<?xml version="1.0" encoding="UTF-8"?><?xml-stylesheet type="text/xsl" href="static/style.xsl"?><OAI-PMH xmlns="http://www.openarchives.org/OAI/2.0/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/ http://www.openarchives.org/OAI/2.0/OAI-PMH.xsd"><responseDate>2026-04-28T19:04:39Z</responseDate><request verb="GetRecord" identifier="oai:uvadoc.uva.es:10324/23457" metadataPrefix="mods">https://uvadoc.uva.es/oai/request</request><GetRecord><record><header><identifier>oai:uvadoc.uva.es:10324/23457</identifier><datestamp>2026-03-20T08:24:06Z</datestamp><setSpec>com_10324_22154</setSpec><setSpec>com_10324_954</setSpec><setSpec>com_10324_894</setSpec><setSpec>col_10324_22155</setSpec></header><metadata><mods:mods xmlns:mods="http://www.loc.gov/mods/v3" xmlns:doc="http://www.lyncode.com/xoai" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-1.xsd">
<mods:name>
<mods:namePart>Drigo Filho, Elso</mods:namePart>
</mods:name>
<mods:name>
<mods:namePart>Kuru, Şengül</mods:namePart>
</mods:name>
<mods:name>
<mods:namePart>Negro Vadillo, Francisco Javier</mods:namePart>
</mods:name>
<mods:name>
<mods:namePart>Nieto Calzada, Luis Miguel</mods:namePart>
</mods:name>
<mods:extension>
<mods:dateAvailable encoding="iso8601">2017-06-06T12:33:07Z</mods:dateAvailable>
</mods:extension>
<mods:extension>
<mods:dateAccessioned encoding="iso8601">2017-06-06T12:33:07Z</mods:dateAccessioned>
</mods:extension>
<mods:originInfo>
<mods:dateIssued encoding="iso8601">2017</mods:dateIssued>
</mods:originInfo>
<mods:identifier type="citation">http://dx.doi.org/10.1016/j.aop.2017.05.003</mods:identifier>
<mods:identifier type="citation">Annals of Physics, 2017, vol. 383. p. 101-119</mods:identifier>
<mods:identifier type="issn">0003-4916</mods:identifier>
<mods:identifier type="uri">http://uvadoc.uva.es/handle/10324/23457</mods:identifier>
<mods:abstract>The Fock-Darwin system is analysed from the point of view of its symmetry properties in the&#xd;
quantum and classical frameworks. The quantum Fock-Darwin system is known to have two&#xd;
sets of ladder operators, a fact which guarantees its solvability. We show that for rational&#xd;
values of the quotient of two relevant frequencies, this system is superintegrable, the quantum&#xd;
symmetries being responsible for the degeneracy of the energy levels. These symmetries are&#xd;
of higher order and close a polynomial algebra. In the classical case, the ladder operators are&#xd;
replaced by ladder functions and the symmetries by constants of motion. We also prove that&#xd;
the rational classical system is superintegrable and its trajectories are closed. The constants&#xd;
of motion are also generators of symmetry transformations in the phase space that have been&#xd;
integrated for some special cases. These transformations connect different trajectories with&#xd;
the same energy. The coherent states of the quantum superintegrable system are found and&#xd;
they reproduce the closed trajectories of the classical one.</mods:abstract>
<mods:language>
<mods:languageTerm>eng</mods:languageTerm>
</mods:language>
<mods:accessCondition type="useAndReproduction">info:eu-repo/semantics/openAccess</mods:accessCondition>
<mods:titleInfo>
<mods:title>Superintegrability of the Fock-Darwin system</mods:title>
</mods:titleInfo>
<mods:genre>info:eu-repo/semantics/article</mods:genre>
</mods:mods></metadata></record></GetRecord></OAI-PMH>