Apparently superluminal superfluids
We consider the superfluid phase of a specific renormalizable relativistic quantum field theory. We prove that, within the regime of validity of perturbation theory and of the superfluid effective theory, there are consistent and regular vortex solutions where the superfluid’s velocity field as trad...
| Main Authors: | , , , |
|---|---|
| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
Springer Berlin Heidelberg
2024
|
| Online Access: | https://hdl.handle.net/1721.1/153397 |
| _version_ | 1811074865951670272 |
|---|---|
| author | Kourkoulou, Ioanna Landry, Michael J. Nicolis, Alberto Parmentier, Klaas |
| author2 | Massachusetts Institute of Technology. Center for Theoretical Physics |
| author_facet | Massachusetts Institute of Technology. Center for Theoretical Physics Kourkoulou, Ioanna Landry, Michael J. Nicolis, Alberto Parmentier, Klaas |
| author_sort | Kourkoulou, Ioanna |
| collection | MIT |
| description | We consider the superfluid phase of a specific renormalizable relativistic quantum field theory. We prove that, within the regime of validity of perturbation theory and of the superfluid effective theory, there are consistent and regular vortex solutions where the superfluid’s velocity field as traditionally defined smoothly interpolates between zero and arbitrarily large superluminal values. We show that this solution is free of instabilities and of superluminal excitations. We show that, in contrast, a generic vortex solution for an ordinary fluid does develop an instability if the velocity field becomes superluminal. All this questions the characterization of a superfluid velocity field as the actual velocity of “something”. |
| first_indexed | 2024-09-23T09:56:36Z |
| format | Article |
| id | mit-1721.1/153397 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T09:56:36Z |
| publishDate | 2024 |
| publisher | Springer Berlin Heidelberg |
| record_format | dspace |
| spelling | mit-1721.1/1533972024-07-12T16:12:09Z Apparently superluminal superfluids Kourkoulou, Ioanna Landry, Michael J. Nicolis, Alberto Parmentier, Klaas Massachusetts Institute of Technology. Center for Theoretical Physics We consider the superfluid phase of a specific renormalizable relativistic quantum field theory. We prove that, within the regime of validity of perturbation theory and of the superfluid effective theory, there are consistent and regular vortex solutions where the superfluid’s velocity field as traditionally defined smoothly interpolates between zero and arbitrarily large superluminal values. We show that this solution is free of instabilities and of superluminal excitations. We show that, in contrast, a generic vortex solution for an ordinary fluid does develop an instability if the velocity field becomes superluminal. All this questions the characterization of a superfluid velocity field as the actual velocity of “something”. 2024-01-23T19:43:35Z 2024-01-23T19:43:35Z 2024-01-16 2024-01-21T04:22:06Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/153397 Journal of High Energy Physics. 2024 Jan 16;2024(1):80 PUBLISHER_CC en https://doi.org/10.1007/JHEP01(2024)080 Creative Commons Attribution https://creativecommons.org/licenses/by/4.0/ The Author(s) application/pdf Springer Berlin Heidelberg Springer Berlin Heidelberg |
| spellingShingle | Kourkoulou, Ioanna Landry, Michael J. Nicolis, Alberto Parmentier, Klaas Apparently superluminal superfluids |
| title | Apparently superluminal superfluids |
| title_full | Apparently superluminal superfluids |
| title_fullStr | Apparently superluminal superfluids |
| title_full_unstemmed | Apparently superluminal superfluids |
| title_short | Apparently superluminal superfluids |
| title_sort | apparently superluminal superfluids |
| url | https://hdl.handle.net/1721.1/153397 |
| work_keys_str_mv | AT kourkoulouioanna apparentlysuperluminalsuperfluids AT landrymichaelj apparentlysuperluminalsuperfluids AT nicolisalberto apparentlysuperluminalsuperfluids AT parmentierklaas apparentlysuperluminalsuperfluids |