Universal behavior of diatomic halo states and the mass sensitivity of their properties

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388963%3A_____%2F19%3A00501473" target="_blank" >RIV/61388963:_____/19:00501473 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11320/19:10406023

Výsledek na webu

<a href="https://iopscience.iop.org/article/10.1088/1361-6455/aaf5f9" target="_blank" >https://iopscience.iop.org/article/10.1088/1361-6455/aaf5f9</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1361-6455/aaf5f9" target="_blank" >10.1088/1361-6455/aaf5f9</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Universal behavior of diatomic halo states and the mass sensitivity of their properties

Popis výsledku v původním jazyce

The scattering and spectroscopic properties of molecular halo states can serve as sensitive probes of the constancy of the electron-to-proton mass ratio beta = m(e)/m(p). Since halo states are formed by resonant s-wave interactions, their properties exhibit universal correlations that are fairly independent of the interactions at short distances. For diatomic molecules, these properties depend on a single-parameter only, and so this 'universality' means that all the characteristics of a diatomic halo state can be determined with high precision if only one-parameter is accurately known. Furthermore, this knowledge can be used to establish the respective property mass sensitivities for investigating the stability of beta. Here, we show for the halo states of the helium dimers that the relationship between the probed properties and their mass sensitivity can be derived from numerically exact solutions of suitable radial Schrodinger equations for a set of effective potential energy curves. The resulting relations exhibit a weak dependence on the short-range part of the used potentials and a near-negligible dependence on the 'higher-order' nonadiabatic, relativistic, quantum electrodynamical and residual retardation effects. The presented approach is thus a robust alternative to other literature approaches, particularly in cases where a lack of experimental data prevents an accurate interaction potential from being determined.

Název v anglickém jazyce

Universal behavior of diatomic halo states and the mass sensitivity of their properties

Popis výsledku anglicky

The scattering and spectroscopic properties of molecular halo states can serve as sensitive probes of the constancy of the electron-to-proton mass ratio beta = m(e)/m(p). Since halo states are formed by resonant s-wave interactions, their properties exhibit universal correlations that are fairly independent of the interactions at short distances. For diatomic molecules, these properties depend on a single-parameter only, and so this 'universality' means that all the characteristics of a diatomic halo state can be determined with high precision if only one-parameter is accurately known. Furthermore, this knowledge can be used to establish the respective property mass sensitivities for investigating the stability of beta. Here, we show for the halo states of the helium dimers that the relationship between the probed properties and their mass sensitivity can be derived from numerically exact solutions of suitable radial Schrodinger equations for a set of effective potential energy curves. The resulting relations exhibit a weak dependence on the short-range part of the used potentials and a near-negligible dependence on the 'higher-order' nonadiabatic, relativistic, quantum electrodynamical and residual retardation effects. The presented approach is thus a robust alternative to other literature approaches, particularly in cases where a lack of experimental data prevents an accurate interaction potential from being determined.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Physics B-Atomic Molecular and Optical Physics

ISSN

0953-4075

e-ISSN

—

Svazek periodika

52

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

025102

Kód UT WoS článku

000454240200001

EID výsledku v databázi Scopus

2-s2.0-85059868676