Journal
NEW JOURNAL OF PHYSICS
Volume 20, Issue -, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1367-2630/aab29e
Keywords
solitons; gauge theory; Bose-Einstein condensates
Categories
Funding
- EPSRC CM-CDT [EP/L015110/1]
- EPSRC [EP/M005127/1, EP/M024636/1]
- Japan Society for the Promotion of Science
- NSF [2015616]
- Binational (US-Israel) Science Foundation [2015616]
- Israel Science Foundation [1286/17]
- Grants-in-Aid for Scientific Research [16F16802] Funding Source: KAKEN
- Engineering and Physical Sciences Research Council [1512883, EP/M024636/1, EP/M005127/1] Funding Source: researchfish
- EPSRC [EP/M005127/1, EP/M024636/1] Funding Source: UKRI
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We study interactions between bright matter-wave solitons which acquire chiral transport dynamics due to an optically-induced density-dependent gauge potential. Through numerical simulations, we find that the collision dynamics feature several non-integrable phenomena, from inelastic collisions including population transfer and radiation losses to short-lived bound states and soliton fission. An effective quasi-particle model for the interaction between the solitons is derived by means of a variational approximation, which demonstrates that the inelastic nature of the collision arises from a coupling of the gauge field to velocities of the solitons. In addition, we derive a set of interaction potentials which show that the influence of the gauge field appears as a short-range potential, that can give rise to both attractive and repulsive interactions.
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