Creation of a Dirac monopole-antimonopole pair in a spin-1 Bose-Einstein condensate

Research output: Contribution to journalArticleScientificpeer-review

Standard

Creation of a Dirac monopole-antimonopole pair in a spin-1 Bose-Einstein condensate. / Tiurev, Konstantin; Kuopanportti, Pekko; Möttönen, Mikko.

In: Physical Review A, Vol. 99, No. 2, 023621, 19.02.2019, p. 1-7.

Research output: Contribution to journalArticleScientificpeer-review

Harvard

APA

Vancouver

Author

Tiurev, Konstantin ; Kuopanportti, Pekko ; Möttönen, Mikko. / Creation of a Dirac monopole-antimonopole pair in a spin-1 Bose-Einstein condensate. In: Physical Review A. 2019 ; Vol. 99, No. 2. pp. 1-7.

Bibtex - Download

@article{2923dac514f743a2a8eac5b9821ebe4a,
title = "Creation of a Dirac monopole-antimonopole pair in a spin-1 Bose-Einstein condensate",
abstract = "We theoretically demonstrate that a pair of Dirac monopoles with opposite synthetic charges can be created within a single spin-1 Bose-Einstein condensate by steering the spin degrees of freedom by external magnetic fields. Although the net synthetic magnetic charge of this configuration vanishes, both the monopole and the antimonopole are accompanied by vortex filaments carrying opposite angular momenta. Such a Dirac dipole can be realized experimentally by imprinting a spin texture with a nonlinear magnetic field generated by a pair of coils in a modified Helmholtz configuration. We also investigate the case where the initial state for the dipole-creation procedure is pierced by a quantized vortex line with a winding number κ. It is shown that if κ=-1, the resulting monopole and antimonopole lie along the core of a singly quantized vortex whose sign is reversed at the locations of the monopoles. For κ=-2, the monopole and antimonopole are connected by a vortex line segment carrying two quanta of angular momentum, and hence the dipole as a whole is an isolated configuration. In addition, we simulate the long-time evolution of the dipoles in the magnetic field used to create them. For κ=0, each of the semi-infinite doubly quantized vortices splits into two singly quantized vortices, as in the case of a single Dirac monopole. For κ=-1 and κ=-2, the initial vortices deform into a vortex with a kink and a vortex ring, respectively.",
keywords = "HIGHLY IONIZING PARTICLES, MAGNETIC MONOPOLES, SEARCH, COLLISIONS, FIELD",
author = "Konstantin Tiurev and Pekko Kuopanportti and Mikko M{\"o}tt{\"o}nen",
note = "| openaire: EC/H2020/681311/EU//QUESS",
year = "2019",
month = "2",
day = "19",
doi = "10.1103/PhysRevA.99.023621",
language = "English",
volume = "99",
pages = "1--7",
journal = "Physical Review A",
issn = "2469-9926",
publisher = "American Physical Society",
number = "2",

}

RIS - Download

TY - JOUR

T1 - Creation of a Dirac monopole-antimonopole pair in a spin-1 Bose-Einstein condensate

AU - Tiurev, Konstantin

AU - Kuopanportti, Pekko

AU - Möttönen, Mikko

N1 - | openaire: EC/H2020/681311/EU//QUESS

PY - 2019/2/19

Y1 - 2019/2/19

N2 - We theoretically demonstrate that a pair of Dirac monopoles with opposite synthetic charges can be created within a single spin-1 Bose-Einstein condensate by steering the spin degrees of freedom by external magnetic fields. Although the net synthetic magnetic charge of this configuration vanishes, both the monopole and the antimonopole are accompanied by vortex filaments carrying opposite angular momenta. Such a Dirac dipole can be realized experimentally by imprinting a spin texture with a nonlinear magnetic field generated by a pair of coils in a modified Helmholtz configuration. We also investigate the case where the initial state for the dipole-creation procedure is pierced by a quantized vortex line with a winding number κ. It is shown that if κ=-1, the resulting monopole and antimonopole lie along the core of a singly quantized vortex whose sign is reversed at the locations of the monopoles. For κ=-2, the monopole and antimonopole are connected by a vortex line segment carrying two quanta of angular momentum, and hence the dipole as a whole is an isolated configuration. In addition, we simulate the long-time evolution of the dipoles in the magnetic field used to create them. For κ=0, each of the semi-infinite doubly quantized vortices splits into two singly quantized vortices, as in the case of a single Dirac monopole. For κ=-1 and κ=-2, the initial vortices deform into a vortex with a kink and a vortex ring, respectively.

AB - We theoretically demonstrate that a pair of Dirac monopoles with opposite synthetic charges can be created within a single spin-1 Bose-Einstein condensate by steering the spin degrees of freedom by external magnetic fields. Although the net synthetic magnetic charge of this configuration vanishes, both the monopole and the antimonopole are accompanied by vortex filaments carrying opposite angular momenta. Such a Dirac dipole can be realized experimentally by imprinting a spin texture with a nonlinear magnetic field generated by a pair of coils in a modified Helmholtz configuration. We also investigate the case where the initial state for the dipole-creation procedure is pierced by a quantized vortex line with a winding number κ. It is shown that if κ=-1, the resulting monopole and antimonopole lie along the core of a singly quantized vortex whose sign is reversed at the locations of the monopoles. For κ=-2, the monopole and antimonopole are connected by a vortex line segment carrying two quanta of angular momentum, and hence the dipole as a whole is an isolated configuration. In addition, we simulate the long-time evolution of the dipoles in the magnetic field used to create them. For κ=0, each of the semi-infinite doubly quantized vortices splits into two singly quantized vortices, as in the case of a single Dirac monopole. For κ=-1 and κ=-2, the initial vortices deform into a vortex with a kink and a vortex ring, respectively.

KW - HIGHLY IONIZING PARTICLES

KW - MAGNETIC MONOPOLES

KW - SEARCH

KW - COLLISIONS

KW - FIELD

UR - http://www.scopus.com/inward/record.url?scp=85062288807&partnerID=8YFLogxK

U2 - 10.1103/PhysRevA.99.023621

DO - 10.1103/PhysRevA.99.023621

M3 - Article

VL - 99

SP - 1

EP - 7

JO - Physical Review A

JF - Physical Review A

SN - 2469-9926

IS - 2

M1 - 023621

ER -

ID: 32503265