2000
DOI: 10.1088/0305-4470/33/34/311
|View full text |Cite
|
Sign up to set email alerts
|

Exact relativistic time evolution for a step potential barrier

Abstract: Abstract. We derive an exact analytic solution to a Klein-Gordon equation for a step potential barrier with cutoff plane wave initial conditions, in order to explore wave evolution in a classical forbidden region. We find that the relativistic solution rapidly evanesces within a depth 2xp inside the potential, where xp is the penetration length of the stationary solution. Beyond the characteristic distance 2xp, a Sommerfeld-type precursor travels along the potential at the speed of light, c. However, no spatia… Show more

Help me understand this report
View preprint versions

Search citation statements

Order By: Relevance

Paper Sections

Select...
1
1
1

Citation Types

0
10
0
1

Year Published

2003
2003
2020
2020

Publication Types

Select...
6
2
1

Relationship

1
8

Authors

Journals

citations
Cited by 13 publications
(11 citation statements)
references
References 24 publications
0
10
0
1
Order By: Relevance
“…In the physical literature (see e.g. [22,23,24,25]) the Dirichlet boundary conditions at x = ±L, are sometimes modeled by introducing an appropriate confining potential V L supported in the complement set of (−L, L) × R. Among them the "square well model" corresponding to a potential barrier of the form…”
Section: 4mentioning
confidence: 99%
“…In the physical literature (see e.g. [22,23,24,25]) the Dirichlet boundary conditions at x = ±L, are sometimes modeled by introducing an appropriate confining potential V L supported in the complement set of (−L, L) × R. Among them the "square well model" corresponding to a potential barrier of the form…”
Section: 4mentioning
confidence: 99%
“…The problem of relativistic tunneling time for a particle of spin i has been studied by Krekorta et al [10]. Deutch and Low [11] did also investigate the relativistic problem for a spinless particle and found that a Gaussian wave packet subject to plausible conditions can tunnel through the barrier and appear on the other side with a velocity greater than the speed of light (see also [12]). This phenomena apparently violates the principle of causality, but this point will be studied below.…”
Section: Tunneling Time In Special Relativitymentioning
confidence: 99%
“…Neste problema surge o célebre paradoxo de Klein [6] para potenciais suficientemente intensos, um fenômeno em que o coeficiente de reflexão excede a unidade eé interpretado como sendo devidoà criação de pares na interface do potencial. A análise do problema consoante a EKG não foi esquecida, [5,[7][8][9][10][11].…”
Section: Introductionunclassified