Pinpointing Feshbach resonances and testing Efimov universalities in ^{39}K
Using a combination of bound-state spectroscopy and loss spectroscopy, we pinpoint eight intrastate Feshbach resonances in ^{39}K, as well as six previously unexplored interstate ones. We perform a detailed characterization of four of the intrastate resonances and two of the interstate ones. We carr...
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2023-03-01
|
| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.5.013174 |
| _version_ | 1827285269374566400 |
|---|---|
| author | Jiří Etrych Gevorg Martirosyan Alec Cao Jake A. P. Glidden Lena H. Dogra Jeremy M. Hutson Zoran Hadzibabic Christoph Eigen |
| author_facet | Jiří Etrych Gevorg Martirosyan Alec Cao Jake A. P. Glidden Lena H. Dogra Jeremy M. Hutson Zoran Hadzibabic Christoph Eigen |
| author_sort | Jiří Etrych |
| collection | DOAJ |
| description | Using a combination of bound-state spectroscopy and loss spectroscopy, we pinpoint eight intrastate Feshbach resonances in ^{39}K, as well as six previously unexplored interstate ones. We perform a detailed characterization of four of the intrastate resonances and two of the interstate ones. We carry out coupled-channel scattering calculations and find good agreement with experiment. The combination of experiment and theory provides a faithful map of the scattering length a and permits precision measurements of the signatures of Efimov physics across four intermediate-strength intrastate resonances. We measure the modulation of the a^{4} scaling of the three-body loss coefficient for both a<0 and a>0, as well as the many-body loss dynamics at unitarity (where a diverges). The absolute positions of the observed Efimov features confirm a ubiquitous breakdown of Efimov–van der Waals universality in ^{39}K, while their relative positions are in agreement with the universal Efimov ratios. The loss dynamics at unitarity are the same (within experimental uncertainties) for the three broadest Feshbach resonances, consistent with observing little variation in the widths of the corresponding Efimov features. |
| first_indexed | 2024-04-24T10:12:09Z |
| format | Article |
| id | doaj.art-bf95f55c408f4cfa862e07f966f91e23 |
| institution | Directory Open Access Journal |
| issn | 2643-1564 |
| language | English |
| last_indexed | 2024-04-24T10:12:09Z |
| publishDate | 2023-03-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj.art-bf95f55c408f4cfa862e07f966f91e232024-04-12T17:29:10ZengAmerican Physical SocietyPhysical Review Research2643-15642023-03-015101317410.1103/PhysRevResearch.5.013174Pinpointing Feshbach resonances and testing Efimov universalities in ^{39}KJiří EtrychGevorg MartirosyanAlec CaoJake A. P. GliddenLena H. DograJeremy M. HutsonZoran HadzibabicChristoph EigenUsing a combination of bound-state spectroscopy and loss spectroscopy, we pinpoint eight intrastate Feshbach resonances in ^{39}K, as well as six previously unexplored interstate ones. We perform a detailed characterization of four of the intrastate resonances and two of the interstate ones. We carry out coupled-channel scattering calculations and find good agreement with experiment. The combination of experiment and theory provides a faithful map of the scattering length a and permits precision measurements of the signatures of Efimov physics across four intermediate-strength intrastate resonances. We measure the modulation of the a^{4} scaling of the three-body loss coefficient for both a<0 and a>0, as well as the many-body loss dynamics at unitarity (where a diverges). The absolute positions of the observed Efimov features confirm a ubiquitous breakdown of Efimov–van der Waals universality in ^{39}K, while their relative positions are in agreement with the universal Efimov ratios. The loss dynamics at unitarity are the same (within experimental uncertainties) for the three broadest Feshbach resonances, consistent with observing little variation in the widths of the corresponding Efimov features.http://doi.org/10.1103/PhysRevResearch.5.013174 |
| spellingShingle | Jiří Etrych Gevorg Martirosyan Alec Cao Jake A. P. Glidden Lena H. Dogra Jeremy M. Hutson Zoran Hadzibabic Christoph Eigen Pinpointing Feshbach resonances and testing Efimov universalities in ^{39}K Physical Review Research |
| title | Pinpointing Feshbach resonances and testing Efimov universalities in ^{39}K |
| title_full | Pinpointing Feshbach resonances and testing Efimov universalities in ^{39}K |
| title_fullStr | Pinpointing Feshbach resonances and testing Efimov universalities in ^{39}K |
| title_full_unstemmed | Pinpointing Feshbach resonances and testing Efimov universalities in ^{39}K |
| title_short | Pinpointing Feshbach resonances and testing Efimov universalities in ^{39}K |
| title_sort | pinpointing feshbach resonances and testing efimov universalities in 39 k |
| url | http://doi.org/10.1103/PhysRevResearch.5.013174 |
| work_keys_str_mv | AT jirietrych pinpointingfeshbachresonancesandtestingefimovuniversalitiesin39k AT gevorgmartirosyan pinpointingfeshbachresonancesandtestingefimovuniversalitiesin39k AT aleccao pinpointingfeshbachresonancesandtestingefimovuniversalitiesin39k AT jakeapglidden pinpointingfeshbachresonancesandtestingefimovuniversalitiesin39k AT lenahdogra pinpointingfeshbachresonancesandtestingefimovuniversalitiesin39k AT jeremymhutson pinpointingfeshbachresonancesandtestingefimovuniversalitiesin39k AT zoranhadzibabic pinpointingfeshbachresonancesandtestingefimovuniversalitiesin39k AT christopheigen pinpointingfeshbachresonancesandtestingefimovuniversalitiesin39k |