The spectral determinant for second order elliptic operators on the real line
Letters in Mathematical Physics(2024)
摘要
We derive an expression for the spectral determinant of a second-order
elliptic differential operator 𝒯 defined on the whole real line, in
terms of the Wronskians of two particular solutions of the equation
𝒯 u=0. Examples of application of the resulting formula include the
explicit calculation of the determinant of harmonic and anharmonic oscillators
with an added bounded potential with compact support.
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