Scattering due to geometry: Case of a spinless particle moving on an asymptotically flat embedded surface

Neslihan Oflaz, Ali Mostafazadeh, and Mehrdad Ahmady
Phys. Rev. A 98, 022126 – Published 20 August 2018

Abstract

A nonrelativistic quantum mechanical particle moving freely on a curved surface feels the effect of the nontrivial geometry of the surface through the kinetic part of the Hamiltonian, which is proportional to the Laplace-Beltrami operator, and a geometric potential, which is a linear combination of the mean and Gaussian curvatures of the surface. The coefficients of these terms cannot be uniquely determined by general principles of quantum mechanics but enter the calculation of various physical quantities. We examine their contribution to the geometric scattering of a scalar particle moving on an asymptotically flat embedded surface. In particular, having in mind the possibility of an experimental realization of the geometric scattering in a low-density electron gas formed on a bumped surface, we determine the scattering amplitude for arbitrary choices of the curvature coefficients for a surface with global or local cylindrical symmetry. We also examine the effect of perturbations that violate this symmetry and consider surfaces involving bumps that form a lattice.

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  • Received 9 January 2018
  • Corrected 15 January 2021

DOI:https://doi.org/10.1103/PhysRevA.98.022126

©2018 American Physical Society

Physics Subject Headings (PhySH)

Gravitation, Cosmology & Astrophysics

Corrections

15 January 2021

Correction: The university name in the second affiliation was improperly presented and has been fixed.

Authors & Affiliations

Neslihan Oflaz1, Ali Mostafazadeh1, and Mehrdad Ahmady2

  • 1Departments of Mathematics and Physics, Koç University, 34450 Sarıyer, Istanbul, Turkey
  • 2Department of Physics, Azarbaijan Shahid Madani University, 53714-161 Tabriz, Iran

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Issue

Vol. 98, Iss. 2 — August 2018

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