Four-mode squeezed states: two-field quantum systems and the symplectic group $$\mathrm {Sp}(4,{\mat...
Four-mode squeezed states: two-field quantum systems and the symplectic group $$\mathrm {Sp}(4,{\mathbb {R}})$$ Sp ( 4 , R )
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SpringerOpen
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English
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SpringerOpen
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Abstract We construct the four-mode squeezed states and study their physical properties. These states describe two linearly-coupled quantum scalar fields, which makes them physically relevant in various contexts such as cosmology. They are shown to generalise the usual two-mode squeezed states of single-field systems, with additional transfers of q...
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Four-mode squeezed states: two-field quantum systems and the symplectic group $$\mathrm {Sp}(4,{\mathbb {R}})$$ Sp ( 4 , R )
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TN_cdi_doaj_primary_oai_doaj_org_article_8427bc28bc644968a67fa413a76f0884
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https://devfeature-collection.sl.nsw.gov.au/record/TN_cdi_doaj_primary_oai_doaj_org_article_8427bc28bc644968a67fa413a76f0884
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ISSN
1434-6044
E-ISSN
1434-6052
DOI
10.1140/epjc/s10052-021-09922-y
