Time-dependent metric for the two-dimensional, non-Hermitian coupled oscillator
2019 ◽
Vol 35
(08)
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pp. 2050041
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Keyword(s):
We provide a time-dependent Dyson map and metric for the two-dimensional harmonic oscillator with a non-Hermitian ixy coupling term. This particular time-independent model exhibits spontaneously broken [Formula: see text]-symmetry and becomes unphysical in the broken regime, with the spectrum becoming partially complex. By introducing an explicit time dependence into the Dyson map, we provide a time-dependent metric that renders the model consistent across the unbroken and broken regimes.
2012 ◽
Vol 45
(46)
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pp. 465301
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1958 ◽
Vol 11
(2)
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pp. 95-103
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Keyword(s):
2012 ◽
Vol 21
(11)
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pp. 1242011
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Keyword(s):
2011 ◽
Vol 52
(10)
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pp. 103509
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2004 ◽
Vol 31
(6)
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pp. 621-632
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Keyword(s):