Defect QED: dielectric without a dielectric, monopole without a monopole
Abstract We study a class of defect quantum field theories where the quantum field theory in the 3+1-dimensional bulk is a free photon and charged matter and the interactions of the photons with the charges occur entirely on a 2+1-dimensional defect. We observe that at the fully quantum level, the e...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2019-11-01
|
| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1007/JHEP11(2019)114 |
| _version_ | 1818437068248842240 |
|---|---|
| author | Gianluca Grignani Gordon W. Semenoff |
| author_facet | Gianluca Grignani Gordon W. Semenoff |
| author_sort | Gianluca Grignani |
| collection | DOAJ |
| description | Abstract We study a class of defect quantum field theories where the quantum field theory in the 3+1-dimensional bulk is a free photon and charged matter and the interactions of the photons with the charges occur entirely on a 2+1-dimensional defect. We observe that at the fully quantum level, the effective action of such a theory is still a defect field theory with free photons propagating in the bulk and the nonlinearities in the quantum corrections to the Maxwell equations confined to the defect. We use this observation to show that the defect field theory has interesting electromagnetic properties. The electromagnetic fields sourced by static test charges are attenuated as if the bulk surrounding them were filled with a dielectric material. This is particularly interesting when the observer and test charge are on opposite sides of the defect. Then the effect is isotropic and it is operative even in the region near the defect. If the defect is in a time reversal violating state, image charges have the appearance of electrically and magnetically charged dyons. We present the example of a single layer in a quantum Hall state. We observe that the charge screening effect in charge neutral graphene should be significant, and even more dramatic when the layer is in a metallic state with mobile electrons. |
| first_indexed | 2024-12-14T17:18:47Z |
| format | Article |
| id | doaj.art-22af754e015140b39c6a4af8e1b48466 |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-12-14T17:18:47Z |
| publishDate | 2019-11-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-22af754e015140b39c6a4af8e1b484662022-12-21T22:53:22ZengSpringerOpenJournal of High Energy Physics1029-84792019-11-0120191112410.1007/JHEP11(2019)114Defect QED: dielectric without a dielectric, monopole without a monopoleGianluca Grignani0Gordon W. Semenoff1Dipartimento di Fisica e Geologia, Università di Perugia, I.N.F.N. Sezione di PerugiaDepartment of Physics and Astronomy, University of British ColumbiaAbstract We study a class of defect quantum field theories where the quantum field theory in the 3+1-dimensional bulk is a free photon and charged matter and the interactions of the photons with the charges occur entirely on a 2+1-dimensional defect. We observe that at the fully quantum level, the effective action of such a theory is still a defect field theory with free photons propagating in the bulk and the nonlinearities in the quantum corrections to the Maxwell equations confined to the defect. We use this observation to show that the defect field theory has interesting electromagnetic properties. The electromagnetic fields sourced by static test charges are attenuated as if the bulk surrounding them were filled with a dielectric material. This is particularly interesting when the observer and test charge are on opposite sides of the defect. Then the effect is isotropic and it is operative even in the region near the defect. If the defect is in a time reversal violating state, image charges have the appearance of electrically and magnetically charged dyons. We present the example of a single layer in a quantum Hall state. We observe that the charge screening effect in charge neutral graphene should be significant, and even more dramatic when the layer is in a metallic state with mobile electrons.http://link.springer.com/article/10.1007/JHEP11(2019)114Conformal Field TheoryField Theories in Lower Dimensions |
| spellingShingle | Gianluca Grignani Gordon W. Semenoff Defect QED: dielectric without a dielectric, monopole without a monopole Journal of High Energy Physics Conformal Field Theory Field Theories in Lower Dimensions |
| title | Defect QED: dielectric without a dielectric, monopole without a monopole |
| title_full | Defect QED: dielectric without a dielectric, monopole without a monopole |
| title_fullStr | Defect QED: dielectric without a dielectric, monopole without a monopole |
| title_full_unstemmed | Defect QED: dielectric without a dielectric, monopole without a monopole |
| title_short | Defect QED: dielectric without a dielectric, monopole without a monopole |
| title_sort | defect qed dielectric without a dielectric monopole without a monopole |
| topic | Conformal Field Theory Field Theories in Lower Dimensions |
| url | http://link.springer.com/article/10.1007/JHEP11(2019)114 |
| work_keys_str_mv | AT gianlucagrignani defectqeddielectricwithoutadielectricmonopolewithoutamonopole AT gordonwsemenoff defectqeddielectricwithoutadielectricmonopolewithoutamonopole |