Efimov effect in non-integer dimensions induced by an external field
| Autor: | Eduardo Garrido, A. S. Jensen |
|---|---|
| Přispěvatelé: | Ministerio de Ciencia, Innovación y Universidades (España) |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Nuclear Theory
Field (physics) nucl-th FOS: Physical sciences General Physics and Astronomy physics.atm-clus 01 natural sciences 010305 fluids & plasmas Nuclear Theory (nucl-th) Dimension (vector space) Integer quant-ph Ultracold atom Quantum mechanics TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY 0103 physical sciences External field Physics - Atomic and Molecular Clusters 010306 general physics Nuclear theory Scaling Confinement of quantum systems Physics Quantum Physics d-dimensional calculations Efimov effect Quantum Gases (cond-mat.quant-gas) Energy variation Atomic and Molecular Clusters (physics.atm-clus) Quantum Physics (quant-ph) Condensed Matter - Quantum Gases cond-mat.quant-gas |
| Zdroj: | Garrido, E & Jensen, A S 2021, ' Efimov effect in non-integer dimensions induced by an external field ', Physics Letters A, vol. 385, 126982 . https://doi.org/10.1016/j.physleta.2020.126982 Digital.CSIC: Repositorio Institucional del CSIC Consejo Superior de Investigaciones Científicas (CSIC) Digital.CSIC. Repositorio Institucional del CSIC instname |
| DOI: | 10.1016/j.physleta.2020.126982 |
| Popis: | 6 pags., 5 figs., 1 tab. The Efimov effect can be induced by means of an external deformed one-body field that effectively reduces the allowed spatial dimensions to less than three. To understand this new mechanism, conceptually and practically, we employ a formulation using non-integer dimension, which is equivalent to the strength of an external oscillator field. The effect most clearly appears when the crucial two-body systems are unbound in three, but bound in two, dimensions. We discuss energy variation, conditions for occurrence, and number of Efimov states, as functions of the dimension. We use practical examples from cold atom physics of 133Cs-133Cs-133Cs, 87Rb-87Rb-87Rb, 133Cs-133Cs-6Li, and 87Rb-87Rb-39K. Laboratory tests of the effect can be performed with two independent parameters, i.e. the external one-body field and the Feshbach two-body tuning. The scaling and (dis)appearance of these Efimov states occur precisely as already found in three dimensions. This work has been partially supported by the Spanish Ministry of Science, Innovation and University MCIU/AEI/FEDER,UE (Spain) under Contract No. PGC2018-093636-B-I00 |
| Databáze: | OpenAIRE |
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