Spin-dependent observable effect for free particles using the arrival time distribution

Md Manirul Ali, A. S. Majumdar, Dipankar Home, Shyamal Sengupta

Research output: Contribution to journalArticlepeer-review

Abstract

The mean arrival time of free particles is computed using the quantum-mechanical probability current. This is uniquely determined in the nonrelativistic limit of Dirac equation, although the Schrödinger probability current has an inherent nonuniqueness. Since the Dirac probability current contains a spin-dependent term, an arrival time distribution based on the probability current shows an observable spin-dependent effect, even for free particles. This arises essentially from relativistic quantum dynamics, but persists even in the nonrelativistic regime.

Original languageEnglish
Pages (from-to)5
Number of pages1
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume68
Issue number4
DOIs
Publication statusPublished - 2003

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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