of mechanical energy through a taut string is revisited in this paper in order to study tunneling times for this classical system. General properties of the group delay, the dwell time and the interference time are described. Moreover, we explain how to build string arrays with piecewise constitutive parameters that behave like quantum mechanical heterostructures with alternating well and barrier layers. The paradoxical Hartman effect is also analyzed.

Idioma: Inglés

DOI: 10.1088/1361-6404/ab8362

Año: 2020

Publicado en: EUROPEAN JOURNAL OF PHYSICS 41, 4 (2020), 045001 1-20
ISSN: 0143-0807

Factor impacto JCR: 0.781 (2020)

Categ. JCR: PHYSICS, MULTIDISCIPLINARY rank: 73 / 85 = 0.859 (2020) - Q4 - T3
Categ. JCR: EDUCATION, SCIENTIFIC DISCIPLINES rank: 40 / 44 = 0.909 (2020) - Q4 - T3

Factor impacto SCIMAGO: 0.42 - Physics and Astronomy (miscellaneous) (Q2)

Tipo y forma: Artículo (PostPrint)