Published March 2000
| Version v1
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On the propagation speed of evanescent modes
Creators
- 1. Universidad Federal Fluminense (Brazil)
- 2. State Univ. of Campinas, Campinas (Brazil)
- 3. Bergamo Univ., Bergamo (Italy). Fac. di Ingegneria
- 4. Istituto Nazionale di Fisica Nucleare, Milan (Italy)
Description
The group velocity of evanescent waves (in undersized waveguides, for instance) was theoretically predicted, and has been experimentally verified, to be superluminal. By contrast, it is known that the precursor speed in vacuum cannot be larger than c. This paper, by computer simulations based on Maxwell equations only, shows the existence of both phenomena and verifies the actual possibility of superluminal group velocities, without violating the so-called (naive) Einstein causality
Availability note (English)
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Additional details
Publishing Information
- Imprint Pagination
- 21 p.
- Report number
- INFN-FM--00-03
INIS
- Country of Publication
- Italy
- Country of Input or Organization
- Italy
- INIS RN
- 32006429
- Subject category
- S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
- Descriptors DEI
- COMPUTERIZED SIMULATION; HARTMANN NUMBER; MAXWELL EQUATIONS; PHOTONS; RELATIVITY THEORY; TUNNEL EFFECT; WAVEGUIDES
- Descriptors DEC
- BOSONS; DIFFERENTIAL EQUATIONS; ELEMENTARY PARTICLES; EQUATIONS; FIELD THEORIES; GENERAL RELATIVITY THEORY; MASSLESS PARTICLES; PARTIAL DIFFERENTIAL EQUATIONS; SIMULATION